CN108918346B

CN108918346B - Fluidity tester

Info

Publication number: CN108918346B
Application number: CN201810800373.5A
Authority: CN
Inventors: 许如源; 毛荣良; 陶鹃
Original assignee: Suzhou Xingbang Chemical Building Materials Co ltd
Current assignee: Suzhou Xingbang Chemical Building Materials Co ltd
Priority date: 2018-07-20
Filing date: 2018-07-20
Publication date: 2020-12-04
Anticipated expiration: 2038-07-20
Also published as: CN108918346A

Abstract

The invention discloses a fluidity tester, which comprises a frame body (200), a timer (10), a processing module (300), a funnel (1) and a starting device (50), wherein the processing module (300) is electrically connected with the starting device (50) and the timer (10), the starting device (50) can open and seal the funnel (1), the fluidity tester also comprises a metering device (100) connected with the frame body (200), the metering device (100) is electrically connected with the processing module (300), the metering device (100) can record the initial value of the weight or the position of the empty funnel (1), and when the metering device (100) senses that the weight or the position of the funnel (1) returns to the initial value, the metering device controls the timer (10) to stop counting through the processing module (300). The fluidity tester can automatically control the timer to stop counting when the slurry flows, and is more convenient and high in accuracy.

Description

Fluidity tester

Technical Field

The invention relates to fluidity testing, in particular to a fluidity tester.

Background

The fluidity is a measure representing the fluidity of cement mortar, and the fluidity of the grouting agent and the grouting material is measured and tested according to the following steps: JTG/T F50-2011 technical Specification for highway bridge and culvert construction), standard TB/T3192-2008 technical Specification for pipeline grouting of post-tensioned prestressed concrete beams for railways, and SZ-G-B04-2007 technical Specification for grouting and reinforcing geopolymer of highway subgrade and base course. According to the above standards, the existing fluidity tester is generally implemented by using a funnel, and during the measurement, the funnel is firstly adjusted to be horizontal, a bottom opening is sealed, and the uniformly stirred slurry is uniformly poured into the funnel until the surface touches the lower end of a point gauge. And opening the bottom opening to enable the slurry to freely flow out, and recording the total outflow time(s) of the slurry to obtain the fluidity of the grouting material.

The existing funnel is used for detecting the fluidity, the test can be generally carried out by 2-3 people, 1 person stably holds the funnel, the other person blocks or opens a bottom opening at the lower end of the funnel by hands, and the third person adds slurry to the funnel and calculates the fluidity through the timing test of a stopwatch. In the timing process of the existing fluidity detector, 1 person blocks a bottom port at the lower end of a funnel by hands, and the person releases the hands and simultaneously indicates another person to perform timing, so that timing errors may exist, and the accuracy of the test is influenced; and the slurry can pollute the palm of a tester and waste manpower.

In order to solve the problems, the chinese patent CN201520007890.9 discloses a fluidity detector, which is provided with a linked timer, wherein a valve is additionally arranged at the bottom of a funnel, the linked timer counts when the valve is opened, and the time for the whole propeller to completely flow is recorded, so that one person can complete the whole testing process. It has the following drawbacks: 1. the method needs to manually judge whether the slurry in the funnel completely flows, a timer value is recorded when the slurry completely flows, and the judgment standards of the manual operation on the completion of the slurry are different, so that the error is larger; 2. the funnel opening is plugged by the valve, slurry easily blocks the valve, the normal operation of the valve is affected, and the slurry is easily adhered to the valve after being used for many times, so that the opening of the funnel is relatively reduced, and the detection of the flowability is affected.

Disclosure of Invention

The invention aims to overcome the defects in the prior art and provide a fluidity tester which can automatically judge whether the slurry is completely flowed or not and stop counting when the slurry is completely flowed, so that the precision and the automation degree are improved.

In order to achieve the purpose, the invention adopts the following technical scheme: the utility model provides a fluidity tester, its includes support body, time-recorder, processing module, funnel and starting drive, processing module with starting drive with the time-recorder electricity is connected, starting drive can open and seal the funnel its characterized in that: the fluidity tester also comprises a metering device connected with the frame body, the metering device is electrically connected with the processing module, the metering device can record the initial value of the weight or the position of the empty funnel, and when the metering device senses that the weight or the position of the funnel returns to the initial value, the metering device controls the timer to stop counting through the processing module.

In addition, the invention also provides the following auxiliary technical scheme:

the metering device comprises a plurality of pressure sensors connected with the frame body, and the plurality of pressure sensors support the frame body.

Metering device including all set up in many supporting spring and position sensor on the support body, supporting spring supports the funnel, position sensor detects the high position of funnel.

The metering device further comprises a plurality of guide posts arranged on the frame body, the funnel is provided with a lug sleeved on the guide posts, and the supporting spring is sleeved on the guide posts and supports the lug.

The position sensor is a travel switch.

The starting device comprises a sealing plate and a fixing assembly, the sealing plate is rotatably connected with the frame body, the fixing assembly is connected with the frame body, and the fixing assembly can fix the position of the sealing plate.

The fixing assembly comprises a starting piece, a connector and a first spring, the starting piece is movably connected with the frame body and is provided with a plugging portion, the plugging portion is provided with a socket matched with the connector, and the first spring is connected between the sealing plate and the connector and can push the connector into the socket.

The starting piece further comprises a shaft portion movably connected with the frame body, a fixing portion connected with the shaft portion and a second spring sleeved on the shaft portion, wherein the second spring is arranged between the frame body and the inserting portion and pushes the plug connector to the sealing plate.

The starting device also comprises an air cylinder connected to the frame body and a connecting sleeve connected with the air cylinder and the starting piece.

The connector is provided with a tapered surface which can be in contact with the insertion part in the rotation process of the sealing plate.

Compared with the prior art, the invention has the advantages that: 1. the fluidity tester automatically times when the test is started and stops timing after the slurry is completely flowed, has high automation degree, does not need to manually control the start and stop of a timer, and improves the convenience and the accuracy of the test result;

2. the sealing plate of the fluidity tester is very convenient to open and seal the funnel, and is sealed by matching rubber, so that the fluidity tester has strong sealing property;

3. the fluidity tester of the invention does not need a valve, is not easy to block and is convenient to clean.

Drawings

FIG. 1 is a schematic view of the structure of the fluidity tester of the present invention.

Fig. 2 is a schematic structural view of the starting apparatus of the present invention.

Fig. 3 is an enlarged view of a portion I in fig. 2.

FIG. 4 is a schematic view of the fluidity tester of the present invention after the sealing plate is opened.

Fig. 5 is a schematic view of another construction of the starting apparatus of the present invention.

FIG. 6 is a schematic view showing the positions of the tapered surface and the insertion part when the sealing plate of the present invention is rotated.

Figure 7 is a schematic view of another configuration of the metering device of the present invention.

Detailed Description

The present invention will be described in further non-limiting detail with reference to the following preferred embodiments and accompanying drawings.

As shown in fig. 1, the fluidity tester according to a preferred embodiment of the present invention includes a frame 200, a funnel 1, a timer 10, a starting device 50, a metering device 100, and a processing module 300.

The rack body 200 is used for fixing the whole set of tester, can be a whole or formed by connecting a plurality of parts, preferably adopts an iron bracket, and is convenient to weld and install.

The processing module 300 is electrically connected to the timer 10 and the sensors used in the tester, and is used for analyzing and processing signals and sending action instructions, and may be a computer, a single chip, an industrial personal computer, or the like.

The timer 10 is used for timing, and is controlled by the processing module 300 to start or stop timing, and is preferably provided with a panel for displaying time, so that the time display can be visually seen.

The funnel 1 is used for holding the slurry, the lower end of the funnel is provided with an opening part 2 for the slurry to flow through, the upper end of the funnel is connected with a measuring gauge 4 through a support 3, and the lower end of the measuring gauge 4 extends into the funnel 1 and is used for indicating the position of the slurry to be poured. The height of the gauge 4 on the support 3 is adjustable, for example, through threaded connection, in this embodiment, a nut 5 is screwed on the gauge 4, the gauge 4 is inserted on the support 3, and the relative position of the gauge 4 and the support 3 can be adjusted by adjusting the position of the nut 5 on the gauge 4.

As shown in fig. 2 to 3, the actuating means 50 for closing or opening the opening portion 2 of the funnel 1 includes a sealing plate 52 and a fixing member 53. The sealing plate 52 is rotatably connected to the frame body 200, in this embodiment, a fixing shaft 201 is disposed on the frame body 200, and a hole 54 engaged with the fixing shaft 201 is formed at an upper position of one end of the sealing plate 52, so that the sealing plate 52 can rotate around the fixing shaft 201. It is easily conceived that substantially the same technical effects can be achieved by providing the fixing shaft 201 on the sealing plate 52 and the hole 54 on the frame body 200. In addition, a bearing may be provided between the fixed shaft 201 and the hole 54, and a weight 68 may be provided below the sealing plate 52 to increase the smoothness of the rotation.

The fixing assembly 53 includes an actuating member 55, a socket connector 56 and a first spring 71. In one embodiment, the holder body 200 is provided with a fixing block 70, and the actuating member 55 is provided with a shaft portion 57 inserted into the fixing block 70, and a fixing portion 58 and an insertion portion 59 respectively provided at both ends of the shaft portion 57. The fixing portion 58 and the shaft portion 57 are detachably connected, such as screwed; a second spring 61 is sleeved on the shaft part 57, one end of the second spring 61 is abutted against the fixed block 70, the other end is abutted against the insertion part 59, and the second spring exerts force in the direction of abutting the insertion part 59 against the connector 56; the side of the plug-in part 59 is provided with a jack 60 which is matched with the connector 56. The side surface of the sealing plate 52 is provided with a guide hole 62 matched with the connector 56, the first spring 71 is connected between the bottom wall 63 of the guide hole 62 and the connector 56 and pushes the connector 56 to the direction of the patch hole 60, so that the connector 56 can extend into the patch hole 60 when the sealing plate 52 is horizontal, the sealing plate 52 is fixed, and at the moment, the upper surface of the sealing plate 52 is contacted with the opening 2, and the opening 2 is sealed; as shown in fig. 4, when a person pulls the actuating member 55, the connector 56 will be separated from the insertion hole 60, and the sealing plate 52 will rotate around the fixing shaft 201 (refer to the arrow in fig. 4) by gravity, thereby releasing the sealing of the opening portion 2. The fixing assembly 53 further includes a sensor 65, the sensor 65 is connected to the processing module 300, the sensor 65 is used for detecting the open state of the sealing plate 52, and may be a position sensor, a travel switch, a photoelectric switch, and the like, in this embodiment, a travel switch is adopted and is disposed on the rack body 200, after the fixing portion 58 is pulled so that the tab 72 disposed on the shaft portion 57 contacts the travel switch, the connector 56 is disengaged from the socket 60, the sealing plate 52 is opened, at this time, the travel switch sends a signal to the processing module 300, and the processing module 300 drives the timer 10 to start timing. In another embodiment, as shown in fig. 5, the fixing assembly 52 is simply modified from the previous embodiment by adding a cylinder 64 instead of the fixing block 70 and the second spring 61, the cylinder 64 is mounted on the frame 200, the piston shaft thereof is directly connected with the shaft part 57 through a connecting sleeve 73, and the actuating member 55 is driven to move by the cylinder 64, so that the manual operation is not needed, and the degree of automation is higher. In this embodiment, the sensor 65 is a magnetic sensor (usually a hall element) disposed on the surface of the cylinder 64 for sensing the position of the magnetic ring of the piston, and when the cylinder 64 changes from the extended state to the retracted state, the magnetic sensor senses the position of the magnetic ring and sends a signal to the processing module 300, and the processing module 300 drives the timer 10 to time. The manner of controlling the cylinder 64 to extend and retract is many in the prior art, such as by operating a solenoid valve, or by the processing module 300, and will not be described in detail herein.

As shown in fig. 6, the tapered surface 66 is provided on the connector 56, and the tapered surface 66 is advantageous in that when the connector 56 needs to be inserted into the jack 60, the sealing plate 52 is rotated toward the opening 2 (in the direction of the arrow in the figure) only when the plug portion 69 is in the extended state, and the tapered surface 66 is pressed against the plug portion 69 and is retracted into the guide hole 62 until the connector 56 can be inserted into the jack 60.

In order to improve the sealing performance, an annular rubber pad 6 is arranged at the opening part 2, the rubber pad 6 can be adhered or connected with the opening part through a flange, and the inner diameter of the rubber pad is consistent with that of the opening part 2; a circular rubber plate 67 is provided on the sealing plate 52 for sealing the rubber pad 6, so that when the sealing plate 52 is horizontal, a certain pressure exists between the rubber plate 67 and the rubber pad 6 to deform, thereby enhancing the sealing effect.

The metering device 100 is adapted to send a signal to the process module 300 when the slurry in the hopper 1 flows light, so that the process module 300 drives the timer 10 to stop counting.

In one embodiment, referring to fig. 1, the metering module 100 includes a plurality of pressure sensors 101 fixed on a frame 200, the plurality of pressure sensors 101 support the funnel 1, and for the convenience of supporting, a protrusion 7 is provided at the side of the funnel 1, the protrusion 7 is provided on the pressure sensor 101, and the pressure sensor 101 is electrically connected with the processing module. When the automatic timing device is used, the empty funnel 1 is placed on the pressure sensor 101, the processing module records the current value, the sealing plate 52 is rotated to the position where the opening part 2 is sealed, slurry can be filled, the sealing plate 52 can be opened after a proper amount of slurry is filled, the slurry flows out, the timer 10 is triggered to start timing, and when the slurry flows out, the value sensed by the pressure sensor 101 is consistent with the recorded value (a certain error range can be set due to the fact that the possibility of complete consistency is low), the processing module 300 drives the timer 10 to stop timing.

In another embodiment, referring to fig. 7, the metering module 100 includes a plurality of guide posts 102 disposed on the frame 200, a support spring 103 sleeved on each guide post 102, and a position sensor 104, wherein the number of the guide posts 102 may be multiple, preferably four, and the guide posts are uniformly arranged around the funnel 1. The loophole 1 is provided with a lug 8 sleeved on the guide post 102, and the funnel 1 can move up and down along the guide post 102. The supporting spring 103, which is sleeved on the guiding column 102, is pressed against the convex block 8, which supports the funnel 1. The position sensor 104 is fixed on the frame 200, and may be a photoelectric switch or a travel switch, etc., in this embodiment, the travel switch is adopted, and the funnel 1 is provided with a shifting piece 9 for shifting the travel switch. During the use, first place empty funnel 1 on guide post 102, can arrange travel switch at plectrum 9 relevant position this moment (note the initial position when funnel 1 does not adorn the thick liquids promptly), rotate closing plate 52 to the position of sealing opening 2, can adorn the thick liquids additional, because the supporting role of closing plate 52, funnel 1 can not take place too big displacement downwards this moment, can open closing plate 52 after the suitable amount of thick liquids of packing into, make the thick liquids flow out and trigger timer 10 and begin the automatic timing, thereby funnel 1 lower part loses the support of closing plate 52 and compresses supporting spring 103, thereby funnel 1 will descend promptly, and can flow out along with the thick liquids, weight alleviates and slowly rises, funnel 1 rises to initial position after the streamer, plectrum 9 stirs travel switch, travel switch sends the signal to processing module 300, make timer 10 stop timing.

When the fluidity tester is used, firstly, the funnel 1 is installed on the metering device 100, and then the sealing plate 52 of the starting device 50 is sealed at the lower part of the funnel 1; then adjusting the gauge 4 to a proper position, and uniformly pouring the slurry until the upper surface of the slurry is contacted with the lower part of the gauge 4; then, the sealing plate of the starting device 50 is opened, and at this time, the processing module 300 controls the timer 10 to start timing; after the metering device 100 senses that the slurry has flowed out, the processing module 300 controls the timer 10 to stop timing. The operator can calculate the slurry fluidity from the time displayed by the timer 10.

The invention at least comprises the following advantages:

1. the fluidity tester automatically times when the test is started and stops timing after the slurry is completely flowed, has high automation degree, does not need to manually control the start and stop of a timer, and improves the convenience and the accuracy of the test result;

3. the fluidity tester of the invention does not need a valve, is not easy to block, uses a plate-shaped sealing plate and is convenient to clean.

It should be noted that the above-mentioned preferred embodiments are merely illustrative of the technical concepts and features of the present invention, and are intended to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.

Claims

1. A fluidity tester, which comprises a frame body (200), a timer (10), a processing module (300), a funnel (1) and a starting device (50), wherein the processing module (300) is electrically connected with the starting device (50) and the timer (10), the starting device (50) can open and seal the funnel (1), and is characterized in that: the fluidity tester also comprises a metering device (100) connected with the frame body (200), the metering device (100) is electrically connected with the processing module (300), the metering device (100) can record the initial value of the weight or the position of an empty funnel (1), and when the metering device (100) senses that the weight or the position of the funnel (1) returns to the initial value, the metering device controls the timer (10) to stop counting through the processing module (300);

the starting device (50) comprises a sealing plate (52) and a fixing assembly (53), the sealing plate (52) is rotatably connected with the frame body (200), the fixing assembly (53) is connected with the frame body (200), and the fixing assembly (53) can fix the position of the sealing plate (52);

the fixing assembly (53) comprises a starting piece (55), a connector (56) and a first spring (71), the starting piece (55) is movably connected with the frame body (200) and is provided with a plugging portion (59), the plugging portion (59) is provided with a plug jack (60) matched with the connector (56), and the first spring (71) is connected between the sealing plate (52) and the connector (56) and can push the connector (56) into the plug jack (60).

2. The fluidity tester of claim 1, wherein: the metering device (100) comprises a plurality of pressure sensors (101) connected to the frame (200), the plurality of pressure sensors (101) supporting the frame (200).

3. The fluidity tester of claim 1, wherein: metering device (100) including all set up in many supporting spring (103) and position sensor (104) on support body (200), supporting spring (103) support funnel (1), position sensor (104) detect the high position of funnel (1).

4. The fluidity tester of claim 3, wherein: the metering device (100) further comprises a plurality of guide columns (102) arranged on the frame body (200), the funnel (1) is provided with a lug (8) sleeved on the guide columns (102), and the support spring (103) is sleeved on the guide columns (102) and supports the lug (8).

5. The fluidity tester of claim 3, wherein: the position sensor (104) is a travel switch.

6. The fluidity tester of claim 1, wherein: the starting piece (55) further comprises a shaft part (57) movably connected with the frame body (200), a fixing part (58) connected with the shaft part (57) and a second spring (61) sleeved on the shaft part (57), wherein the second spring (61) is arranged between the frame body (200) and the inserting part (59) and pushes the inserting piece (59) to the sealing plate (52).

7. The fluidity tester of claim 1, wherein: the starting device (50) further comprises an air cylinder (64) connected to the frame body (200) and a connecting sleeve (73) connecting the air cylinder (64) and the starting piece (55).

8. The fluidity tester of claim 1, wherein: the connector (56) is provided with a tapered surface (66) that can contact the plug portion (59) during rotation of the seal plate (52).