CN218956589U - Auxiliary feeding tool and test device for concrete pressure bleeding rate test - Google Patents

Abstract

The utility model discloses an auxiliary feeding tool and a test device for a concrete pressure bleeding rate test, wherein the auxiliary feeding tool comprises a first cylinder, and one end of the first cylinder is larger than the other end of the first cylinder in diameter; the second cylinder is fixedly connected to one end of the first cylinder, which is smaller in diameter; the first cylinder body is communicated with the second cylinder body; a first identification line is arranged in the first cylinder, and the volume of the first identification line away from one end of the second cylinder, which is far away from the first cylinder, is equal to half of the feeding volume of a single test; the switch valve is arranged at one end of the second cylinder body far away from the first cylinder body; the switch valve has two working states, and in the first working state, the switch valve is closed; in the second working state, the switch valve is opened. The utility model can facilitate feeding and ensure test precision.

Description

Auxiliary feeding tool and test device for concrete pressure bleeding rate test

Technical Field

The utility model relates to the technical field of concrete detection, in particular to an auxiliary feeding tool and a test device for concrete pressure bleeding rate test.

Background

With the increasing demand for mass concrete and high-rise building concrete, the application of pumping concrete is becoming more and more widespread. The test of the pressure bleeding rate is particularly important for the performance requirement of the special concrete.

In the test, a measuring cylinder needs to be arranged at the bottom, and the measuring range of the measuring cylinder used by the GB/T50080-2016 standard is 200mL. Therefore, in practical application, the height of the upper end of the cylinder body is usually about 1 meter. In the test, the samples are usually mixed on the ground, and the samples are inconvenient to feed when being contained.

In the prior art, the bracket with the bottom and the cylinder body are made into a split type, and the cylinder body can be placed on the ground first and then is provided with a sample loading port. This, while capable of somewhat facilitating handling, still presents a number of problems. If the standard requires two feeding, that is, the optimal feeding mode is that the two feeding amounts are equal, the feeding amount is not easy to control, and if the concrete is easy to drop on the edge of the cylinder body after being mixed in the feeding process, the sealing of the cylinder body and the upper end cover is affected. Both problems can make the operation inconvenient and affect the test accuracy.

In summary, how to ensure the test accuracy and make the use and operation more convenient is one of the important problems to be solved in the art.

Disclosure of Invention

The utility model aims to provide an auxiliary feeding tool and a test device for concrete pressure bleeding rate tests, so as to solve the defects in the prior art, and the auxiliary feeding tool can facilitate feeding and can ensure test precision.

The utility model provides an auxiliary feeding tool for concrete pressure bleeding rate test, which comprises,

the diameter of one end of the first cylinder is larger than that of the other end of the first cylinder;

the second cylinder is fixedly connected to one end of the first cylinder, which is smaller in diameter; the first cylinder body is communicated with the second cylinder body; a first identification line is arranged in the first cylinder, and the volume of the first identification line away from one end of the second cylinder, which is far away from the first cylinder, is equal to half of the feeding volume of a single test;

the switch valve is arranged at one end of the second cylinder body far away from the first cylinder body; the switch valve has two working states, and in the first working state, the switch valve is closed; in the second working state, the switch valve is opened.

The auxiliary feeding tool for the concrete pressure bleeding rate test is characterized in that optionally, a second identification line is arranged in the first cylinder, and the periphery of the first cylinder corresponding to the second identification line is equal to the inner diameter of the cylinder for test; and the distance between the second identification line and the on-off valve is between 28 and 32 millimeters.

The auxiliary feeding tool for the concrete pressure bleeding rate test comprises a fixed plate and a movable plate, wherein the fixed plate is arranged on the upper side of the concrete pressure bleeding rate test body;

the fixed plate is fixedly arranged on the second cylinder body, and a first through hole is formed in the fixed plate;

the movable plate and the fixed plate are arranged in a sliding way;

when the switch valve is in a first working state, the movable plate seals the first through hole;

when the switch valve is in the second working state, the movable plate is dislocated with the first through hole.

The auxiliary feeding tool for the concrete pressure bleeding rate test is characterized in that the fixed plate is optionally provided with a fixed shaft, the movable plate is rotatably connected with the fixed shaft, and one side of the movable plate is abutted against the fixed plate;

the movable plate is provided with a second through hole;

when the switch valve is in a first working state, the first through hole is blocked by the movable plate, and the second through hole is blocked by the fixed plate;

when the switch valve is in the second working state, the first through hole and the second through hole are overlapped.

The auxiliary feeding tool for the concrete pressure bleeding rate test is characterized in that, optionally, one end of the second cylinder far away from the first cylinder is provided with an inwards bent flange; an annular groove is formed between the flange and the fixed plate; the movable plate is arranged in the annular groove.

The auxiliary feeding tool for the concrete pressure bleeding rate test is described above, wherein, optionally, the first through hole and the second through hole are fan-shaped holes.

The auxiliary feeding tool for the concrete pressure bleeding rate test is characterized in that a third through hole is formed in the second cylinder body;

the third through hole is communicated with the annular groove;

the movable plate is provided with a first handle in a radial direction, and the first handle passes through the third through hole.

The auxiliary feeding tool for concrete pressure bleeding rate test as described above, wherein optionally, the fixed shaft is positioned at one side of the fixed plate close to the first cylinder;

one side of the movable plate, which is far away from the fixed plate, is provided with a fixed rod, and one end of the fixed rod, which is far away from the movable plate, is provided with a second handle.

The concrete pressure bleeding rate test auxiliary feeding tool as described above, wherein optionally, the length of the fixing rod is greater than the sum of the length of the first cylinder and the length of the second cylinder.

The utility model also provides a concrete pressure bleeding rate test device, which comprises a bracket, a bottom plate, a sealing ring, a mesh screen, a cylinder body, a top cover, a nut, a barostat and a gas tank; wherein the auxiliary feeding tool comprises any one of the above materials;

the support comprises a circular base and a plurality of at least three support rods which are distributed circumferentially along the central line of the base;

the bottom plate is fixedly connected with the supporting rod and is positioned above the base; a water outlet is arranged on the bottom plate;

the mesh screen is placed on the bottom plate, the cylinder body is used for being placed on the mesh screen, and the sealing ring is arranged between the bottom plate and the cylinder body;

the auxiliary feeding tool is used for feeding materials twice from the upper end of the cylinder body;

the top cover is provided with mounting holes, and the plurality of support rods respectively penetrate through the corresponding mounting holes; the nuts are respectively in threaded connection with the supporting rods so as to compress the top cover, so that two ends of the cylinder body are respectively sealed with the bottom plate and the top cover;

the top cover is provided with an air inlet hole used for being connected with the barostat, and the barostat is communicated with the air tank.

Compared with the prior art, the auxiliary feeding tool is arranged, feeding can be facilitated, and because one end of the first cylinder body is larger than the other end of the first cylinder body, the auxiliary feeding tool is placed on the cylinder body, and the second cylinder body is located in the upper end of the cylinder body. During feeding, the larger end of the first cylinder body is larger than the outer diameter of the cylinder body, so that concrete can be prevented from dripping to the upper end of the cylinder body during feeding, and the upper end of the cylinder body and the top cover can be sealed.

Through setting up first sign line in first barrel, because the volume that first sign line marked is half with single experimental material loading volume, when the material loading in-process at every turn when using, hold the sample in the supplementary material loading instrument, make the concrete sample after the mix reach the position of first sign line. Thus, the two-time feeding is convenient, and the equal amount of the samples fed for the two times is ensured.

According to the utility model, the switch valve is arranged at one end of the second cylinder body far away from the first cylinder body, so that the sample can be filled into the auxiliary feeding tool in a state that the switch valve is closed, and the sample reaches the first identification line, thereby facilitating quantitative feeding.

Drawings

Fig. 1 is a perspective view of an auxiliary feeding tool according to embodiment 1;

FIG. 2 is a perspective view of the auxiliary feeding tool of FIG. 1 from another perspective;

fig. 3 is a schematic structural diagram of a first cylinder and a second cylinder according to embodiment 1;

FIG. 4 is a perspective view of the first barrel and the second barrel of FIG. 3 from another perspective;

fig. 5 is a front view of fig. 3;

FIG. 6 is a cross-sectional view taken along line A-A of FIG. 5;

fig. 7 is a perspective view of the movable plate proposed in embodiment 1;

fig. 8 is a perspective view of the auxiliary feeding tool according to embodiment 2;

FIG. 9 is a schematic structural view of the first cylinder and the second cylinder;

fig. 10 is a perspective view of fig. 9 at another view angle;

fig. 11 is a perspective view of the movable plate proposed in embodiment 2;

FIG. 12 is a perspective view of the concrete pressure bleeding rate test apparatus proposed in example 3 at the time of loading;

FIG. 13 is a perspective view of a concrete pressure bleeding rate test apparatus;

FIG. 14 is a cross-sectional view of a concrete pressure bleeding rate test apparatus.

Reference numerals illustrate:

1-a first cylinder, 2-a second cylinder, 3-a switching valve, 4-a bracket, 5-a bottom plate, 6-a sealing ring, 7-a mesh screen, 8-a cylinder, 9-a top cover and 10-a nut;

11-a first identification line, 12-a second identification line, 13-a third handle;

21-flanging, 22-annular grooves and 23-third through holes;

31-fixed plate, 32-movable plate;

311-a fixed shaft, 312-a first through hole;

321-second through holes, 322-first handles, 323-fixing rods, 324-second handles;

41-a base and 42-a supporting rod.

Detailed Description

The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

Aiming at the problems in the background art, the main reasons that the operation is inconvenient and the precision is inconvenient to ensure in the pressure bleeding rate test process are as follows: firstly, the opening of the cylinder body is smaller, and after the cylinder body is placed on the bottom plate, the height of the opening at the upper end of the cylinder body is about 1 meter, so that the filling is inconvenient when filling samples; secondly, when filling the sample, the concrete is easy to drop to the upper port of the cylinder body, and the problem of sealing the upper port of the cylinder body is easy to occur; thirdly, when the test is divided into two times of filling the sample, it is difficult to quantify the twice-filled sample; fourth, in order to ensure the precision of the test, after two times of filling samples before a single test, the distance between the sample and the port on the cylinder body is required to be 28 to 32 cm, and the filling process is not easy to ensure.

Example 1

Referring to fig. 1 to 7, the embodiment provides an auxiliary feeding tool for concrete pressure bleeding rate test, which comprises a first cylinder 1, a second cylinder 2 and a switch valve 3. In specific implementation, the first cylinder 1 is arranged to be in a flaring structure, the second cylinder 2 is arranged to be in a straight cylinder structure, and the switch valve 3 is used for plugging or opening the bottom of the second cylinder 2.

Referring to fig. 1 to 6, one end of the first cylinder 1 has a larger diameter than the other end. In a specific implementation, the first cylinder 1 may be preferably configured as a conical cylinder with two open ends. Of course, the conical shape is not limited to this embodiment, and for example, the first cylinder 1 may have a flaring structure with a quadrangular cross section.

The second cylinder 2 is fixedly connected to one end of the first cylinder 1 with a smaller diameter; the first cylinder 1 is communicated with the second cylinder 2; specifically, the center line of the second cylinder 2 is on the same line as the center line of the first cylinder 1. Preferably, the first cylinder 1 and the second cylinder 2 are in sealing connection, that is, one end of the first cylinder 1 and the second cylinder 2 are in sealing connection in a circumferential direction, and in a specific implementation, the first cylinder 1 and the second cylinder 2 are preferably integrally formed.

More specifically, a first identification line 11 is arranged in the first cylinder 1, and the volume of the first identification line 11 away from one end of the second cylinder 2, which is far away from the first cylinder 1, is equal to half of the feeding volume of a single test. In specific implementation, the test requires that the loading amount required by each test is fixed, and the test requires that the loading is performed in two times. The first identification line 11 is used for identifying the volume of each feeding and is convenient to operate.

More specifically, the on-off valve 3 is provided at an end of the second cylinder 2 remote from the first cylinder 1; the switch valve 3 has two working states, and in the first working state, the switch valve 3 is closed; in the second operating state, the switching valve 3 is opened. The purpose of the on-off valve 3 is to form the auxiliary loading tool as a container in the first operating state, in order to facilitate the holding of the sample to be loaded. So as to determine the volume of the sample in the auxiliary feeding tool in cooperation with the first identification line 11, thereby facilitating the determination of the single feeding amount. When the upper layer of the sample reaches the first identification line 11, the on-off valve 3 is opened until the sample is completely introduced into the cylinder.

When the concrete feeding device is specifically used, the auxiliary feeding tool is firstly placed on the ground, the switch valve 3 is kept in the first working state, and then the mixed concrete sample is poured into the auxiliary feeding tool until reaching the first identification line 11. Then, an auxiliary feeding tool is placed at the upper end of the cylinder 8 of the assembled bleeding rate testing device, the second cylinder 2 is positioned in the cylinder 8, and the switch valve 3 is opened. After one-time feeding is completed, the auxiliary feeding tool is taken down, and a rod piece is used for tamping the sample in the cylinder body for a plurality of times; then placing the auxiliary feeding tool on the ground, keeping the switch valve 3 in the first working state, and pouring the mixed concrete sample into the auxiliary feeding tool until reaching the first identification line 11. And then placing an auxiliary feeding tool at the upper end of the cylinder body 8 of the assembled bleeding rate test device, enabling the second cylinder body 2 to be positioned in the cylinder body 8, and opening the switch valve 3 until feeding is completed.

Of course, in specific use, the auxiliary feeding tool may be placed at the upper end of the cylinder 8 of the assembled bleeding rate testing device, the on-off valve 3 is kept in the first working state, and then the sample is loaded into the auxiliary feeding tool and reaches the first identification line 11. Then the switch valve 3 is switched to the second working state until the sample is fully filled in the cylinder. Taking down the auxiliary feeding tool, tamping the sample in the cylinder body for a plurality of times by using the rod piece, placing the auxiliary feeding tool at the upper end of the cylinder body 8 of the assembled bleeding rate testing device again, keeping the switch valve 3 in a first working state, and loading the sample in the auxiliary feeding tool until the sample reaches the first identification line 11. Then the switch valve 3 is switched to the second working state until the sample is fully filled in the cylinder.

Through above-mentioned structure and arbitrary material loading method of above-mentioned, all can be convenient for guarantee the precision of single material loading volume, simultaneously, can prevent the material loading in-process, concrete drip to cylinder body up end department, avoid the not tight problem of sealing that causes from this, be favorable to improving experimental precision.

In practice, in order to ensure the test accuracy, the distance between the upper surface of the filled sample and the upper end surface of the upper cylinder is usually required to be between 28 and 32 mm during the test. In order to maintain the size during feeding, the embodiment is further improved by specifically arranging a second identification line 12 in the first cylinder 1, wherein the outer periphery of the first cylinder 1 corresponding to the second identification line 12 is equal to the inner diameter of the cylinder 8 for testing; and the distance between the second identification line 12 and the on-off valve 3 is between 28 and 32 mm. Thus, after the loading is completed, the height of the second identification line 12 and the upper port of the cylinder body are located at the same position. At this time, the bottom of the second cylinder 2 corresponds to the target height of the concrete, so that the distance between the concrete in the cylinder and the second identification line 12 can be conveniently observed, and the feeding amount can be favorably ensured to meet the test requirement.

In particular, the on-off valve 3 is further designed in the present embodiment in consideration of the characteristics of the concrete after mixing, so that the on-off valve 3 is opened or closed, and in particular, the on-off valve 3 includes a fixed plate 31 and a movable plate 32. The fixed plate 31 is used for supporting the device, and the movable plate 32 is used for matching with the fixed plate 31 to form the switch valve 3 so as to realize the switching of the switch valve 3 between a first working state and a second working state.

Specifically, the fixing plate 31 is fixedly mounted on the second cylinder 2, and a first through hole 312 is provided on the fixing plate 31. The movable plate 32 and the fixed plate 31 are arranged in a sliding way; specifically, the movable plate 32 and the fixed plate 31 may be in contact with each other, and may slide in a linear direction or rotate relative to each other.

More specifically, when the on-off valve 3 is in the first operating state, the movable plate 32 blocks the first through hole 312; at this time, a container with a sealed bottom is formed between the first cylinder 1 and the second cylinder 2, and concrete does not flow out from the inside of the on-off valve 3.

When the on-off valve 3 is in the second working state, the movable plate 32 is dislocated from the first through hole 312. The fact that the movable plate 32 is displaced from the first through hole 312 means that the movable plate 32 cannot block the first through hole 312. At this time, the on-off valve 3 is opened, and concrete can flow out from the inside of the on-off valve 3.

Further, in order to realize the above-mentioned functions of the movable plate 32, the present embodiment further provides the fixed plate 31 and the movable plate 32, specifically, the fixed plate 31 is provided with a fixed shaft 311, the movable plate 32 is rotationally connected with the fixed shaft 311, and one side of the movable plate 32 abuts against the fixed plate 31. The movable plate 32 is provided with a second through hole 321. When the switch valve 3 is in the first working state, the first through hole 312 is blocked by the movable plate 32, and the second through hole 321 is blocked by the fixed plate 31; when the on-off valve 3 is in the second working state, the first through hole 312 overlaps with the second through hole 321. In practice, the first through hole 312 and the second through hole 321 should overlap to enable the switching valve 3 to be in the second working state, and be capable of being plugged at the same time to enable the switching valve 3 to be in the first working state.

Referring to fig. 6, in the embodiment, the switching of the on-off valve 3 between the first operating state and the second operating state is not suitable for being realized by means of the linear sliding movable plate 32, which is limited to the radial dimension. In the present embodiment, the switching of the on-off valve 3 between the first operation state and the second operation state is achieved by rotating the movable plate 32. Specifically, an end of the second cylinder 2 far away from the first cylinder 1 is provided with a turned-over edge 21 which is bent inwards; an annular groove 22 is formed between the flange 21 and the fixing plate 31; the movable plate 32 is mounted in the annular groove 22.

Referring to fig. 3 and 7, in implementation, the first through hole 312 and the second through hole 321 are both fan-shaped holes. Specifically, when the on-off valve 3 is in the second operating state, the first through hole 312 coincides with the second through hole 321.

In order to facilitate the control of the rotation of the movable plate 32, the following improvements are further made in this embodiment, specifically, the second cylinder 2 is provided with a third through hole 23; the third through hole 23 communicates with the annular groove 22; the movable plate 32 is provided with a first handle 322 in a radial direction, and the first handle 322 passes through the third through hole 23. When the state of the switch valve 3 needs to be switched, the switch valve is realized by pulling the first handle.

Example 2

The present embodiment is a further improvement on the basis of embodiment 1, and the same points are not described in detail, and only the differences are described below.

Example 1 has been able to solve the problems presented in the background art, which is advantageous for improving the test accuracy. However, it is considered that it is inconvenient to switch the operating state of the on-off valve 3 after the auxiliary feeding tool is placed on the upper end of the cylinder. The present embodiment is further improved with respect to the on-off valve 3, that is, the main difference between the present embodiment and embodiment 1 is the arrangement of the on-off valve 3.

Specifically, referring to fig. 8 to 11, the fixing shaft 311 is located at a side of the fixing plate 31 near the first cylinder 1. That is, the fixed shaft 311 is positioned above the fixed plate 31. The movable plate 32 is provided with a fixed rod 323 on a side far away from the fixed plate 31, and a second handle 324 is provided on an end of the fixed rod 323 far away from the movable plate 32. That is, the movable plate 32 is disposed above the fixed plate 31. That is, in use, the second handle 324 is disposed on the upper side of the fixed plate 31. More specifically, the length of the fixing bar 323 is greater than the sum of the length of the first cylinder 1 and the length of the second cylinder 2. That is, the second handle 324 is positioned above the first identification line 11 to ensure that the concrete sample does not cover the second handle 324.

In a specific implementation, in order to facilitate moving the auxiliary feeding tool, a third handle 13 may be disposed on the outer side of the first cylinder 1, and the two third handles 13 are symmetrically disposed at the outer periphery of the first cylinder 1. The auxiliary feeding tool is conveniently lifted by the two third handles 13.

Example 3

This example is a specific application of example 1, i.e. the auxiliary feeding tool proposed in example 1 or example 2 was applied to a concrete pressure bleeding rate test apparatus.

Referring to fig. 12 to 14, the present embodiment provides a concrete pressure bleeding rate test apparatus, which includes a bracket 4, a bottom plate 5, a sealing ring 6, a mesh screen 7, a cylinder 8, a top cover 9, a nut 10, a barostat and a gas tank; the auxiliary feeding tool is as described in embodiment 1 or embodiment 2.

Specifically, the support 4 includes a circular base 41, and a plurality of at least three support rods 42 circumferentially distributed along a center line of the base 41; the bottom plate 5 is fixedly connected with the supporting rod 42 and is positioned above the base 41; a water outlet is arranged on the bottom plate 5; the mesh screen 7 is placed on the bottom plate 5, the cylinder 8 is used for being placed on the mesh screen 7, and the sealing ring 6 is installed between the bottom plate 5 and the cylinder 8; the auxiliary feeding tool is used for feeding materials twice from the upper end of the cylinder body 8; the top cover 9 is provided with mounting holes, and a plurality of support rods 42 respectively penetrate through the corresponding mounting holes; the nuts 10 are respectively in threaded connection with the supporting rods 42 so as to press the top cover 9, so that two ends of the cylinder 8 are respectively sealed with the bottom plate 5 and the top cover 9; the top cover 9 is provided with an air inlet hole for being connected with the barostat, and the barostat is communicated with the air tank. It should be noted that the difference between this embodiment and the prior art is only that an auxiliary feeding tool is added, and the auxiliary feeding tool, embodiment 1 and embodiment 2 have been fully described, and are not repeated here.

While the foregoing is directed to embodiments of the present utility model, other and further embodiments of the utility model may be devised without departing from the basic scope thereof, and the scope thereof is determined by the claims that follow.

Claims (10)

1. The utility model provides a concrete pressure bleeding rate test auxiliary feeding instrument which characterized in that: comprising the steps of (a) a step of,

the device comprises a first cylinder body (1), wherein one end of the first cylinder body (1) is larger than the other end of the first cylinder body in diameter;

the second cylinder body (2) is fixedly connected to one end of the first cylinder body (1) with a smaller diameter; the first cylinder (1) is communicated with the second cylinder (2); a first identification line (11) is arranged in the first cylinder (1), and the volume of the first identification line (11) away from one end of the second cylinder (2) away from the first cylinder (1) is equal to half of the feeding volume of a single test;

the switch valve (3) is arranged at one end of the second cylinder (2) far away from the first cylinder (1); the switch valve (3) has two working states, and in the first working state, the switch valve (3) is closed; in a second operating state, the switching valve (3) is opened.

2. The concrete pressure bleeding rate test auxiliary feeding tool according to claim 1, wherein: a second identification line (12) is arranged in the first cylinder body (1), and the periphery of the first cylinder body (1) corresponding to the second identification line (12) is equal to the inner diameter of the cylinder body (8) for testing; and the distance between the second identification line (12) and the switch valve (3) is between 28 and 32 mm.

3. The concrete pressure bleeding rate test auxiliary feeding tool according to claim 1, wherein: the switch valve (3) comprises a fixed plate (31) and a movable plate (32);

the fixed plate (31) is fixedly arranged on the second cylinder body (2), and a first through hole (312) is formed in the fixed plate (31);

the movable plate (32) and the fixed plate (31) are arranged in a sliding way;

when the switch valve (3) is in a first working state, the movable plate (32) seals the first through hole (312);

when the switch valve (3) is in the second working state, the movable plate (32) is dislocated with the first through hole (312).

4. A concrete pressure bleeding rate test auxiliary feeding tool according to claim 3, wherein: the fixed plate (31) is provided with a fixed shaft (311), the movable plate (32) is rotationally connected with the fixed shaft (311), and one side of the movable plate (32) is abutted against the fixed plate (31);

the movable plate (32) is provided with a second through hole (321);

when the switch valve (3) is in a first working state, the first through hole (312) is blocked by the movable plate (32), and the second through hole (321) is blocked by the fixed plate (31);

when the switch valve (3) is in the second working state, the first through hole (312) is overlapped with the second through hole (321).

5. The concrete pressure bleeding rate test auxiliary feeding tool according to claim 4, wherein: one end of the second cylinder (2) far away from the first cylinder (1) is provided with a turned edge (21) which is bent inwards; an annular groove (22) is formed between the flanging (21) and the fixing plate (31); the movable plate (32) is mounted in the annular groove (22).

6. The concrete pressure bleeding rate test auxiliary feeding tool according to claim 5, wherein: the first through hole (312) and the second through hole (321) are fan-shaped holes.

7. The concrete pressure bleeding rate test auxiliary feeding tool according to claim 5, wherein: a third through hole (23) is formed in the second cylinder (2);

the third through hole (23) is communicated with the annular groove (22);

the movable plate (32) is provided with a first handle (322) in a radial direction, and the first handle (322) passes through the third through hole (23).

8. The concrete pressure bleeding rate test auxiliary feeding tool according to claim 4, wherein: the fixed shaft (311) is positioned at one side of the fixed plate (31) close to the first cylinder (1);

one side of the movable plate (32) far away from the fixed plate (31) is provided with a fixed rod (323), and one end of the fixed rod (323) far away from the movable plate (32) is provided with a second handle (324).

9. The concrete pressure bleeding rate test auxiliary feeding tool according to claim 8, wherein: the length of the fixing rod (323) is larger than the sum of the length of the first cylinder (1) and the length of the second cylinder (2).

10. The concrete pressure bleeding rate test device comprises a bracket (4), a bottom plate (5), a sealing ring (6), a mesh screen (7), a cylinder body (8), a top cover (9), a nut (10), a barostat and a gas tank; comprising an auxiliary feeding tool according to any one of claims 1-9;

the bracket (4) comprises a circular base (41) and a plurality of at least three supporting rods (42) which are circumferentially distributed along the central line of the base (41);

the bottom plate (5) is fixedly connected with the supporting rod (42) and is positioned above the base (41); a water outlet is arranged on the bottom plate (5);

the mesh screen (7) is placed on the bottom plate (5), the cylinder body (8) is used for being placed on the mesh screen (7), and the sealing ring (6) is installed between the bottom plate (5) and the cylinder body (8);

the auxiliary feeding tool is used for feeding materials twice from the upper end of the cylinder body (8);

the top cover (9) is provided with mounting holes, and a plurality of supporting rods (42) respectively penetrate through the corresponding mounting holes; the nuts (10) are respectively in threaded connection with the supporting rods (42) so as to compress the top cover (9), so that two ends of the cylinder body (8) are respectively sealed with the bottom plate (5) and the top cover (9);

the top cover (9) is provided with an air inlet hole used for being connected with the barostat, and the barostat is communicated with the air tank.

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