Material sampling device for constructional engineering management

Abstract

The invention discloses a material sampling device for constructional engineering management, the material sampling device comprises a main body unit and a material collecting unit, the main body unit comprises a main hollow column, the bottom of the main hollow column is fixed and communicated with a first guide pipe, two side plates are symmetrically fixed on the outer side of the bottom of the main hollow column, and auxiliary hollow columns are fixed on the bottoms of the side plates; a cylindrical rod is slidably connected into the auxiliary hollow column, a supporting disc is arranged below the main hollow column, two first protruding blocks are symmetrically fixed to the outer side of the supporting disc, the bottom of the cylindrical rod is fixed to the corresponding first protruding blocks, a material storage container is arranged on the supporting disc, the material collecting unit comprises a piston, and the piston is arranged in the main hollow column in a sliding fit mode. Due to the fact that the material storage container is independently arranged below the main hollow column, the liquid materials directly flow into the material storage container every time the liquid materials are collected, the main body unit cannot be polluted, the main body unit can be repeatedly used, and when different liquid materials are collected, only new material storage containers need to be replaced.

Description

Technical Field

[0001] The present invention relates to the technical field of material sampling devices, and particularly to a material sampling device for construction project management. Background Art

[0002] During the construction process, the contracting unit should use various specified detection means and advanced equipment for detection, and the supervision unit uses its own equipment for parallel detection to provide reference data for the judgment of project quality. The supervision unit shall conduct acceptance inspections for the entry of materials and equipment, concealed inspections of the project, and acceptance inspections of sub-items and sub-divisions of the project. Through this process, the quality is controlled.

[0003] There are many types of construction engineering materials. For example, granular materials such as sand and cement, and liquid materials such as paint and glue. When sampling some solid and granular materials, it is usually possible to directly sample and then package them in bags. When sampling liquid materials, containers are usually required for storage. Ordinary items such as plastic bags are not convenient for storing them, mainly because the liquid is likely to overflow. When using a container for storage, when sampling liquid materials, it is usually necessary to use some bucket-like utensils to first hold the liquid materials and then transfer the liquid materials into the storage container. For some liquid materials with high viscosity, such as glue, the transfer process is very troublesome, and the viscous liquid materials will also adhere to the inside of the bucket-like utensils and are very difficult to clean, resulting in the inability to reuse the bucket-like utensils when sampling the next liquid material. Summary of the Invention

[0004] (I) Object of the Invention

[0005] In view of this, the object of the present invention is to provide a material sampling device for construction project management. The technical problem to be solved is that when sampling liquid materials, it is usually necessary to use some bucket-like utensils to first hold the liquid materials and then transfer the liquid materials into the storage container. For some liquid materials with high viscosity, such as glue, the transfer process is very troublesome, and the viscous liquid materials will also adhere to the inside of the bucket-like utensils and are very difficult to clean, resulting in the inability to reuse the bucket-like utensils when sampling the next liquid material.

[0006] (II) Technical Solution

[0007] To achieve the above technical object, the present invention provides a material sampling device for construction project management:

[0008] It includes a main body unit and an aggregate unit. The main body unit includes a main hollow column. A conduit one is fixedly connected to the bottom of the main hollow column. Two side plates are symmetrically and fixedly arranged on the outer side of the bottom of the main hollow column. A secondary hollow column is fixedly arranged at the bottom of the side plate. A cylindrical rod is slidably connected in the secondary hollow column. A support disc is arranged below the main hollow column. Two first bumps are symmetrically and fixedly arranged on the outer side of the support disc. The bottom of the cylindrical rod is fixed to the corresponding first bump. A storage container is arranged on the support disc. The aggregate unit includes a piston. The piston is slidably fitted in the main hollow column. A piston rod is fixed to the piston. The piston rod penetrates through the main hollow column and slides inside the main hollow column. A plurality of ventilation holes are formed in the top of the main hollow column. Two pinch handles are symmetrically and fixedly arranged on the outer side of the top of the piston rod. A second spring is sleeved on the outer side of the piston rod. One end of the second spring abuts against the piston, and the other end of the second spring abuts against the inner wall of the top of the main hollow column. A control component for controlling the absorption of liquid material into the storage container is arranged in the main hollow column.

[0009] Preferably, two connecting plates are symmetrically and fixedly arranged at the top of the main hollow column. A grip is fixedly arranged on the tops of the two connecting plates. A second stroke groove is formed in the connecting plate. The two pinch handles are respectively slidably fitted in the corresponding second stroke grooves.

[0010] Preferably, a plurality of first stroke grooves are formed in the secondary hollow column. A baffle is fixed to the top of the cylindrical rod. The baffle is slidably fitted in the secondary hollow column. A plurality of limiting blocks are fixedly arranged on the outer side of the baffle at equal intervals along its radial direction. The plurality of limiting blocks are respectively slidably fitted in the corresponding first stroke grooves. A first spring is sleeved on the outer side of the cylindrical rod. One end of the first spring abuts against the inner wall of the secondary hollow column, and the other end of the first spring abuts against the baffle.

[0011] Preferably, a groove is formed in the top of the support disc. The storage container is placed in the groove. A second bump is fixedly arranged on the outer side of the support disc. A round hole is formed in the second bump. A suction pipe is slidably connected in the round hole. One end of the suction pipe is fixedly connected and communicated with a conduit four, and the other end of the suction pipe is fixedly connected and communicated with a conduit five.

[0012] Preferably, a conduit two and a conduit three are fixedly connected and communicated with the storage container. A first conical rubber ring and a first annular rubber ring are fixed in the conduit two. The first conical rubber ring and the first annular rubber ring are fixed to each other. A second annular rubber ring and a second conical rubber ring are fixed in the conduit three. The second annular rubber ring and the second conical rubber ring are fixed to each other.

[0013] Preferably, the first conduit can be embedded into the second conduit, the fourth conduit can be embedded into the third conduit. The outer side of the first conduit can be in contact with the inner wall of the first annular rubber ring, and the outer side of the fourth conduit can be in contact with the inner wall of the second annular rubber ring. The vertical cross-sectional diameter of the first conical rubber ring gradually decreases from the second conduit towards the storage container, and the vertical cross-sectional diameter of the second conical rubber ring gradually decreases from the third conduit towards the storage container. A first pipe plug can also be placed in the second conduit, and a second pipe plug can also be placed in the third conduit.

[0014] Preferably, the control assembly includes a first partition fixed to the inner wall of the bottom of the main hollow column. An air vent groove is formed in the first partition. A first blocking plate is arranged on the top of the first partition. The first blocking plate can block the air vent groove. A first connecting column is fixed to the top of the first blocking plate. A plurality of first strip-shaped plates are fixed to the outer side of the first connecting column at equal intervals along its radial direction.

[0015] Preferably, a first sliding rod is fixed to the bottom of the first strip-shaped plate. The first sliding rod penetrates through the first partition and seals and slides inside the first partition. A first stop block is fixed to the bottom of the first sliding rod. A third spring is sleeved on the outer side of the first sliding rod. One end of the third spring abuts against the first stop block, and the other end of the third spring abuts against the first partition.

[0016] Preferably, an exhaust pipe is fixed and communicated with the bottom of the main hollow column. The exhaust pipe is located between the first partition and the piston. A second partition is fixed inside the exhaust pipe. An air vent groove is formed in the second partition. A second blocking plate is arranged on the side of the second partition away from the main hollow column. The second blocking plate can block the air vent groove. A second connecting column is fixed to the side of the second blocking plate away from the second partition. A plurality of second strip-shaped plates are fixed to the outer side of the second connecting column at equal intervals along its radial direction.

[0017] Preferably, a second sliding rod is fixed to one side of the second strip-shaped plate. The second sliding rod penetrates through the second partition and seals and slides inside the second partition. A second stop block is fixed to the end of the second sliding rod close to the main hollow column. A fourth spring is sleeved on the outer side of the second sliding rod. One end of the fourth spring abuts against the second stop block, and the other end of the fourth spring abuts against the second partition.

[0018] It can be seen from the above technical solutions that the present application has the following beneficial effects:

[0019] 1: Pull down the support plate to drive the cylindrical rod to move downward. When the cylindrical rod moves downward, it drives the baffle plate to move downward. When the baffle plate moves downward, it compresses the first spring. Then place the storage container into the groove, release the support plate, and drive the support plate to move upward under the resilience of the first spring, so that the first conduit is embedded into the second conduit. Then pull the fourth conduit and embed the fourth conduit into the third conduit, that is, the storage container is installed at the bottom of the main hollow column. This installation method is very convenient and is conducive to installing the storage container at the bottom of the main hollow column. That is, when the storage container stores liquid materials, it is convenient to remove it, that is, it is convenient to collect the liquid materials. Moreover, since the storage container is separately arranged below the main hollow column, when collecting liquid materials each time, the liquid materials directly flow into the storage container without polluting the main unit, enabling the main unit to be reused. When collecting different liquid materials, only need to replace a new storage container.

[0020] 2: Hold the grip, and then use your finger to pull up the pinch handle, so that the pinch handle drives the piston rod and the piston to move upward. When the piston moves upward, the pressure inside the main hollow column is reduced. At this time, the second blocking plate blocks the second ventilation groove, and at this time the first blocking plate will move upward so that it no longer blocks the first ventilation groove, enabling the air in the storage container to be pumped into the main hollow column through the second conduit and the first conduit, reducing the pressure inside the storage container, that is, the liquid material will be adsorbed into the storage container, that is, the sampling of the liquid material is completed. Then release the pinch handle. At this time, drive the piston to move downward under the resilience of the second spring. When the first ventilation groove moves downward, the air inside the main hollow column squeezes the second blocking plate and drives the second blocking plate to move. When the second blocking plate no longer seals the second ventilation groove, at this time when the piston moves downward, the air inside the main hollow column is discharged to the outside through the exhaust pipe. This process can perform the sampling of the liquid material by pulling up the pinch handle, and when releasing the pinch handle, it can automatically discharge the air inside the main hollow column, thus facilitating the next sampling. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only the embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained according to the provided drawings without creative efforts.

[0022] Figure 1 It is a schematic structural diagram of a material sampling device for construction project management provided by the present invention;

[0023] Figure 2 It is a schematic cross-sectional structure diagram of the aggregate unit provided by the present invention;

[0024] Figure 3 It is a schematic diagram of another perspective of the cross-sectional structure of the aggregate unit provided by the present invention;

[0025] Figure 4Partial structural disassembly and enlarged schematic diagram of a material sampling device for construction project management provided by the present invention;

[0026] Figure 5 Partial structural disassembly and enlarged schematic diagram of a material sampling device for construction project management provided by the present invention;

[0027] Figure 6 Internal structural schematic diagram of the exhaust pipe provided by the present invention;

[0028] Figure 7 Another perspective schematic diagram of the internal structure of the exhaust pipe provided by the present invention;

[0029] Figure 8 Cross-sectional view of the storage container provided by the present invention.

[0030] Description of the drawings: 100, main body unit; 101, main hollow column; 102, conduit one; 103, side plate; 104, auxiliary hollow column; 105, cylindrical rod; 106, support plate; 107, first convex block; 108, storage container; 109, conduit two; 110, conduit three; 111, baffle; 112, limit block; 113, first travel groove; 114, first spring; 115, groove; 116, second convex block; 117, round hole; 118, straw; 119, conduit four; 120, conduit five; 121, first conical rubber ring; 122, first annular rubber ring; 123, second annular rubber ring; 124, second conical rubber ring; 125, first pipe plug; 126, second pipe plug; 200, aggregate unit; 201, piston; 202, piston rod; 203, handle; 204, second spring; 205, connecting plate; 206, second travel groove; 207, grip; 208, vent hole; 209, first partition; 210, first ventilation groove; 211, first blocking plate; 212, first connecting column; 213, first strip plate; 214, first slide bar; 215, first stop block; 216, third spring; 217, exhaust pipe; 218, second partition; 219, second ventilation groove; 220, second blocking plate; 221, second connecting column; 222, second slide bar; 223, second stop block; 224, fourth spring; 225, second strip plate. Detailed implementation manners

[0031] The following description is essentially exemplary only and is not intended to limit the present disclosure, its application, and uses. It should be understood that in all these drawings, the same or similar reference numerals indicate the same or similar parts and features. Each drawing only schematically shows the concept and principle of the implementation manner of the present disclosure, and does not necessarily show the specific dimensions and their ratios of each implementation manner of the present disclosure. In a specific part of a specific drawing, the relevant details or structures of the implementation manner of the present disclosure may be illustrated in an exaggerated manner.

[0032] Refer toFigure 1-8 :

[0033] Example 1

[0034] A material sampling device for construction project management, comprising a main body unit 100 and an aggregate unit 200. The main body unit 100 includes a main hollow column 101. A conduit 102 is fixedly connected to the bottom of the main hollow column 101. Two side plates 103 are symmetrically fixed to the outer side of the bottom of the main hollow column 101. A secondary hollow column 104 is fixed to the bottom of the side plate 103. A cylindrical rod 105 is slidably connected within the secondary hollow column 104. A support plate 106 is provided below the main hollow column 101. Two first convex blocks 107 are symmetrically fixed to the outer side of the support plate 106. The bottom of the cylindrical rod 105 is fixed to the corresponding first convex block 107. A storage container 108 is provided on the support plate 106. The aggregate unit 200 includes a piston 201. The piston 201 is slidably fitted within the main hollow column 101. A piston rod 202 is fixed to the piston 201. The piston rod 202 passes through the main hollow column 101 and slides within the main hollow column 101. A plurality of ventilation holes 208 are provided at the top of the main hollow column 101. Two pinch handles 203 are symmetrically fixed to the outer side of the top of the piston rod 202. A second spring 204 is sleeved on the outer side of the piston rod 202. One end of the second spring 204 abuts against the piston 201, and the other end of the second spring 204 abuts against the inner wall of the top of the main hollow column 101. A control assembly for controlling the absorption of liquid material into the storage container 108 is provided within the main hollow column 101.

[0035] Among them, two connecting plates 205 are symmetrically fixed to the top of the main hollow column 101. A grip 207 is jointly fixed to the tops of the two connecting plates 205. A second travel groove 206 is provided within the connecting plate 205. The two pinch handles 203 are respectively slidably fitted within the corresponding second travel grooves 206. A plurality of first travel grooves 113 are provided within the secondary hollow column 104. A baffle 111 is fixed to the top of the cylindrical rod 105. The baffle 111 is slidably fitted within the secondary hollow column 104. A plurality of limiting blocks 112 are equidistantly fixed to the outer side of the baffle 111 along its radial direction. The plurality of limiting blocks 112 are respectively slidably fitted within the corresponding first travel grooves 113. A first spring 114 is sleeved on the outer side of the cylindrical rod 105. One end of the first spring 114 abuts against the inner wall of the secondary hollow column 104, and the other end of the first spring 114 abuts against the baffle 111. A groove 115 is provided at the top of the support plate 106. The storage container 108 is placed within the groove 115. A second convex block 116 is fixed to the outer side of the support plate 106. A round hole 117 is provided within the second convex block 116. A suction pipe 118 is slidably connected within the round hole 117. One end of the suction pipe 118 is fixedly connected and communicated with a conduit 119, and the other end of the suction pipe 118 is fixedly connected and communicated with a conduit 120. A conduit 109 and a conduit 110 are fixedly connected and communicated with the storage container 108. A first pipe plug 125 can also block the conduit 109, and a second pipe plug 126 can also block the conduit 110.

[0036] In use, first pull out the pipe plug one 125 and the pipe plug two 126 from the conduit two 109 and the conduit three 110 respectively, and then pull down the support plate 106 to drive the cylindrical rod 105 to move downward. At this time, the cylindrical rod 105 drives the baffle plate 111 to move downward in the secondary hollow column 104. When the baffle plate 111 moves downward, it compresses the first spring 114. Then place the bottom of the storage container 108 into the groove 115, and then release the support plate 106. At this time, under the resilience of the first spring 114, the support plate 106 moves upward, so that the conduit one 102 is embedded into the conduit two 109. Then pull the conduit four 119. At this time, the straw 118 slides in the round hole 117, and then embed the conduit four 119 into the conduit three 110, that is, the storage container 108 is installed at the bottom of the main hollow column 101. It should be noted that the diameters of the conduit four 119 and the conduit five 120 are both larger than the diameter of the round hole 117 to prevent the straw 118 from falling off from the round hole 117.

[0037] In addition, a first conical rubber ring 121 and a first annular rubber ring 122 are fixed in the conduit two 109, and the first conical rubber ring 121 and the first annular rubber ring 122 are fixed to each other. A second annular rubber ring 123 and a second conical rubber ring 124 are fixed in the conduit three 110, and the second annular rubber ring 123 and the second conical rubber ring 124 are fixed to each other. The conduit one 102 can be embedded into the conduit two 109, the conduit four 119 can be embedded into the conduit three 110. The outer side of the conduit one 102 can be attached to the inner wall of the first annular rubber ring 122, and the outer side of the conduit four 119 can be attached to the inner wall of the second annular rubber ring 123. The vertical cross-sectional diameter of the first conical rubber ring 121 gradually decreases from the conduit two 109 towards the storage container 108, and the vertical cross-sectional diameter of the second conical rubber ring 124 gradually decreases from the conduit three 110 towards the storage container 108.

[0038] It should be noted that due to the setting of the first conical rubber ring 121, the conduit one 102 can be smoothly embedded into the first annular rubber ring 122, and the outer side of the conduit one 102 is closely attached to the inner wall of the first annular rubber ring 122, ensuring the sealing performance between the conduit one 102 and the conduit two 109. Due to the setting of the second conical rubber ring 124, the conduit four 119 can be smoothly embedded into the second annular rubber ring 123, and the outer side of the conduit four 119 is closely attached to the inner wall of the second annular rubber ring 123, ensuring the sealing performance between the conduit four 119 and the second annular rubber ring 123.

[0039] Embodiment Two

[0040] A material sampling device for construction project management. On the basis of Embodiment 1, the control component includes a first partition plate 209 fixed to the inner wall of the bottom of the main hollow column 101. A first ventilation groove 210 is formed in the first partition plate 209. A first blocking plate 211 is arranged on the top of the first partition plate 209. The first blocking plate 211 can block the first ventilation groove 210. A first connecting column 212 is fixed to the top of the first blocking plate 211. A plurality of first strip plates 213 are fixed to the outer side of the first connecting column 212 at equal intervals along its radial direction. A first sliding rod 214 is fixed to the bottom of the first strip plate 213. The first sliding rod 214 penetrates through the first partition plate 209 and is hermetically slidable inside the first partition plate 209. A first stop block 215 is fixed to the bottom of the first sliding rod 214. A third spring 216 is sleeved on the outer side of the first sliding rod 214. One end of the third spring 216 abuts against the first stop block 215, and the other end of the third spring 216 abuts against the first partition plate 209.

[0041] Furthermore, an exhaust pipe 217 is fixed and communicated with the bottom of the main hollow column 101. The exhaust pipe 217 is located between the first partition plate 209 and the piston 201. A second partition plate 218 is fixed inside the exhaust pipe 217. A second ventilation groove 219 is formed in the second partition plate 218. A second blocking plate 220 is arranged on the side of the second partition plate 218 away from the main hollow column 101. The second blocking plate 220 can block the second ventilation groove 219. A second connecting column 221 is fixed to the side of the second blocking plate 220 away from the second partition plate 218. A plurality of second strip plates 225 are fixed to the outer side of the second connecting column 221 at equal intervals along its radial direction. A second sliding rod 222 is fixed to one side of the second strip plate 225. The second sliding rod 222 penetrates through the second partition plate 218 and is hermetically slidable inside the second partition plate 218. A second stop block 223 is fixed to the end of the second sliding rod 222 close to the main hollow column 101. A fourth spring 224 is sleeved on the outer side of the second sliding rod 222. One end of the fourth spring 224 abuts against the second stop block 223, and the other end of the fourth spring 224 abuts against the second partition plate 218.

[0042] During use, after the storage container 108 is installed below the main hollow column 101, hold the grip 207, then insert the fifth conduit 120 into the liquid material to be taken. Then, pull the pinch handle 203 upward with your finger, so that the pinch handle 203 drives the piston rod 202 to move upward. When the piston rod 202 moves upward, it drives the piston 201 to move upward. When the piston 201 moves upward, it compresses the second spring 204. When the piston 201 moves upward, it reduces the pressure inside the main hollow column 101. At this time, the second blocking plate 220 blocks the second ventilation groove 219. When the pressure inside the main hollow column 101 decreases, the first blocking plate 211 moves upward so that it no longer blocks the first ventilation groove 210. When the first ventilation groove 210 moves upward, it drives the first connecting column 212, the first strip plate 213, the first sliding rod 214, and the first block 215 to move upward, and the first block 215 compresses the third spring 216, thereby pumping the air in the storage container 108 to the inside of the main hollow column 101 through the second conduit 109 and the first conduit 102, reducing the pressure inside the storage container 108. That is, the liquid material will be adsorbed into the storage container 108 through the fifth conduit 120, the straw 118, the fourth conduit 119, and the third conduit 110, that is, the sampling of the liquid material is completed;

[0043] Then release the pinch handle 203. At this time, under the resilience of the second spring 204, it drives the piston 201 to move downward. When the piston 201 moves downward, the first blocking plate 211 blocks the first ventilation groove 210. And when the first ventilation groove 210 moves downward, the air inside the main hollow column 101 squeezes the second blocking plate 220 and drives the second blocking plate 220 to move. When the second blocking plate 220 moves, it drives the second connecting column 221, the second sliding rod 222, the second strip plate 225, and the second block 223 to move, so that the second block 223 compresses the fourth spring 224. And when the second blocking plate 220 moves, it no longer seals the second ventilation groove 219. At this time, when the piston 201 moves downward, the air inside the main hollow column 101 is discharged to the outside through the exhaust pipe 217. It should be noted that the elastic coefficient of the second spring 204 is much larger than the sum of the elastic coefficients of the multiple fourth springs 224.

[0044] In the above text, the exemplary embodiments of the solution proposed by the present disclosure are described in detail with reference to the preferred embodiments. However, those skilled in the art can understand that, without departing from the concept of the present disclosure, various modifications and variations can be made to the above specific embodiments, and various combinations of the technical features and structures proposed by the present disclosure can be made without exceeding the protection scope of the present disclosure. The protection scope of the present disclosure is determined by the appended claims.

Claims

1. A material sampling device for construction engineering management, characterized in that: include: The main body unit comprises a main hollow column, the bottom of the main hollow column is fixed and connected with a conduit 1, two side plates are symmetrically fixed on the outer side of the bottom of the main hollow column, a secondary hollow column is fixed on the bottom of the side plate, a cylindrical rod is slidably connected inside the secondary hollow column, a support plate is arranged below the main hollow column, two protrusions 1 are symmetrically fixed on the outer side of the support plate, the bottom of the cylindrical rod is fixed to the corresponding protrusion 1, and a storage container is arranged on the support plate; The material collecting unit comprises a piston, which is slidably fitted in a main hollow column, a piston rod is fixed on the piston, the piston rod passes through the main hollow column and slides in the main hollow column, a plurality of ventilation holes are provided on the top of the main hollow column, two pinch handles are symmetrically fixed on the outer side of the top of the piston rod, a spring 2 is sleeved on the outer side of the piston rod, one end of the spring 2 is against the piston, and the other end of the spring 2 is against the inner wall of the top of the main hollow column, and a control component for controlling the absorption of liquid material into the storage container is provided in the main hollow column.

2. A material sampling device for construction engineering management according to claim 1, characterized in that: Two connecting plates are symmetrically fixed on the top of the main hollow column, a handle is commonly fixed on the top of the two connecting plates, a travel groove II is opened in the connecting plate, and the two handles are respectively slidably matched in the corresponding travel groove II.

3. A material sampling device for construction engineering management according to claim 1, characterized in that: A plurality of travel grooves 1 are provided in the secondary hollow column, a baffle is fixed on the top of the cylindrical rod, the baffle is slidably fitted in the secondary hollow column, a plurality of limit blocks are fixed at equal intervals along the radial direction on the outside of the baffle, the plurality of limit blocks are respectively slidably fitted in the corresponding travel grooves 1, a spring 1 is sleeved on the outside of the cylindrical rod, one end of the spring 1 is against the inner wall of the secondary hollow column, and the other end of the spring 1 is against the baffle.

4. A material sampling device for construction engineering management according to claim 3, characterized in that: A groove is provided on the top of the support plate, and the storage container is placed in the groove. A protrusion 2 is fixed on the outer side of the support plate, a circular hole is provided in the protrusion 2, a straw is slidably connected in the circular hole, one end of the straw is fixed and connected to a conduit 4, and the other end of the straw is fixed and connected to a conduit 5.

5. A material sampling device for construction engineering management according to claim 4, characterized in that: A conduit 2 and a conduit 3 are fixed and connected to the storage container, a conical rubber ring 1 and an annular rubber ring 1 are fixed inside the conduit 2, the conical rubber ring 1 and the annular rubber ring 1 are fixed to each other, an annular rubber ring 2 and a conical rubber ring 2 are fixed inside the conduit 3, the annular rubber ring 2 and the conical rubber ring 2 are fixed to each other.

6. A material sampling device for construction engineering management according to claim 5, characterized in that: The catheter one can be embedded in the catheter two, and the catheter four can be embedded in the catheter three. The outer side of the catheter one can fit with the inner wall of the annular rubber ring one, and the outer side of the catheter four can fit with the inner wall of the annular rubber ring two. The vertical section diameter of the conical rubber ring one gradually decreases from the catheter two toward the storage container, and the vertical section diameter of the conical rubber ring two gradually decreases from the catheter three toward the storage container. The catheter two can also be blocked with a pipe plug one, and the catheter three can also be blocked with a pipe plug two.

7. A material sampling device for construction engineering management according to claim 1, characterized in that: The control component includes a partition fixed on the inner wall of the bottom of the main hollow column, a ventilation groove is opened in the partition, a blocking plate is arranged on the top of the partition, and the blocking plate can block the ventilation groove, a connecting column is fixed on the top of the blocking plate, and a plurality of strip plates are fixed on the outer side of the connecting column at equal intervals along its radial direction.

8. A material sampling device for construction engineering management according to claim 7, characterized in that: A slide bar 1 is fixed at the bottom of the strip plate 1, and the slide bar 1 passes through the partition 1 and is located in the partition 1 for sealing and sliding. A stopper 1 is fixed at the bottom of the slide bar 1, and a spring 3 is sleeved on the outer side of the slide bar 1. One end of the spring 3 abuts against the stopper 1, and the other end of the spring 3 abuts against the partition 1.

9. A material sampling device for construction engineering management according to claim 8, characterized in that: An exhaust pipe is fixed and connected to the bottom of the main hollow column, and the exhaust pipe is located between partition one and the piston. A partition two is fixed in the exhaust pipe, and a ventilation groove two is opened in the partition two. A blocking plate two is arranged on the side of the partition two away from the main hollow column, and the blocking plate two can block the ventilation groove two. A connecting column two is fixed on the side of the blocking plate two away from the partition two, and a plurality of strip plates two are fixed on the outer side of the connecting column two at equal intervals along its radial direction.

10. A material sampling device for construction engineering management according to claim 9, characterized in that: A sliding rod 2 is fixed on one side of the strip plate 2, and the sliding rod 2 passes through the partition plate 2 and is located in the partition plate 2 for sealing and sliding. A stopper 2 is fixed on one end of the sliding rod 2 close to the main hollow column, and a spring 4 is sleeved on the outer side of the sliding rod 2, one end of the spring 4 is against the stopper 2, and the other end of the spring 4 is against the partition plate 2.

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