Cement sampler

Abstract

The utility model provides a cement sampler, technical scheme is as follows: cement sampler, including the outer tube of sleeve joint setting, inner tube, outer tube, inner tube correspond and have a plurality of matched outer slot hole and inner slot hole, the outer side of inner slot hole is provided with the sealing sleeve, the middle part of sealing sleeve is provided with the convex part that extends to the outer slot hole, the tail end of outer tube is provided with the dust cover that prevents the cement dust to scatter out, the utility model through setting sealing sleeve and dust cover assembly between the outer tube of sampler, inner tube, through setting sealing sleeve and convex part on the outer side of inner slot hole, and install dust cover on the tail end of inner tube, effectively prevented the cement dust leakage and pollution, improved the sampling accuracy and the cleanliness of operating environment, has the advantages such as simple structure, convenient to use.

Description

Technical Field

[0001] This utility model relates to the field of samplers, specifically to cement samplers. Background Technology

[0002] Before use, bagged cement requires physical and mechanical property testing. The multi-layer tubular sampler commonly used in sampling has significant drawbacks. This sampler consists of an inner tube and an outer tube with corresponding slots. In actual operation, the entire assembly is inserted into the cement bag, and the inner tube is rotated to open the slot, allowing the powder to enter the inner tube along the slot. After the powder enters the inner tube through the slot, it is rotated 180 degrees to seal it. However, the existing design has the following problems: First, the gap between the inner and outer tubes allows powder to seep into the annular gap, causing not only rotational jamming but also creating a difficult-to-clean source of pollution. Second, the dust pollution generated during sampling and pouring severely affects the operating environment. More seriously, the existing equipment has insufficient sealing performance; powder leakage at the slot joint reduces sampling accuracy, and the lack of an effective dust suppression device at the tail end leads to deterioration of workplace air quality. These problems not only reduce sampling efficiency but also threaten the accuracy of test data and the health of operators. Utility Model Content

[0003] To address the aforementioned problems, this utility model provides a cement sampler.

[0004] This utility model is achieved through the following technical solution:

[0005] This application provides a cement sampler, the technical solution of which is as follows: The cement sampler includes an outer tube and an inner tube that are sleeved together. The outer tube and the inner tube have multiple matching outer and inner grooves. A sealing sleeve is provided on the outside of the inner groove. A protrusion extending towards the outer groove is provided in the middle of the sealing sleeve. A dust cover is installed at the tail end of the outer tube to prevent cement dust from being emitted.

[0006] Furthermore, this application also proposes that the sealing sleeve is fitted onto the outer wall of the inner tube and located in the annular gap between the outer tubes, and that the sealing sleeve has a feed hole that matches the inner groove hole, with the protrusion located on the upper part of the edge of the feed hole.

[0007] Furthermore, this application also proposes that the sealing sleeve is installed in the installation groove opened on the inner wall of the outer tube, and the sealing sleeve is made of rigid PVC pipe with an outer rubber layer.

[0008] Furthermore, this application also proposes that the dust cover includes a support plate sleeved and fixed to the tail of the inner tube, and the outer side of the support plate has a dustproof cloth that is easy to remove.

[0009] Furthermore, this application also proposes that the outer side of the support plate has an annular groove, and an elastic rope arranged annularly on the inner side of the dustproof cloth is engaged in the annular groove.

[0010] Furthermore, this application also proposes that the outlet of the inner tube extends to the outside of the outer tube, and that both the inner and outer tubes are provided with handles at their ends, with the dust cover located at the front end of the handle of the outer tube.

[0011] Compared with existing technologies, the advantages of this utility model are: by setting a sealing sleeve and a dust cover assembly between the outer tube and the inner tube of the sampler, by setting a sealing sleeve and a protrusion on the outside of the inner groove hole, and by installing a dust cover at the end of the inner tube, this utility model effectively prevents cement dust leakage and pollution, improves sampling accuracy and the cleanliness of the operating environment, and has the advantages of simple structure and convenient use. Attached Figure Description

[0012] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0013] Figure 2 yes Figure 1 The diagram marked A is a magnified view of a local structure.

[0014] Figure 3 yes Figure 1 The diagram marked B is a magnified view of a local structure.

[0015] Figure 4 This is a schematic diagram of the structure of the practical sealing sleeve;

[0016] Figure 5 This is a practical diagram illustrating the sampling process from packaging bags;

[0017] In the diagram: outer tube 1, inner tube 2, inner groove 3, outer groove 4, limiting post 5, handle 6, mounting groove 7, sealing sleeve 8, feed hole 81, protrusion 9, support plate 10, annular groove 11, dustproof cloth 12, elastic rope 13, packaging bag 14. Detailed Implementation

[0018] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments:

[0019] like Figure 1-5 As shown, this application proposes a cement sampler, including an outer tube and an inner tube that are sleeved together. The outer tube and the inner tube have a plurality of matching outer grooves and inner grooves. A sealing sleeve is provided on the outside of the inner groove, and a protrusion extending into the outer groove is provided in the middle of the sealing sleeve. A dust cover is installed at the tail end of the outer tube to prevent cement dust from being emitted.

[0020] The outer and inner tubes are connected by a sleeve, allowing for relative rotation to align or misalign the slots. The outer and inner slots are identical in number and shape, using strip-shaped round holes. Their protrusions enhance the sealing effect. The dust cover can be made of flexible materials such as cloth or plastic film, and is secured to the tail of the outer tube by straps, clips, or adhesive.

[0021] This technical solution, through the design of the sealing sleeve and the protrusion, effectively prevents cement powder from entering the annular gap between the inner and outer pipes, solving the problems of rotational jamming and contamination caused by powder entering the gap in existing technologies. The dust cover reduces dust diffusion during sampling and pouring. The protrusion of the sealing sleeve can better seal the gap when the slot is misaligned, significantly improving sealing performance and ease of use compared to existing technologies.

[0022] Furthermore, this application proposes that the sealing sleeve is fitted onto the outer wall of the inner tube and located in the annular gap between the outer tubes. The sealing sleeve has a feed hole that matches the inner groove, and a protrusion is located on the upper part of the edge of the feed hole. The sealing sleeve is installed in an installation groove on the inner wall of the outer tube, and the sealing sleeve is made of rigid PVC pipe with an outer rubber layer.

[0023] Specifically, the inlet hole of the sealing sleeve matches the inner groove hole, allowing cement powder to smoothly enter the inner tube. The protrusion prevents cement powder from leaking from the edge of the inlet hole. The sealing sleeve is made of rigid PVC pipe with an outer rubber layer, ensuring both structural strength and improved sealing performance. The mounting groove design facilitates the fixing and replacement of the sealing sleeve.

[0024] Therefore, this technical solution effectively solves the problem of cement powder leakage from the gap between the inner and outer pipes by optimizing the structure and installation method of the sealing sleeve. The combination design of the rigid PVC pipe and rubber layer of the sealing sleeve ensures both sealing effect and improved wear resistance. The matching design of the feed hole and the protrusion further prevents cement powder leakage. The installation groove simplifies the installation and maintenance of the sealing sleeve. This solution reduces cement powder leakage and contamination while ensuring the normal operation of the sampler, improving sampling efficiency and operational convenience.

[0025] Furthermore, this application also proposes that the sealing sleeve is installed in the installation groove opened on the inner wall of the outer tube, and the sealing sleeve is made of rigid PVC pipe with an outer rubber layer.

[0026] Specifically, the mounting groove is an annular groove structure, with a depth slightly greater than the thickness of the sealing sleeve, facilitating a secure embedding of the sealing sleeve. The rigid PVC pipe possesses sufficient structural strength to withstand the mechanical stress during cement sampling. The rubber layer is preferably made of wear-resistant nitrile rubber, with a thickness controlled at 1-2 mm, and is tightly bonded to the PVC pipe via a hot-pressing process. As a preferred embodiment, the axial length of the sealing sleeve should be greater than the distribution area of ​​the inner groove holes to ensure that all inner groove holes are effectively covered.

[0027] Therefore, this technical solution achieves a dual sealing effect by fixing the sealing sleeve in a specially designed mounting groove: the rigid PVC pipe provides the main structural support, preventing the sealing sleeve from deforming during rotating sampling; the outer rubber layer fills the microscopic gaps between the sealing sleeve and the inner wall of the outer pipe, effectively preventing cement dust from seeping in. Compared with traditional sealing structures without fixed installation, this design significantly improves sealing reliability and solves the problems of sampler rotation jamming and dust contamination. At the same time, the modular sealing sleeve structure facilitates maintenance and replacement, extending the sampler's service life.

[0028] Furthermore, this application proposes that the dust cover includes a support plate sleeved and fixed to the tail end of the inner tube, with a removable dustproof cloth installed on the outer side of the support plate. The support plate is fixedly connected to the tail end of the inner tube by a sleeve connection. The support plate is made of transparent acrylic, which facilitates observation and sampling. The dustproof cloth is installed on the outer side of the support plate through a detachable structure, such as using Velcro, snaps, or hooks for quick installation and removal. The dustproof cloth can be made of breathable and dustproof materials such as non-woven fabric or nylon mesh.

[0029] Specifically, the support plate has an annular groove on its outer side, within which an elastic cord, arranged in a ring on the inner side of the dustproof cloth, is engaged. The elastic cord can be made of elastic rubber or spring rope, achieving a tight engagement with the annular groove through elastic deformation. The cross-sectional shape of the annular groove can be designed as a semi-circle to enhance engagement stability. An annular channel can be sewn along the edge of the dustproof cloth for threading the elastic cord; the length of the elastic cord can be adjusted to accommodate support plates of different sizes.

[0030] Therefore, this technical solution effectively solves the problem of cement dust diffusion during sampling by setting up a detachable dust cover structure. The support plate provides a stable installation base, and the dust cover prevents dust from escaping from the tail of the inner tube. The detachable design facilitates cleaning and maintenance, and the cooperation between the annular groove and the elastic rope ensures that the dust cover is firmly installed and has good sealing performance. Compared with a fixed dust cover structure, this solution makes it easier for operators to install, remove, and replace dust cover components, improving the convenience and hygiene of sampling operations.

[0031] Furthermore, this application proposes that the outlet of the inner tube extends to the outside of the outer tube, and that handles are provided at the ends of both the inner and outer tubes, with a dust cover located at the front end of the handle on the outer tube. Specifically, the extended end design of the inner tube facilitates observation and manipulation during sampling operations, and the two handles are fixed to the ends of the inner and outer tubes respectively, allowing for independent rotation. The dust cover, located at the front end of the handle on the outer tube, effectively prevents dust diffusion when pouring samples.

[0032] As a preferred embodiment, the inner tube extension length can be designed to exceed the outer tube by 5-10cm, ensuring operating space while avoiding structural redundancy. The distance between the dust cover and the handle is controlled within the range of 3-5cm to ensure dust protection without affecting the handle's rotation function.

[0033] The implementation principle of the cement sampler in this application embodiment is as follows:

[0034] When taking samples, open the seal of the cement packaging bag 14, insert the sampler into the packaging bag 14, hold the handles 6 of the outer tube 1 and the inner tube 2 with both hands, rotate the inner tube 2 to limit the rotation by 180 degrees through the limiting post 5, so that the inner groove hole 3 and the outer groove hole 4 of the inner tube 2 and the outer tube 1 are aligned and the inner groove hole 3 is exposed. The powder from different parts of the packaging bag 14 enters the inner tube 2 through the inner groove hole 3. Then rotate the inner tube 2 in the opposite direction to close the inner groove hole 3. Pull out the sampler as a whole and discharge the powder from the tail of the inner tube 2.

[0035] When the outer tube 1 and inner tube 2 rotate for sampling, the inner tube 2 and the sealing sleeve 8 rotate. The sealing sleeve 8 is sealed and fixed to the outer tube 1 through the protrusion 9, thereby preventing the material from seeping in from the gap between the outer tube 1 and the inner tube 2. This effectively solves the problem of rotation jamming and contamination caused by powder entering the gap in the prior art. At the same time, when the sampler is inserted for sampling, the dustproof cloth 12 of the dust cover covers the sealing of the packaging bag 14 to prevent the dust inside the packaging bag 14 from spreading to the outside. The transparent support plate 10 makes it easy to observe the rotation sampling.

[0036] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A cement sampler, comprising an outer tube (1) and an inner tube (2) sleeved together, wherein the outer tube (1) and the inner tube (2) are respectively provided with a plurality of matching outer slots (4) and inner slots (3), characterized in that: A sealing sleeve (8) is provided on the outside of the inner groove (3), and a protrusion (9) extending outward from the middle of the sealing sleeve (8) is provided. A dust cover is installed at the tail end of the outer tube (1) to prevent cement dust from escaping.

2. The cement sampler according to claim 1, characterized in that: The sealing sleeve (8) is fitted onto the outer wall of the inner tube (2) and located in the annular gap between the outer tube (1). The sealing sleeve (8) has a feed hole (81) that matches the inner groove hole (3). The protrusion (9) is located on the upper part of the edge of the feed hole (81).

3. The cement sampler according to claim 2, characterized in that: The sealing sleeve (8) is set in the mounting groove (7) opened on the inner wall of the outer tube (1). The sealing sleeve (8) is made of rigid PVC pipe and has a rubber layer on the outside.

4. The cement sampler according to claim 1, characterized in that: The dust cover includes a support plate (10) that is sleeved and fixed to the tail of the inner tube (2), and the outer side of the support plate (10) has a dustproof cloth (12) that is easy to remove.

5. The cement sampler according to claim 4, characterized in that: The support plate (10) has an annular groove (11) on its outer side, and a loose rope (13) arranged in annularly on the inner side of the dustproof cloth (12) is engaged in the annular groove (11).

6. The cement sampler according to claim 1, characterized in that: The outlet of the inner tube (2) extends to the outside of the outer tube (1). Both the inner tube (2) and the outer tube (1) are provided with handles (6) at their ends. The dust cover is located at the front end of the handle (6) of the outer tube (1).

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