Slurry sampling device and sampling method

Abstract

The invention discloses a slurry sampling device, and belongs to the technical field of precision casting. The problem that a sampling device in the prior art is easily influenced by other slurries with different depths when sampling the slurries is solved. The slurry sampling device comprises a telescopic unit, a connecting unit and a sampling unit which are connected in sequence, the telescopic unit comprises a movable handle and a hollow telescopic structure; the top of the hollow telescopic structure is provided with a pin pivot, and the movable handle is fixed to the top of the hollow telescopic structure through the pin pivot. The movable handle comprises a force application end and a connecting end, and the connecting end is arranged in the hollow telescopic structure; a metal wire is arranged in the hollow telescopic structure, one end of the metal wire is fixedly connected with the connecting end, and the other end of the metal wire penetrates through the bottom of the hollow telescopic structure and is connected with the sampling unit. The full-closed sampling of the slurry by the sampling device is realized, and the accuracy of the sample is ensured.

Description

Technical Field

[0001] The present invention relates to the field of precision casting technology, and in particular to a slurry sampling device and a sampling method. Background Art

[0002] Investment casting belongs to precision casting. In the production process of investment casting, a special refractory coating, namely slurry, needs to be prepared. Slurry is usually a liquid with a certain viscosity made by mixing and stirring various refractory materials. Generally, the slurry is stirred in a slurry barrel, and the viscosity of the slurry at any position in the slurry barrel is required to be uniform. Therefore, after stirring the slurry for a period of time, it is necessary to test whether the viscosity of the slurry at different depths is uniform, otherwise it is necessary to continue stirring.

[0003] The existing sampling device is an open bucket lifting device, not a sealed device. After sampling the slurry in the middle and lower layers of the slurry barrel, as the sampling device is lifted out of the slurry barrel, the slurry in the upper layer will enter the device, resulting in the slurry taken not being pure slurry in the middle and lower layers, and the viscosity of the slurry in the middle and lower layers cannot be accurately measured subsequently. Summary of the invention

[0004] In view of the above analysis, the present invention aims to provide a slurry sampling device and a sampling method to solve the problem that the existing sampling device is easily affected by slurries of different depths when sampling slurry.

[0005] The purpose of the present invention is mainly achieved through the following technical solutions:

[0006] In one aspect, the present invention provides a slurry sampling device, which comprises a telescopic unit, a connecting unit and a sampling unit connected in sequence; the connecting unit is used to connect and fix the hollow telescopic unit and the sampling unit;

[0007] The telescopic unit includes a movable handle and a hollow telescopic structure; a pin fulcrum is provided on the top of the hollow telescopic structure, and the movable handle is fixed to the top of the hollow telescopic structure through the pin fulcrum; the movable handle includes a force-applying end and a connecting end, and the connecting end is provided in the hollow telescopic structure;

[0008] A metal wire is arranged in the hollow telescopic structure, one end of the metal wire is fixedly connected to the connecting end, and the other end of the metal wire passes through the bottom of the hollow telescopic structure and is connected to the sampling unit; when sampling, the movable handle is squeezed by hand, the metal wire is tightened, the sampling unit opens and starts sampling; the movable handle is released by hand, the metal wire is released, the sampling unit closes and stops sampling.

[0009] In one possible design, the sampling unit includes a sampling cylinder;

[0010] A movable cover is provided on the top of the sampling cylinder; the outer top surface of the movable cover is fixedly connected to one end of the metal wire; a first spring hanging ring is provided on the inner bottom surface of the movable cover, and a second spring hanging ring is provided on the inner bottom surface of the sampling cylinder; an elastic component is provided in the sampling cylinder, and both ends of the elastic component are respectively connected to the first spring hanging ring and the second spring hanging ring.

[0011] In a possible design, the movable cover includes a cover body and an annular side wall; the annular side wall is arranged on the outer edge of the cover body, and the two are integrally formed; and a plurality of liquid inlet holes are arranged on the annular side wall.

[0012] In a possible design, a circle of outward-turned limiting bosses is provided at the upper end of the sampling cylinder;

[0013] A plurality of limit screw mounting holes are arranged on the annular side wall of the movable cover body, and the limit screw mounting holes are arranged below the liquid inlet hole; a limit screw is arranged in the limit screw mounting hole, and the limit screw is located below the limit boss.

[0014] In a possible design, a wire hanging ring is provided on the outer top surface of the cover body, and the wire hanging ring is fixedly connected to one end of the metal wire through a wire lock buckle.

[0015] In a possible design, the hollow telescopic structure is a sleeve-type structure, and the hollow telescopic structure is a combination of multiple steel pipes of different diameters; in the steel pipes, both ends of the largest diameter steel pipe are provided with internal threads, and both ends of the smallest diameter steel pipe are provided with external threads; both ends of the steel pipe between the largest diameter and the smallest diameter are provided with external threads and internal threads; steel pipes of adjacent diameters are connected by internal threads or external threads at their ends.

[0016] In a possible design, the pin fulcrum is set at the top of the largest diameter steel pipe; the connecting unit is connected to the bottom of the smallest diameter steel pipe; the metal wire passes through the bottom of the smallest diameter steel pipe and is connected to the sampling unit.

[0017] In one possible design, the connecting unit includes a clamp bracket;

[0018] The clamp bracket includes an upper transverse clamp, a middle vertical clamp and a lower transverse clamp; the upper transverse clamp and the lower transverse clamp are arranged in parallel and the ends on the same side of the two are fixedly connected to the vertical clamp respectively;

[0019] The upper transverse clamp is fixedly connected to the bottom of the innermost steel pipe of the hollow telescopic structure; the lower transverse clamp is fixedly connected to the sampling unit.

[0020] In one possible design, both the upper transverse clamp and the lower transverse clamp are circular ring structures;

[0021] The upper transverse clamp is fixed to the bottom of the innermost steel pipe of the hollow telescopic structure by a first fastener; the lower transverse clamp is fixed to the sampling unit by a second fastener.

[0022] On the other hand, the present invention also provides a slurry sampling method, using the above-mentioned slurry sampling device; the slurry sampling method comprises the following steps:

[0023] Step 1: adjust the length of the hollow telescopic structure and the metal wire therein according to the sampling depth, and place the sampling device above the slurry barrel;

[0024] Step 2: Open the sampling unit through the movable handle and the metal wire and start sampling;

[0025] Step 3: close the sampling unit and stop sampling;

[0026] Step 4: Take out the sampling device from the slurry barrel and discharge the slurry sample from the sampling device.

[0027] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects:

[0028] (1) Compared with the prior art, the present invention can drive the connecting unit and the sampling unit to move up and down by setting a hollow telescopic structure, so as to take slurry samples of different depths; in addition, the present invention can control the sampling unit to start or end sampling by tightening or loosening the metal wire through the movable handle, and can achieve closed sampling by closing the sampling unit when the sampling is ended, which can ensure that the taken slurry is not contaminated by slurry at other depths, and provide accurate samples for slurry viscosity testing; in addition, the present invention adopts a retractable sampling device, which is easy to carry and place.

[0029] (2) The telescopic structure of the present invention is easy to carry and store.

[0030] (3) The present invention can prevent the movable cover from being completely separated from the sampling cylinder by providing a limiting boss on the sampling cylinder and a limiting screw on the movable cover, thereby ensuring that the liquid inlet hole can be closed in time after sampling is completed to stop liquid inlet.

[0031] In the present invention, the above-mentioned technical solutions can also be combined with each other to achieve more preferred combination solutions. Other features and advantages of the present invention will be described in the subsequent description, and some advantages can become obvious from the description, or can be understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained through the contents particularly pointed out in the embodiments of the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The drawings are only for the purpose of illustrating particular embodiments and are not to be considered limiting of the present invention. Like reference symbols denote like components throughout the drawings.

[0033] Figure 1 It is a schematic diagram of the structure of the slurry sampling device;

[0034] Figure 2 for Figure 1 Left side view;

[0035] Figure 3 It is a structural schematic diagram of the slurry sampling device in the initial sampling state;

[0036] Figure 4 This is a schematic diagram of the structure of the slurry sampling device during sampling.

[0037] Reference numerals:

[0038] 1- movable handle; 2- hollow telescopic structure; 3- steel wire; 4- clamp bracket; 5- steel wire lock; 6- movable cover; 7- sealing ring; 8- limiting screw; 9- sampling cylinder; 10- spring; 11- ball valve; 12- limiting boss. DETAILED DESCRIPTION

[0039] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of the present invention and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not used to limit the scope of the present invention.

[0040] On the one hand, the present invention provides a slurry sampling device, which includes a telescopic unit, a connecting unit and a sampling unit connected in sequence; wherein the connecting unit is used to connect and fix the hollow telescopic unit and the sampling unit; the telescopic unit includes a movable handle 1 and a hollow telescopic structure 2; a pin fulcrum is provided at the top of the hollow telescopic structure 2, and the movable handle 1 is fixed to the top of the hollow telescopic structure 2 through the pin fulcrum; the movable handle 1 includes a force-applying end and a connecting end, and the connecting end is provided in the hollow telescopic structure 2; a metal wire is provided in the hollow telescopic structure 2, one end of the metal wire is fixedly connected to the connecting end of the movable handle 1, and the other end passes through the bottom of the hollow telescopic structure 2 and is connected to the sampling unit; when sampling, the movable handle 1 is squeezed by hand, the metal wire is tightened, and the sampling unit is opened and sampling starts; the movable handle 1 is released, the metal wire is released, the sampling unit is closed and sampling stops.

[0041] Specifically, the two ends of the movable handle 1 of the present invention are respectively a force-applying end and a connecting end, and a fixed fulcrum is provided between the force-applying end and the connecting end; wherein the force-applying end is located outside the hollow telescopic structure 2, and the connecting end passes through the top of the hollow telescopic structure 2 and extends into it, and a pin fulcrum is provided on the top of the hollow telescopic structure 2, and the movable handle 1 is fixed to the pin fulcrum on the top of the hollow telescopic structure 2 through its fixed fulcrum, and the movable handle 1 can be opened and closed around the pin fulcrum; a mounting hole is provided on the connecting end of the movable handle 1, and one end of the metal wire in the cavity of the hollow telescopic structure 2 is fixed to the connecting end of the movable handle 1 through the mounting hole; and the other end It extends along the axial direction of the hollow telescopic structure 2 until it penetrates the bottom of the hollow telescopic structure 2 and then is connected to the sampling unit; one end of the connecting unit is connected to the hollow telescopic structure 2, and the other end is connected to the sampling unit, and the connecting unit is used to relatively fix the hollow telescopic structure 2 and the sampling unit; before sampling, the length of the hollow telescopic structure 2 and the length of the metal wire are adjusted according to the depth of the sampled slurry; when sampling, the movable handle 1 is squeezed by hand, the metal wire is tightened, the liquid inlet of the sampling unit is opened by the metal wire and sampling begins; after sampling, the movable handle 1 is released, the metal wire is released, the sampling unit is automatically closed and sampling stops.

[0042] Compared with the prior art, the present invention can drive the connecting unit and the sampling unit to move up and down by setting a hollow telescopic structure 2, so as to take slurry samples of different depths; in addition, the present invention can control the sampling unit to start or end sampling by tightening or loosening the metal wire through the movable handle 1, and closed sampling can be achieved by closing the sampling unit when the sampling is ended, which can ensure that the taken slurry is not contaminated by slurry at other depths, and provide accurate samples for slurry viscosity testing; furthermore, the present invention adopts a retractable sampling device, which is easy to carry and place.

[0043] It should be pointed out that the hollow telescopic structure 2 of the present invention is located directly above the sampling unit; when sampling, the lid of the slurry barrel is opened in advance, and the sampling device is manually held and inserted into the barrel without being fixed to the slurry barrel.

[0044] After the sampling is completed, in order to close the sampling unit in time, the sampling unit of the present invention includes a sampling cylinder 9; a movable cover 6 is provided on the top of the sampling cylinder 9; the outer top surface of the movable cover 6 is fixedly connected to one end of the metal wire; a first spring 10 hanging ring is provided on the inner bottom surface of the movable cover 6, and a second spring 10 hanging ring is provided on the inner bottom surface of the sampling cylinder 9; an elastic component is provided in the sampling cylinder 9, and the two ends of the elastic component are respectively connected to the first spring 10 hanging ring and the second spring 10 hanging ring.

[0045] Specifically, an elastic component (for example, a spring 10) is provided in the sampling cylinder 9 of the present invention, the upper end of the spring 10 is fixedly connected to the first spring 10 hanging ring, and the other end is fixedly connected to the second spring 10 hanging ring; when sampling, the movable handle 1 is squeezed, and the movable handle 1 begins to rotate around the pin fulcrum, and at the same time, the connecting end of the movable handle 1 begins to apply an upward pulling force to the steel wire 3, and at the same time, the other end of the steel wire 3 begins to apply an upward pulling force to the movable cover 6 until the movable cover 6 is opened, and the slurry enters the sampling cylinder. It should be noted that no matter whether the movable cover 6 is in an open state or a closed state, the spring 10 in the sampling cylinder is always in a stretched state. Due to the tension of the spring 10, after the sampling is completed, the movable cover 6 and the sampling cylinder 9 can be closed in time.

[0046] It should be noted that when sampling the slurry at the middle and lower layers of the slurry barrel, after the sampling is completed, as the sampling cylinder 9 is lifted out of the slurry barrel, since the movable cover 6 and the sampling cylinder 9 are in a closed state, the slurry in the upper layer will not enter the sampling cylinder 9. Therefore, the present invention can ensure that the sampled slurry is completely the slurry in the middle and lower layers and will not be mixed with the slurry in the upper layer. Therefore, the present invention can accurately measure the viscosity of the slurry in the middle and lower layers.

[0047] In summary, the present invention can perform closed sampling of slurries at different depths, ensure that the sampled slurry is not contaminated by slurries at other depths, and provide accurate samples for slurry viscosity testing.

[0048] In order to facilitate sampling, the movable cover 6 of the present invention includes a cover body and an annular side wall; the annular side wall is arranged on the outer edge of the cover body, and the two are integrally formed; a plurality of liquid inlet holes are arranged on the annular side wall.

[0049] Specifically, the movable cover 6 of the present invention includes a cover body and an annular side wall, which together constitute a covered bottomless cylindrical body, and a circle of liquid inlet holes is provided on the annular side wall, i.e., the barrel wall; when the movable cover 6 is covered on the sampling cylinder 9, the annular side wall is tightly attached to the outer wall of the sampling cylinder 9, and at this time, the liquid inlet hole cannot be filled with liquid; when the movable cover 6 is pulled up by the steel wire 3, and its annular side wall is out of contact with the sampling cylinder 9, the slurry in the slurry bucket can quickly enter the interior of the sampling cylinder 9 through the liquid inlet hole. After the sampling is completed, the movable cover 6 is covered on the sampling cylinder 9, and the liquid inlet hole is closed.

[0050] Compared with the prior art, the present invention can realize rapid liquid inflow of slurry and timely closing of the liquid inlet hole by arranging the liquid inlet hole on the annular side wall of the movable cover 6 .

[0051] In order to prevent the movable cover 6 from completely separating from the sampling cylinder 9, a circle of outward-turned limiting bosses 12 are provided at the upper end of the sampling cylinder 9 of the present invention; a plurality of limiting convex screw 8 mounting holes are provided on the annular side wall of the movable cover 6, and the limiting convex screw 8 mounting holes are arranged below the liquid inlet hole; a limiting convex screw 8 is provided in the limiting convex screw 8 mounting hole, and the limiting convex screw 8 is located below the limiting boss 12.

[0052] Specifically, the sampling cylinder 9 of the present invention is a cylindrical body with a bottom but no cover, and an outward-turned limiting boss 12 is arranged on the upper edge of the barrel wall of the sampling cylinder 9, and the limiting boss 12 is a circle of flange ring structure, and the limiting boss 12 is used to limit the movable cover 6 from being separated from the sampling cylinder 9; correspondingly, a circle of limiting convex screw 8 mounting holes is arranged on the annular side wall of the movable cover 6, and a limiting convex screw 8 is arranged in the limiting convex screw 8 mounting hole, and the setting position of the limiting convex screw 8 mounting hole is located below the liquid inlet hole; the limiting convex screw 8 can make the movable cover 6 reciprocate up and down along the outer wall of the sampling cylinder 9; when the movable cover 6 is pulled up by the steel wire 3 and is out of contact with the sampling cylinder 9, the liquid inlet hole on the annular side wall is no longer in contact with the outer wall of the sampling cylinder 9, that is, the liquid inlet hole is opened, and at the same time, the limiting convex screw 8 installed on the side of the movable cover 6 is limited by the outward-turned limiting boss 12 of the sampling cylinder 9, ensuring that the movable cover 6 will not be completely separated from the sampling cylinder 9.

[0053] Compared with the prior art, the present invention can prevent the movable cover 6 from being completely separated from the sampling cylinder 9 by providing a limiting boss 12 on the sampling cylinder 9 and a limiting convex screw 8 on the movable cover 6, thereby ensuring that the liquid inlet hole can be closed in time to stop liquid inlet after sampling is completed.

[0054] In order to achieve a firm connection between the steel wire 3 and the movable cover 6 , a steel wire 3 hanging ring is provided on the outer top surface of the cover body of the present invention, and the steel wire 3 hanging ring is fixedly connected to one end of the metal wire through a steel wire lock buckle 5 .

[0055] Specifically, one end of the steel wire 3 passing through the innermost part of the hollow telescopic structure 2 is connected to the steel wire 3 hanging ring on the top of the movable cover 6, and after the length of the steel wire 3 is adjusted, it is locked with the steel wire lock 5.

[0056] Compared with the prior art, the present invention provides a wire lock buckle 5, which can, on the one hand, achieve a firm connection between the steel wire 3 and the movable cover 6; on the other hand, when the length of the steel wire 3 needs to be adjusted, the length of the steel wire 3 can be adjusted by opening the wire lock buckle 5.

[0057] In order to be able to sample slurries at different depths, the hollow telescopic structure 2 of the present invention is a sleeve-type structure, and the hollow telescopic structure 2 is a combination of multiple steel pipes of different diameters; in the steel pipes, both ends of the largest diameter steel pipe are provided with internal threads, and both ends of the smallest diameter steel pipe are provided with external threads; both ends of the steel pipe between the maximum diameter and the minimum diameter are provided with external threads and internal threads; steel pipes of adjacent diameters are connected by internal threads or external threads at their ends; the pin fulcrum is provided at the top of the largest diameter steel pipe; the connecting unit is connected to the bottom of the smallest diameter steel pipe; the metal wire passes through the bottom of the smallest diameter steel pipe and is connected to the sampling unit.

[0058] Specifically, for steel pipes of adjacent diameters, the steel pipe with a smaller diameter can be inserted into the steel pipe with a larger diameter, and the two are fixed by threaded connection; when it is necessary to take the slurry in the lower layer of the slurry barrel, that is, when it is necessary to extend the steel pipe, first adjust the length of the steel wire 3, and then pull out multiple steel pipes, and screw the inner and outer threads of the adjacent steel pipes together and tighten them; when it is necessary to shorten, unscrew the threads of the adjacent steel pipes, insert them into each other, and then fix them with threads.

[0059] Compared with the prior art, the present invention arranges a plurality of steel pipes with different diameters, and can sample slurries at different depths through threaded connections of the steel pipes. Meanwhile, the length adjustment operation of the steel pipes is simple and easy to implement.

[0060] It should be noted that the hollow telescopic structure 2 of the present invention is located directly above the sampling cylinder 9, which facilitates the steel wire 3 to pass through the steel pipe and connect with the movable cover 6 along the axial direction of the steel pipe, so that the steel wire 3 can vertically pull up the movable cover 6 to avoid getting stuck.

[0061] In order to stably fix the hollow telescopic unit and the sampling unit, the connecting unit of the present invention includes a clamp bracket 5; the clamp bracket 5 includes an upper transverse clamp, a middle vertical clamp and a lower transverse clamp; the upper transverse clamp and the lower transverse clamp are arranged in parallel and the same side ends of the two are fixedly connected to the vertical clamp respectively; the upper transverse clamp is fixedly connected to the bottom of the innermost steel pipe of the hollow telescopic structure 2; the lower transverse clamp is fixedly connected to the sampling unit.

[0062] Compared with the prior art, the present invention utilizes the clamp bracket 5 to firmly fix the hollow telescopic structure 2 and the sampling unit, ensuring that the relative position between the two remains unchanged during sampling.

[0063] It should be pointed out that the upper transverse clamp and the lower transverse clamp of the present invention are both circular ring structures; the upper transverse clamp and the bottom of the innermost steel pipe of the hollow telescopic structure 2 are fixed by a first fastener; the lower transverse clamp and the sampling unit are fixed by a second fastener.

[0064] Specifically, the upper transverse clamp is fixedly connected to the steel pipe with the smallest diameter of the hollow telescopic structure 2 by screws; the lower transverse clamp is also fixedly connected to the sampling cylinder 9 by screws.

[0065] In order to further improve the sealing between the movable cover 6 and the sampling cylinder 9, a sealing ring 7 (for example, a rubber ring) is provided on the inner top surface of the movable cover 6 of the present invention. The sealing ring 7 follows the inner top surface of the movable cover 6 and the two are tightly attached. The sealing ring 7 is used to improve the sealing between the movable cover 6 and the sampling cylinder 9.

[0066] It should be noted that the slurry of the present invention is a room temperature slurry, and the sealing ring 7 is a silicone ring which will not pollute the slurry.

[0067] It should be pointed out that after the sampling is completed, in order to facilitate the discharge of the slurry from the sampling device, a ball valve 11 is provided at the bottom of the sampling cylinder 9 of the present invention.

[0068] On the other hand, the present invention further provides a slurry sampling method, using the above-mentioned slurry sampling device, the slurry sampling method comprises the following steps:

[0069] Step 1: adjust the length of the hollow telescopic structure 2 and the metal wire therein according to the sampling depth, and place the sampling device above the slurry barrel;

[0070] Step 2: Open the sampling unit through the movable handle 1 and the metal wire and start sampling;

[0071] Step 3: close the sampling unit and stop sampling;

[0072] Step 4: Take out the sampling device from the slurry barrel and discharge the slurry sample from the sampling device.

[0073] In the above step 1, when it is necessary to increase the length of the steel pipe combination, multiple steel pipes are pulled out according to the sampling depth, and the internal threads and / or external threads of the steel pipes of adjacent diameters are screwed together and tightened; when it is necessary to shorten the length of the steel pipe combination, the steel pipes of adjacent diameters are sleeved together as needed, and fixed to each other using the internal threads at both ends of the steel pipe with the largest diameter, the external threads at both ends of the steel pipe with the smallest diameter, and the internal threads and external threads at both ends of the steel pipe with the intermediate diameter.

[0074] In the above step 1, after adjusting the length of the steel wire 3, the end of the steel wire 3 away from the movable handle 1 is locked on the hanging ring of the steel wire 3 by using the steel wire lock buckle 5. Figure 1 and Figure 2 As shown; use the head of the handheld hollow telescopic structure 2 to extend the sampling device to the depth of the slurry taken from the slurry barrel.

[0075] In the above step 2, before sampling, Figure 3As shown, the movable cover 6 and the sampling cylinder 9 are stretched by the spring 10 and are in a closed and tight state.

[0076] In the above step 2, when sampling, if Figure 4 As shown, the movable handle 1 is pressed downward by hand, and the movable handle 1 rotates around the pin shaft fulcrum. Under the action of the lever, the connecting end of the movable handle 1 pulls the steel wire 3 upward, and the other end of the steel wire 3 pulls up the movable cover 6. The annular side wall of the movable cover 6 is out of contact with the sampling cylinder 9, and the slurry in the slurry barrel quickly enters the sampling cylinder 9 through the liquid inlet hole on the annular side wall.

[0077] In the above step 2, when the movable cover 6 moves to the uppermost end, the upper limit screw 8 installed on the annular side wall of the movable cover 6 is stuck by the limit boss 12 on the upper end of the sampling cylinder 9, thereby preventing the movable cover 6 from being separated from the sampling cylinder 9.

[0078] In the above step 2, when sampling, the user squeezes the movable handle 1 with his / her hand and waits for 5 to 10 seconds.

[0079] In the above step 3, after sampling is completed, the movable handle 1 is released, and the connecting end of the movable handle 1 no longer applies tension to the steel wire 3. At the same time, since the movable cover 6 is subjected to the tension of the spring 10 in the sampling cylinder 9, the movable cover 6 is tightly closed to the sampling cylinder 9, and the liquid inlet hole on the annular side wall is in a closed state.

[0080] In the above step 4, loosen the movable handle 1, hold the head of the hollow telescopic structure 2, and take out the sampling device from the slurry barrel; then, open the ball valve 11 and extract the slurry into the corresponding container. At this point, the slurry sampling is completed.

[0081] Compared with the prior art, the present invention can perform closed sampling of slurries at different depths and can ensure that the sampled slurries are not contaminated by slurries at other depths, thereby providing accurate samples for slurry viscosity testing.

[0082] Example 1

[0083] This embodiment adopts the above-mentioned slurry sampling device and sampling method to sample the slurry at the bottom of a slurry barrel with a depth of 1 meter. The specific process is as follows:

[0084] Step 1: adjust the length of the hollow telescopic structure 2 and the metal wire therein according to the sampling depth, and place the sampling device above the slurry barrel;

[0085] Specifically, the depth of the slurry barrel is 1m, and the length of the hollow telescopic structure 2 is adjusted to at least 1.2m according to the depth of the slurry barrel, and the length of the steel wire 3 is adjusted to at least 1.3m; after adjusting the length of the steel wire 3, the end of the steel wire 3 away from the movable handle 1 is locked on the hanging ring of the steel wire 3 by using the steel wire lock 5, such as Figure 1 and Figure 2 As shown; use the head of the handheld hollow telescopic structure 2 to extend the sampling device to the depth of the slurry taken from the slurry barrel.

[0086] Step 2: Open the sampling unit through the movable handle 1 and the metal wire and start sampling;

[0087] Specifically, before sampling, Figure 3 As shown, the movable cover 6 and the sampling cylinder 9 are stretched by the spring 10, and the two are in a closed and tight state; when sampling, as shown in FIG. Figure 4 As shown, the movable handle 1 is pressed downward by hand, and the movable handle 1 rotates around the pin fulcrum. Under the action of the lever, the connecting end of the movable handle 1 pulls the steel wire 3 upward, and the other end of the steel wire 3 pulls up the movable cover 6. The annular side wall of the movable cover 6 is out of contact with the sampling cylinder 9, and the slurry in the slurry bucket quickly enters the sampling cylinder 9 through the liquid inlet hole on the annular side wall. The movable handle 1 is pressed by hand and waits for 5s to 10s. When the movable cover 6 moves to the uppermost end, the upper limit convex screw 8 installed on the annular side wall of the movable cover 6 is stuck by the limit boss 12 on the upper end of the sampling cylinder 9, thereby preventing the movable cover 6 from being separated from the sampling cylinder 9.

[0088] Step 3: close the sampling unit and stop sampling;

[0089] Specifically, after sampling is completed, the movable handle 1 is released, and the connecting end of the movable handle 1 no longer applies tension to the steel wire 3. At the same time, since the movable cover 6 is subjected to the tension of the spring 10 in the sampling cylinder 9, the movable cover 6 is tightly closed to the sampling cylinder 9, and the liquid inlet hole on the annular side wall is in a closed state.

[0090] Step 4: Take out the sampling device from the slurry barrel and discharge the slurry sample from the sampling device.

[0091] In the above step 4, loosen the movable handle 1, hold the head of the hollow telescopic structure 2, and take out the sampling device from the slurry barrel; then, open the ball valve 11 and extract the slurry into the corresponding container. At this point, the slurry sampling is completed.

[0092] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by any technician familiar with the technical field within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention.

Claims

1. A slurry sampling device, characterized in that: It comprises a telescopic unit, a connecting unit and a sampling unit connected in sequence; the connecting unit is used to connect and fix the hollow telescopic unit and the sampling unit; The telescopic unit includes a movable handle and a hollow telescopic structure; a pin fulcrum is provided on the top of the hollow telescopic structure, and the movable handle is fixed to the top of the hollow telescopic structure through the pin fulcrum; the movable handle includes a force-applying end and a connecting end, and the connecting end is provided in the hollow telescopic structure; A metal wire is provided in the hollow telescopic structure, one end of the metal wire is fixedly connected to the connecting end, and the other end of the metal wire passes through the bottom of the hollow telescopic structure and is connected to the sampling unit; when sampling, the movable handle is squeezed by hand, the metal wire is tightened, the sampling unit is opened and sampling begins; the movable handle is released by hand, the metal wire is released, the sampling unit is closed and sampling stops.

2. The slurry sampling device according to claim 1, characterized in that: The sampling unit comprises a sampling cylinder; A movable cover is provided on the top of the sampling cylinder; the outer top surface of the movable cover is fixedly connected to one end of the metal wire; a first spring hanging ring is provided on the inner bottom surface of the movable cover, and a second spring hanging ring is provided on the inner bottom surface of the sampling cylinder; an elastic component is provided in the sampling cylinder, and both ends of the elastic component are respectively connected to the first spring hanging ring and the second spring hanging ring.

3. The slurry sampling device according to claim 2, characterized in that: The movable cover comprises a cover body and an annular side wall; the annular side wall is arranged on the outer edge of the cover body, and the two are integrally formed; and a plurality of liquid inlet holes are arranged on the annular side wall.

4. The slurry sampling device according to claim 3, characterized in that: The upper end of the sampling cylinder is provided with a circle of outward-turned limiting bosses; A plurality of limit screw mounting holes are arranged on the annular side wall of the movable cover body, and the limit screw mounting holes are arranged below the liquid inlet hole; a limit screw is arranged in the limit screw mounting hole, and the limit screw is located below the limit boss.

5. The slurry sampling device according to claim 4, characterized in that: A wire hanging ring is provided on the outer top surface of the cover body, and the wire hanging ring is fixedly connected to one end of the metal wire through a wire lock buckle.

6. The slurry sampling device according to claim 1, characterized in that: The hollow telescopic structure is a sleeve-type structure, and the hollow telescopic structure is a combination of multiple steel pipes with different diameters; in the steel pipes, both ends of the steel pipe with the largest diameter are provided with internal threads, and both ends of the steel pipe with the smallest diameter are provided with external threads; both ends of the steel pipe between the largest diameter and the smallest diameter are provided with external threads and internal threads; the steel pipes with adjacent diameters are connected by the internal threads or external threads at their ends.

7. The slurry sampling device according to claim 6, characterized in that: The pin fulcrum is arranged at the top of the steel pipe with the largest pipe diameter; the connecting unit is connected to the bottom of the steel pipe with the smallest pipe diameter; the metal wire passes through the bottom of the steel pipe with the smallest pipe diameter and is connected to the sampling unit.

8. The slurry sampling device according to claim 7, characterized in that: The connecting unit comprises a clamp bracket; The clamp bracket includes an upper transverse clamp, a middle vertical clamp and a lower transverse clamp; the upper transverse clamp and the lower transverse clamp are arranged in parallel and the ends on the same side of the two are fixedly connected to the vertical clamp respectively; The upper transverse clamp is fixedly connected to the bottom of the innermost steel pipe of the hollow telescopic structure; the lower transverse clamp is fixedly connected to the sampling unit.

9. The slurry sampling device according to claim 8, characterized in that: The upper transverse clamp and the lower transverse clamp are both circular ring structures; The upper transverse clamp is fixed to the bottom of the innermost steel pipe of the hollow telescopic structure by a first fastener; the lower transverse clamp is fixed to the sampling unit by a second fastener.

10. A slurry sampling method, characterized in that: The slurry sampling device according to any one of claims 1 to 9 is used; the slurry sampling method comprises the following steps: Step 1: adjust the length of the hollow telescopic structure and the metal wire therein according to the sampling depth, and place the sampling device above the slurry barrel; Step 2: Open the sampling unit through the movable handle and the metal wire and start sampling; Step 3: close the sampling unit and stop sampling; Step 4: Take out the sampling device from the slurry barrel and discharge the slurry sample from the sampling device.

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