Gypsum-based self-leveling mortar sampling system convenient to clean

Abstract

The utility model relates to a gypsum-based self-leveling mortar sampling system convenient to clean, which is characterized in that a rotating disc is rotationally assembled on a fixed disc, the rotating disc is in contact with the surface of the fixed disc and is in rotary sealing fit with the surface of the fixed disc, a material taking opening is formed in the fixed disc, a material taking pipe is communicated with the material taking opening, and the material taking pipe is used for being communicated and fixed on stirring equipment; a water inlet and an air inlet are formed in the positions, on the two sides of the material taking opening, of the fixed disc, a water pipe connector is connected to the water inlet and used for being connected with a water source through a water pipe, and an air pipe connector is connected to the air inlet and used for being connected with an air source through an air pipe. The rotating disc is provided with a communicating opening which is independently communicated with the material taking opening, the water inlet and the air inlet when the rotating disc rotates relative to the fixed disc, the communicating opening is provided with a pipe connector, and the pipe connector is connected with a material taking device through a material conveying pipe. During cleaning, the rotating disc rotates to sequentially communicate the material taking device with the water inlet and the air inlet, the material taking device and the material conveying pipe can be cleaned, and operation is easy.

Description

Technical Field

[0001] The utility model relates to a conveniently cleaned gypsum-based self-leveling mortar sampling system, which is used for extracting gypsum-based self-leveling mortar samples from gypsum-based self-leveling mortar mixing equipment, and the samples are used for fluidity testing. Background Art

[0002] Gypsum-based self-leveling mortar is a material specially used for indoor floor leveling, which is made by carefully configuring and evenly mixing high-strength gypsum, aggregates and various building chemical additives in the factory. Gypsum-based self-leveling mortar can achieve automatic leveling during the construction process, without the need for manual secondary leveling. It is easy to construct and has high flatness. The fluidity of gypsum-based self-leveling mortar is directly related to the construction quality. During the construction process, it is necessary to sample the mixed gypsum-based self-leveling mortar and conduct a fluidity test on the samples to obtain gypsum-based self-leveling mortar with fluidity that meets the requirements. This step is usually carried out in the laboratory. Gypsum with stable quality has stable fluidity under the experimental water-powder ratio. However, in the actual production process, some unstable factors may appear. For example, humidity fluctuations in gypsum production raw materials and temperature fluctuations in production steam will affect the moisture content of gypsum when it leaves the factory, which in turn affects the fluidity of gypsum-based self-leveling mortar under the experimental water-powder ratio, causing engineering problems. Although there is closed-loop control in the gypsum production process, it takes a certain amount of time to monitor and respond to unstable factors in the production process. During this period, a batch of unstable gypsum powder will appear. In order to obtain the actual water-powder ratio and obtain gypsum-based self-leveling mortar with stable quality, it is necessary to test the fluidity of gypsum-based self-leveling mortar on site in actual projects.

[0003] In order to test the fluidity of gypsum-based self-leveling mortar on site, the Chinese patent specification with application number: 202311234352.9 discloses a gypsum-based self-leveling mortar mixing device with a fluidity testing device. The mixing device is provided with a material taking point, and the material taking point is connected to the sample feeding device through a pipeline. The sample feeding device draws materials from the material taking point, and the materials flow into the fluidity test mold cylinder. The fluidity test is carried out on site. When the water-powder ratio is not the same as the experimental water-powder ratio, the accurate water-powder ratio cannot be obtained in one test, and repeated debugging and testing are required. However, after one test, the pipeline and the sample feeding device will be filled with the materials of the last test, and it takes a while to empty them. It also needs to be emptied manually, which is cumbersome and affects the customer's experience. In addition, after the test, the materials in the pipeline and the sample feeding device cannot be discharged. After a period of time, the materials will solidify and clog and cannot be used again. If they need to be cleaned, they need to be manually disassembled for cleaning, and the material taking point needs to be blocked to prevent material leakage, which is cumbersome. Utility Model Content

[0004] The purpose of the utility model is to provide a gypsum-based self-leveling mortar sampling system that is easy to clean, so as to solve the problem that the gypsum-based self-leveling mortar sampling device in the prior art needs to be manually emptied when used again, which is cumbersome to operate and affects the customer's usage experience.

[0005] In order to solve the above problems, the sampling system of gypsum-based self-leveling mortar which is easy to clean is provided by the utility model, and adopts the following technical scheme: a sampling system of gypsum-based self-leveling mortar which is easy to clean, comprises a fixed plate, a rotating plate is rotatably mounted on the fixed plate, the rotating plate contacts with the fixed plate surface and rotates and seals, a feeding port is provided on the fixed plate, a feeding pipe is connected to the feeding port, the feeding pipe is used to be connected and fixed on the mixing equipment, a water inlet and an air inlet are provided on both sides of the feeding port on the fixed plate, a water pipe joint is connected to the water inlet, the water pipe joint is used to be connected to a water source through a water pipe, an air pipe joint is connected to the air inlet, the air pipe joint is used to be connected to an air source through an air pipe, and the rotating plate is provided with a feeding port, the water inlet and the air inlet are connected to the ... A connecting port that is independently connected to the air port is provided with a pipe joint, which is connected to the feeder through the feed pipe. The feeder includes an outer cylinder, both ends of the outer cylinder are sealed with sealing plates, a feed port is provided on one sealing plate, the feed port is connected to the corresponding end of the feed pipe, and a discharge port is provided on the other sealing plate. A piston is slidably assembled in the outer cylinder, a piston rod extending from the sealing plate of the discharge port is provided on one end surface of the piston, a sliding sleeve is provided on the outer sliding sealing sleeve of the piston rod, a flexible plate is fixedly provided on the inner end of the sliding sleeve, the flexible plate is attached to or away from the piston during the sliding process of the sliding sleeve, the outer end sliding seal of the sliding sleeve extends out of the corresponding sealing plate, a positioning structure is provided between the sliding sleeve and the piston rod for keeping the sliding sleeve and the piston rod moving together after the flexible plate and the piston are attached or separated, and through holes are provided on the outer edge of the piston.

[0006] The rotating disk is assembled with the fixed disk concentrically through the flange provided on the fixed disk, the flange is connected to the outer edge of the fixed disk through a cylindrical connecting part, and the rotating disk is assembled with the fixed disk through the cooperation with the cylindrical connecting part.

[0007] The rotational power of the rotating disk relative to the fixed disk comes from the rotating motor.

[0008] The rotating motor is fixed on the fixed disk, and the output shaft of the rotating motor passes through a through hole provided on the fixed disk and is assembled with the rotating disk to prevent rotation.

[0009] The positioning structure is an elastic card arranged on the piston rod, one end of the elastic card is integrally arranged on the piston rod, and the other end is freely suspended. An opening is provided on the sliding sleeve, and a protrusion that can be inserted into the opening is convexly provided on the elastic card. A receiving groove for the elastic card to be elastically pressed into is provided on the piston rod, and the protrusion is pressed against the port of the sliding sleeve after being released from the sliding sleeve.

[0010] The flexible plate is fixed to the sliding sleeve through a shaft ring arranged on the inner end of the sliding sleeve, the flexible plate presses the shaft ring, and a positioning nut is fixed on the sliding sleeve to press the flexible plate onto the shaft ring.

[0011] The piston is provided with a recess for accommodating the shaft ring.

[0012] The edge of the flexible plate is provided with a reinforcement ring.

[0013] The reinforcing ring is located on a side of the flexible plate away from the piston.

[0014] The sliding sleeve is matched with the piston rod to prevent rotation.

[0015] The sealing plates at both ends of the outer cylinder of the sampler of the utility model are respectively provided with a feed port and a discharge port, a sliding sleeve is provided on the outer sliding sealing sleeve of the piston rod, a flexible plate is fixedly provided at the inner end of the sliding sleeve, the flexible plate is attached to the piston or away from the piston during the sliding process of the sliding sleeve, the outer end sliding seal of the sliding sleeve extends out of the corresponding sealing plate, a positioning structure is provided between the sliding sleeve and the piston rod to keep the sliding sleeve and the piston rod moving together after the flexible plate and the piston are attached or separated, and a through hole is arranged on the outer edge of the piston. The sliding sleeve is pulled outward to make the flexible plate away from the piston, and then water is injected into the inner part of the outer cylinder from the feed port, the flexible plate is deformed by the water, and clean water can flow through the gap between the deformed flexible plate and the outer cylinder and flow out from the discharge port. In this process, the piston rod can also be pushed and pulled, and the entire sampler will be cleaned. In addition, the fixed disk and the rotating disk are assembled, and the feeding pipe on the fixed disk is connected and fixed on the stirring equipment. The water inlet and the air inlet are connected to the water source and the air source respectively. The connecting port of the rotating disk can connect the inlet of the feeder to the feeding port, the water inlet and the air inlet. When feeding, it is connected to the feeding port to take materials and conduct fluidity test. After the feeding is completed, the rotating disk is rotated to connect the feeder with the water inlet, and the cleaning mode is turned on. After the cleaning is completed, the feeder is connected with the air inlet, and the clean water is discharged through the gas. After the inside of the feeder is blown dry, the next feeding can be carried out. After the test is completed, the feeder can also be cleaned without manual disassembly and cleaning. The operation is simple and the customer experience is good.

[0016] The utility model discloses a rotating disk which is assembled with a fixed disk in a coaxial rotation through a flange arranged on the fixed disk; the flange is connected to the outer edge of the fixed disk through a cylindrical connecting portion; the rotating disk is assembled with the fixed disk in a rotation by cooperating with the cylindrical connecting portion; the structure is compact and the movement is reliable.

[0017] The utility model discloses a sampling system for gypsum-based self-leveling mortar which is easy to clean. Its positioning structure is composed of an elastic card arranged on a piston rod and an opening provided on a sliding sleeve. The sliding sleeve is pushed and pulled so that the protrusion on the elastic card is inserted into the opening provided on the sliding sleeve or comes out of the sliding sleeve and presses against the port of the sliding sleeve, so that the flexible plate can be fitted in the piston or separated from the piston.

[0018] The utility model discloses a conveniently cleanable sampling system for gypsum-based self-leveling mortar, wherein a recess for accommodating a shaft ring for fixing a flexible plate is arranged on the piston, and the recess can make the flexible plate and the piston fit more closely after the protrusion on the elastic card is clamped into the opening of the sliding sleeve.

[0019] The utility model discloses a sampling system for gypsum-based self-leveling mortar which is easy to clean. The edge of the flexible plate is provided with a reinforcing ring, and the reinforcing ring can increase the strength of the flexible plate, so that the flexible plate can be more closely fitted on the piston.

[0020] The utility model discloses a conveniently cleanable sampling system for gypsum-based self-leveling mortar, wherein the sliding sleeve cooperates with the piston rod to prevent rotation, so that the sliding sleeve can only slide along the axial direction of the piston rod, thereby ensuring that the protrusion on the elastic card is accurately inserted into the opening provided on the sliding sleeve. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solution of the embodiment of the utility model, the following is a brief introduction to the drawings required for use in the embodiment:

[0022] Figure 1 A three-dimensional diagram of an embodiment of the utility model;

[0023] Figure 2 Based Figure 1 A three-dimensional view of the middle and outer cylinders;

[0024] Figure 3 for Figure 1 A three-dimensional view of the sliding sleeve in FIG.

[0025] Figure 4 for Figure 1 A schematic diagram of a three-dimensional structure in which the flexible plate is fixed on the sliding sleeve;

[0026] Figure 5 for Figure 1 A schematic diagram of the three-dimensional structure of the piston and the piston rod;

[0027] Figure 6 for Figure 1 Schematic diagram of the three-dimensional structure of the flexible plate attached to the piston;

[0028] Figure 7 for Figure 1 Schematic diagram of the three-dimensional structure in which the flexible plate and the piston are separated;

[0029] Figure 8 It is an assembly diagram of the fixed disk and the rotating disk of the embodiment of the utility model;

[0030] Fig. 9 for Figure 8 AA section view;

[0031] Fig.10 It is a three-dimensional assembly diagram of the fixed disk and the rotating disk in one direction of the embodiment of the utility model;

[0032] Fig.11 It is a three-dimensional assembly diagram of the fixed disk and the rotating disk in another direction of the embodiment of the utility model;

[0033] Fig.12 for Figure 8 A schematic diagram of the three-dimensional structure of the middle fixed plate;

[0034] Fig.13 for Figure 8 Schematic diagram of the three-dimensional structure of the rotating disk.

[0035] Markings in the figure: 1. outer cylinder, 2. sealing plate, 3. feed pipe joint, 4. discharge port, 5. piston, 6. piston rod, 7. sliding sleeve, 8. flexible plate, 9. through hole, 10. elastic card, 11. opening, 12. protrusion, 13. receiving groove, 14. shaft ring, 15. positioning nut, 16. recess, 17. reinforcement ring, 18. material pipe, 19. hand-pull shaft ring, 20. fixed disk, 21. rotating disk, 22. feeding port, 23. feeding pipe, 24. air inlet, 25. air pipe joint, 26. water inlet, 27. water pipe joint, 28. rotating motor, 29. connecting port, 30. pipe joint. DETAILED DESCRIPTION

[0036] In order to make the technical purpose, technical solution and beneficial effects of the utility model clearer, the technical solution of the utility model is further described below in conjunction with the drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model and are not used to limit the utility model, that is, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. The components of the embodiments of the utility model described and shown in the drawings can be arranged and designed in various different configurations.

[0037] The specific embodiment of the sampling system for gypsum-based self-leveling mortar that is easy to clean is provided in the present invention. Figure 8-Figure 13In the embodiment, the fixed disk 20 is provided with a flange at the edge of the fixed disk 20, which is a sheet-shaped ring and parallel to the fixed disk. The flange is connected to the fixed disk 20 at the edge through a cylindrical connection portion. The rotating disk 21 is in surface contact with the fixed disk 20 and rotates in a sealed manner. The circumference of the rotating disk 21 cooperates with the inner surface of the cylindrical connection portion to achieve concentric rotation assembly of the rotating disk 21 and the fixed disk 20. The rotational power of the rotating disk 21 relative to the fixed disk 20 comes from the rotating motor 28. The rotating motor 28 is fixed on the fixed disk 20. The output shaft of the rotating motor 28 passes through the through hole provided on the fixed disk 20 and is assembled with the rotating disk 21. The rotating motor is a commercially available part. The output shaft of the rotating motor is assembled with the rotating disk 21 through a transmission key, which is a conventional assembly method.

[0038] A feeding port 22 is provided on the fixed disk 20, and a feeding pipe 23 is connected to the feeding port 22. The feeding pipe 23 is used to be connected and fixed on the stirring device and connected to the material hopper of the stirring device. The fixing here is welded. A hole is dug on the material hopper, and the feeding pipe is aligned with the hole and welded at the edge. This is a conventional fixing method. The material in the material hopper can enter the feeding pipe 23. A water inlet 26 and an air inlet 24 are provided on both sides of the feeding port 22 on the fixed disk 20. A water pipe joint 27 is connected to the water inlet 26. The water pipe joint 27 is used to connect to a water source through a water pipe. An air pipe joint 25 is connected to the air inlet 24. The air pipe joint 25 is used to connect to an air source through an air pipe. A connecting port 29 is provided on the rotating disk 21. A pipe joint 30 is provided on the connecting port 29. The pipe joint 30 is connected to the feeding device through a feeding pipe. When the rotating disk 21 rotates relative to the fixed disk 20 , the communication port 29 can be separately communicated with the material taking port 22 , the water inlet 26 and the air inlet 24 .

[0039] The rotating disk in this embodiment is assembled with the fixed disk through the flange provided on the fixed disk to rotate concentrically. In other embodiments, the flange can be provided on the rotating disk, or an assembly cylinder can be provided separately, the fixed disk is fixed to the assembly cylinder, and the rotating disk is assembled with the assembly cylinder.

[0040] The rotational power of the rotating disk relative to the fixed disk in this embodiment comes from the rotating motor. In other embodiments, other rotating driving devices, such as a rotating motor, may also be used.

[0041] The sealing between the rotating disk and the fixed disk in this embodiment is mainly achieved by roughness. Since the concentration of the gypsum-based self-leveling mortar is relatively high, it is not easy to enter the gap between the rotating disk and the fixed disk, and it is very easy to seal. As for clean water, the water source is only turned on when cleaning, and even if there is a slight leakage, it will not affect the experimental results. The same is true for gas. Therefore, the sealing requirements between the rotating disk and the fixed disk are not high.

[0042] Easy-to-clean sampling system for gypsum-based self-leveling mortar. Figure 1-Figure 8 In the embodiment, sealing plates 2 are provided at both ends of the outer cylinder 1, and the two sealing plates 2 isolate the inner cavity of the outer cylinder 1 from the outside; a feed port is provided on one of the sealing plates 2, and a feed pipe joint 3 is provided on the feed port; a discharge port 4 is provided on the other sealing plate 2. When sampling, the gypsum-based self-leveling mortar taking pipe 23 to be sampled enters the inner part of the outer cylinder 1 through the feed port, and the obtained gypsum-based self-leveling mortar sample enters the fluidity test mold cylinder from the discharge port 4. A piston 5 is slidably mounted in the outer cylinder 1, and the piston 5 A piston rod 6 extending from a sealing plate 2 of a discharge port 4 is provided on one end face, and the piston 5, the piston rod 6 and the outer tube 1 form a conventional structure similar to an injector, and a sliding sealing sleeve is provided on the outer side of the piston rod 6, and a flexible plate 8 is fixedly provided on the inner end of the sliding sleeve 7, and the flexible plate 8 is attached to or away from the piston 5 during the sliding process of the sliding sleeve 7. When the flexible plate 8 is attached to the piston 5, the two together form a conventional piston structure; the outer end sliding seal of the sliding sleeve 7 extends out of the corresponding sealing plate 2, and a positioning structure is provided between the sliding sleeve 7 and the piston rod 6 for keeping the sliding sleeve 7 and the piston rod 6 moving together after the flexible plate 8 is attached to or separated from the piston 5, and the positioning structure is an elastic card 10 provided on the piston rod 6 and an opening 11 provided on the sliding sleeve 7, and a protrusion 12 that can be inserted into the opening 11 is convexly provided on the elastic card 10, one end of the elastic card 10 is integrally provided on the piston rod 6, and the other end is freely suspended, and a receiving groove 13 for elastically pressing the elastic card 10 is provided on the piston rod 6 After the protrusion 12 escapes from the sliding sleeve 7, it is pressed against the port of the sliding sleeve 7. When the protrusion 12 on the elastic card 10 is inserted into the opening 11, the flexible plate 8 is separated from the piston 5. When the protrusion 12 on the elastic card 10 is pressed against the port of the sliding sleeve 7, the flexible plate 8 is fitted with the piston 5. The outer edge of the piston 5 is provided with a through hole 9. When the flexible plate 8 is fitted with the piston 5, the through hole 9 is blocked by the flexible plate 8. When the flexible plate 8 is separated from the piston 5, the through hole 9 is in a free state and can allow air or liquid to flow.

[0043] When using the sampling device to extract gypsum-based self-leveling mortar, first adjust the sliding sleeve 7 so that the protrusion 12 on the elastic card 10 is pressed against the port of the sliding sleeve 7. At this time, the flexible plate 8 fits the piston 5, and the through hole 9 on the piston 5 is blocked by the flexible plate 8. The flexible plate 8 and the piston 5 together constitute a piston in the conventional sense; then connect the feed port and the connecting port of the rotating disk, and pull the piston rod 6 outward. The so-called outside refers to the side where the piston rod 6 extends out of the discharge port 4. On the contrary, the side opposite to it is the inside. At this time, the atmospheric pressure in the cavity between the piston 5 and the feed port of the outer cylinder 1 becomes smaller, and the gypsum-based self-leveling mortar flows to the feed port under the action of atmospheric pressure, and then flows into the outer cylinder 1; moreover, at this time, the atmospheric pressure in the cavity between the piston 5 and the feed port of the outer cylinder 1 becomes smaller, and the flexible plate 8 is pressed tightly against the piston 5, and the through hole is firmly blocked. After the outer cylinder 1 is filled with slurry, the piston rod 6 is pushed inward. At this time, the flexible plate 8 is pressed in the opposite direction by the slurry and deformed, and cannot fit on the piston 5. The through hole 9 on the piston 5 is in a free state because it is not blocked by the flexible plate 8. The slurry flows from the through hole 9 into the cavity between the piston 5 and the discharge port 4. When the piston rod 6 is pushed to the end, the cavity between the piston 5 and the discharge port 4 is in the maximum state and is filled with slurry. Then the piston rod 6 is pulled outward again. At this time, the flexible plate 8 fits with the piston 5 again due to being squeezed by the slurry. The through hole 9 on the piston 5 is blocked by the flexible plate 8 again. The flexible plate 8 and the piston 5 still constitute a piston in the conventional sense. The slurry is squeezed out from the discharge port 4 and then flows into the fluidity test mold cylinder for fluidity test mold test. After sampling, press the elastic card 10 into the receiving groove 13 and adjust the sliding sleeve 7 so that the protrusion 12 on the elastic card 10 is inserted into the opening 11. At this time, the flexible plate 8 is separated from the piston 5, and the through hole 9 on the piston 5 is in a free state; the rotating disk 21 rotates, the connecting port is connected with the water inlet, and clean water flows into the outer tube 1 from the feed inlet. The flexible plate 8 is deformed by the water, and the water can flow from the gap between the deformed flexible plate 8 and the outer tube 1 to the discharge port, while pushing and pulling the piston rod. The piston and the flexible plate move back and forth in the water, and the slurry on both will be washed away. Continuing to feed water will completely flush the slurry out of the discharge port. Then, the rotating disk 21 continues to rotate, the connecting port is connected with the air inlet, and the water in the feed pipe and the feeder is squeezed out and blown dry by the gas. It is not necessary to blow it completely dry here.

[0044] Specifically, the flexible board 8 is fixed to the sliding sleeve 7 through a collar 14 provided on the inner end of the sliding sleeve 7, the flexible board 8 is pressed against the collar 14, and a positioning nut 15 for pressing the flexible board 8 against the collar 14 is fixed on the sliding sleeve 7. In other words, the collar 14 and the positioning nut 15 fix the flexible board 8 to the inner end of the sliding sleeve 7.

[0045] Specifically, the piston 5 is provided with a recess 16 for accommodating the collar 14. After the protrusion 12 on the elastic card 10 is inserted into the opening 11 of the sliding sleeve 7, the flexible plate 8 is close to the piston 5, but the collar 14 is between the flexible plate 8 and the piston 5, so that the two are not closely attached. After the collar 14 at the inner end of the piston rod 6 is inserted into the recess 16 on the piston 5, the flexible plate 8 can be closely attached to the piston 5.

[0046] Specifically, the edge of the flexible board 8 has a reinforcement ring 17 . The reinforcement ring 17 is used to increase the strength of the flexible board 8 .

[0047] Specifically, the reinforcing ring 17 is located on the side of the flexible plate 8 away from the piston 5. In this way, when the flexible plate 8 and the piston 5 are fitted together, the two can fit more closely.

[0048] Specifically, a material pipe 18 is provided in communication with the material outlet 4. When sampling, the material pipe 18 can allow the slurry to flow; when cleaning, the material pipe 18 can allow the cleaning water to flow out.

[0049] Specifically, a hand-pull collar 19 is provided on the outer end of the piston rod 6. The hand-pull collar 19 can increase the force-bearing area of ​​the piston rod 6, making it more labor-saving to push and pull the piston rod 6.

[0050] Specifically, the sliding sleeve 7 is anti-rotationally matched with the piston rod 6. This anti-rotationally matched structure enables the sliding sleeve 7 to slide only along the axial direction of the piston rod 6, but not radially, and can ensure that the protrusion 12 on the elastic card 10 is accurately inserted into the opening 11 on the sliding sleeve 7 when needed to prevent the two from being misaligned.

[0051] Specifically, the sliding sleeve 7 cooperates with the piston rod 6 to prevent rotation through a sliding bar (not shown in the figure) arranged on its inner wall. An axially extending sliding groove (not shown in the figure) is provided on the piston rod 6. The sliding bar and the sliding groove are slidably cooperated. This is a commonly used anti-rotation structure and will not be described in detail here.

[0052] In the above embodiment, the positioning structure for keeping the sliding sleeve and the piston rod moving together after the flexible plate and the piston are fitted or separated is a protruding elastic card provided on the piston rod and an opening provided on the sliding sleeve. In other embodiments, the protruding elastic card and the opening on the sliding sleeve may not be provided, but a threaded structure may be provided between the sliding sleeve and the piston rod, such as mutually matching threads are provided on the inner wall of the sliding sleeve and the outer wall of the piston rod, respectively. When the sliding sleeve rotates inwardly relative to the piston rod, the flexible plate and the piston are fitted; when the sliding sleeve rotates outwardly relative to the piston rod, the flexible plate and the piston are separated. Other forms of elastic positioning structures are also possible, such as positioning between an elastically retractable positioning ball and a positioning hole.

[0053] The flexible board in the above embodiment is fixed to the sliding sleeve by a specific fixing structure, and in other embodiments, it can be fixed by any other fixing structure.

[0054] The piston in the above embodiment is provided with a recess for accommodating the collar, which can ensure that the flexible board can be attached to the piston. In other embodiments, the shape of the flexible board can also be changed to ensure that it is attached to the piston. For example, a recess for accommodating the collar is provided in the center of the flexible board.

[0055] The edge of the flexible plate in the above embodiment has a reinforcement ring, which can maintain the shape of the flexible plate so that it will not warp or deform, ensuring that it can be reliably attached to the piston during operation. In other embodiments, when the rigidity of the flexible plate is sufficient, the reinforcement ring may not be provided.

[0056] The discharge port in the above-mentioned embodiment is connected with a material pipe, which may also be provided separately in other embodiments during use.

[0057] The sliding sleeve and the piston rod in the above embodiment cooperate to prevent rotation, which can ensure that the elastic card corresponds to the opening position of the sliding sleeve. In other embodiments, it may not be provided, and when in use, it only needs to be rotated and aligned.

[0058] In the above embodiment, a hand-pull collar is provided on the outer end of the piston rod. In other embodiments, the hand-pull collar may not be provided, but a hand-pull horizontal handle perpendicular to the piston rod may be provided on the outer end of the piston rod.

[0059] Finally, it should be noted that the above embodiments are only used to illustrate but not to limit the technical solutions of the present invention, and any equivalent substitutions of the present invention and any modifications or partial substitutions that do not depart from the spirit and scope of the present invention shall be included in the scope of protection of the claims of the present invention.

Claims

1. A conveniently cleanable sampling system for gypsum-based self-leveling mortar, characterized in that: The invention comprises a fixed disk, on which a rotating disk is rotatably mounted, the rotating disk contacts with the fixed disk surface and rotates and seals, a feeding port is provided on the fixed disk, a feeding pipe is connected to the feeding port, the feeding pipe is used to be connected and fixed on the stirring device, a water inlet and an air inlet are provided on both sides of the feeding port on the fixed disk, a water pipe joint is connected to the water inlet, the water pipe joint is used to be connected to a water source through a water pipe, an air pipe joint is connected to the air inlet, the air pipe joint is used to be connected to an air source through an air pipe, a connecting port is provided on the rotating disk, and is separately connected with the feeding port, the water inlet and the air inlet when the rotating disk rotates relative to the fixed disk, a pipe joint is provided on the connecting port, and the pipe joint is connected to the feeding port through a feeding pipe The feeder is connected to the device, the feeder includes an outer cylinder, both ends of the outer cylinder are sealed with sealing plates, a feeding port is arranged on one sealing plate, the feeding port is connected to the corresponding end of the feeding pipe, a discharging port is opened on the other sealing plate, a piston is slidably assembled in the outer cylinder, a piston rod extending from the sealing plate of the discharging port is arranged on one end surface of the piston, a sliding sleeve is arranged on the outer sliding sealing sleeve of the piston rod, a flexible plate is fixedly arranged on the inner end of the sliding sleeve, the flexible plate is attached to or away from the piston during the sliding process of the sliding sleeve, the outer end sliding seal of the sliding sleeve extends out of the corresponding sealing plate, a positioning structure is arranged between the sliding sleeve and the piston rod for keeping the sliding sleeve and the piston rod moving together after the flexible plate is attached to or separated from the piston, and through holes are arranged on the outer edge of the piston.

2. The sampling system for gypsum-based self-leveling mortar that is easy to clean according to claim 1 is characterized in that: The rotating disk is assembled with the fixed disk concentrically through the flange provided on the fixed disk, the flange is connected to the outer edge of the fixed disk through a cylindrical connecting part, and the rotating disk is assembled with the fixed disk through the cooperation with the cylindrical connecting part.

3. The sampling system for gypsum-based self-leveling mortar that is easy to clean according to claim 2 is characterized in that: The rotational power of the rotating disk relative to the fixed disk comes from the rotating motor.

4. The sampling system for gypsum-based self-leveling mortar that is easy to clean according to claim 3 is characterized in that: The rotating motor is fixed on the fixed disk, and the output shaft of the rotating motor passes through a through hole provided on the fixed disk and is assembled with the rotating disk to prevent rotation.

5. The sampling system for the easy-to-clean gypsum-based self-leveling mortar according to any one of claims 1 to 4, characterized in that: The positioning structure is an elastic card arranged on the piston rod, one end of the elastic card is integrally arranged on the piston rod, and the other end is freely suspended. An opening is provided on the sliding sleeve, and a protrusion that can be inserted into the opening is convexly provided on the elastic card. A receiving groove for the elastic card to be elastically pressed into is provided on the piston rod, and the protrusion is pressed against the port of the sliding sleeve after being released from the sliding sleeve.

6. The sampling system for the easy-to-clean gypsum-based self-leveling mortar according to claim 5, characterized in that: The flexible plate is fixed to the sliding sleeve through a shaft ring arranged on the inner end of the sliding sleeve, the flexible plate presses the shaft ring, and a positioning nut is fixed on the sliding sleeve to press the flexible plate onto the shaft ring.

7. The sampling system for gypsum-based self-leveling mortar that is easy to clean according to claim 6 is characterized in that: The piston is provided with a recess for accommodating the shaft ring.

8. The sampling system for gypsum-based self-leveling mortar that is easy to clean according to claim 7, characterized in that: The edge of the flexible plate is provided with a reinforcement ring.

9. The sampling system for gypsum-based self-leveling mortar that is easy to clean according to claim 8, characterized in that: The reinforcing ring is located on a side of the flexible plate away from the piston.

10. The sampling system for gypsum-based self-leveling mortar that is easy to clean according to claim 1, characterized in that: The sliding sleeve is matched with the piston rod to prevent rotation.

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