Cement raw material sampling device

Abstract

The utility model provides a cement raw material sampling device, and relates to the technical field of sampling devices, the cement raw material sampling device comprises a sampling pipe, an extension pipe, an air draft assembly and a loading assembly, one end of the extension pipe is slidably sleeved with the sampling pipe, and a first telescopic assembly is arranged between the sampling pipe and the extension pipe; according to the device, by arranging the extension pipe and the first telescopic assembly, the overall length of the sampling pipe can be adjusted according to actual use requirements, so that the sampling requirements of different depths are met, and the applicability of the device is improved; according to the device, by arranging a connecting pipe and a second telescopic assembly, it can be guaranteed that cement raw materials all fall into a charging bottle during sampling, scattering is prevented, the use stability is improved, and movement of the charging bottle is not affected; according to the device, by arranging the loading assembly and the shifting assembly, loading bottles can be conveniently and rapidly replaced, so that the sampling requirements of different sample types are met, the use convenience is improved, and the sampling efficiency is improved.

Description

Technical Field

[0001] The present application relates to the technical field of sampling devices, and in particular to a cement raw material sampling device. Background Art

[0002] The material that is ground to a certain fineness by mixing lime raw materials, clay raw materials and a small amount of correction raw materials in proportion is called cement raw meal. In the cement production process, a sampling device is needed to sample and test the cement raw meal to ensure the stability of the quality of the cement finished product. The existing sampling devices are usually of fixed length. When it is necessary to sample cement raw meal at different depths inside the equipment, sampling tubes of different lengths must be replaced, which is cumbersome to operate. In addition, the existing sampling devices are usually equipped with only one loading bottle. When multiple samples need to be taken, different loading bottles must be disassembled and replaced, which is inconvenient to use and has poor sampling efficiency. Summary of the invention

[0003] The purpose of the embodiments of the present application is to provide a cement raw meal sampling device, which can solve the technical problems that the existing sampling devices are usually of fixed length. When it is necessary to sample cement raw meal at different depths inside the equipment, sampling tubes of different lengths must be replaced, which is cumbersome to operate. In addition, the existing sampling devices are usually only equipped with one loading bottle. When multiple samples need to be taken, different loading bottles must be disassembled and replaced, which is inconvenient to use and has poor sampling efficiency.

[0004] The embodiment of the present application provides a cement raw material sampling device, comprising a sampling tube, an extension tube, an exhaust assembly and a loading assembly, wherein one end of the extension tube is slidably sleeved in the sampling tube, and a first telescopic assembly is arranged between the sampling tube and the extension tube;

[0005] The exhaust assembly includes a first installation chamber, an exhaust fan, a feed pipe, a discharge pipe and a connecting pipe. The first installation chamber is fixedly arranged at the lower end of the sampling tube. The exhaust fan is fixedly arranged in the first installation chamber. The air inlet end of the exhaust fan is connected with the sampling tube through the feed pipe, and the air outlet end of the exhaust fan is connected with the discharge pipe. The discharge pipe extends outside the first installation chamber. The connecting pipe is slidably sleeved on the discharge pipe. A second telescopic assembly is arranged between the first installation chamber and the connecting pipe.

[0006] The loading assembly includes a mounting frame, a connecting rod, a mounting plate and at least two loading bottles. The mounting frame is fixedly arranged below the first mounting chamber through the connecting rod, the mounting plate is slidably arranged on the mounting frame, the loading bottles are arranged on the mounting plate, and a shifting assembly is arranged between the mounting frame and the mounting plate.

[0007] Among them, the first telescopic assembly includes a second installation chamber, a motor, a first gear, a second gear and a first rack. The second installation chamber is fixedly arranged at the outer end of the sampling tube. The first gear and the second gear are both rotatably arranged in the second installation chamber through bearings. The motor drives the first gear to rotate, and the second gear is meshed with the first gear. The first rack is fixedly arranged at the outer end of the extension tube, and the second gear extends into the sampling tube and is meshed with the first rack.

[0008] Among them, the second telescopic assembly includes a mounting frame, a third gear, a second rack, a rotating shaft and a first handle, the mounting frame is fixedly arranged at the outer end of the first mounting chamber, the rotating shaft is rotatably arranged on the mounting frame through a bearing, and the rotating shaft extends to the outside of the mounting frame and is fixedly connected to the first handle, the third gear is fixedly sleeved on the rotating shaft, the second rack is fixedly arranged at the outer end of the connecting tube, the third gear is meshedly connected with the second rack, and the connecting tube can fit with the outer wall of the bottle mouth of the filling bottle.

[0009] Among them, the shifting assembly includes a connecting plate, a spring, a second handle and at least two positioning blocks, the connecting plate is located in the mounting frame, the spring is pre-stressed between the connecting plate and the mounting plate, the second handle and the positioning block are fixedly arranged on the connecting plate, the positioning block corresponds to the filling bottle one by one, the mounting frame is provided with a plurality of positioning grooves, and the positioning block can be plugged into and matched with the positioning grooves.

[0010] Wherein, a first slider is fixedly provided at the outer end of the extension tube, a first slide groove is provided at the inner end of the sampling tube, and the first slider is limitedly slidably connected with the first slide groove;

[0011] A second slider is fixedly provided at the outer end of the discharge pipe, a second slide groove is provided at the inner end of the connecting pipe, and the second slider is limitedly slidably connected with the second slide groove;

[0012] A third sliding block is fixedly arranged on the installation plate, a third sliding groove is provided on the installation frame, and the third sliding block is limitedly slidably connected with the third sliding groove.

[0013] Wherein, a sealing strip is fixedly provided at the outer end of the extension tube, and a sealing ring is fixedly provided at the lower end of the connecting tube.

[0014] Wherein, a third handle is fixedly provided on the outer end of the sampling tube.

[0015] Beneficial effects of the utility model:

[0016] The utility model provides a cement raw material sampling device. When in use, the first telescopic component is used to drive the extension tube to extend or retract the sampling tube to adjust it to a target length, and then the second telescopic component is used to drive the connecting tube to connect the discharge tube with the charging bottle, and then the exhaust fan is turned on to extract the cement raw material through the extension tube and the sampling tube. The cement raw material is then discharged through the feed tube and the discharge tube, and falls into the charging bottle through the connecting tube, thereby completing the sampling; when another sample needs to be taken, the connecting tube is first moved away from the charging bottle, and then the displacement component is used to drive the mounting plate to move, so as to move the empty charging bottle to the charging position, and then the connecting tube is used to make the connecting tube move. The pipe connects the discharge pipe to the charging bottle, and sampling can be carried out; the device is provided with an extension pipe and a first telescopic component, and the overall length of the sampling pipe can be adjusted according to actual use requirements to meet the sampling requirements of different depths and improve the applicability of the device; the device is provided with a connecting pipe and a second telescopic component to ensure that the raw cement falls into the charging bottle during sampling to prevent spillage, improve the use stability, and will not affect the movement of the charging bottle; the device is provided with a charging component and a shifting component, so the charging bottle can be replaced conveniently and quickly to meet the sampling requirements of different types of samples, improve the convenience of use, and improve the sampling efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a schematic diagram of the overall front cross-sectional structure in some embodiments of the present application;

[0019] Figure 2 It is a schematic diagram of the main cross-sectional structure of the exhaust assembly and the charging assembly in some embodiments of the present application;

[0020] Figure 3 This is a schematic diagram of the main structure of the exhaust assembly and the charging assembly in some embodiments of the present application;

[0021] Figure 4 It is a schematic diagram of the top view of the charging assembly in some embodiments of the present application;

[0022] Figure 5 for Figure 1 A schematic diagram of the enlarged structure at point A;

[0023] Figure 6 for Figure 1 Schematic diagram of the enlarged structure at point B.

[0024] The reference numerals are:

[0025] 1. Sampling tube; 11. First chute; 12. Third handle;

[0026] 2. Extension tube; 21. First slider; 22. Sealing strip;

[0027] 3. exhaust assembly; 31. first installation chamber; 32. exhaust fan; 33. feed pipe; 34. discharge pipe; 35. connecting pipe; 36. second slider; 37. second slide groove; 38. sealing ring;

[0028] 4. Loading assembly; 41. Mounting frame; 42. Connecting rod; 43. Mounting plate; 44. Loading bottle; 45. Positioning groove; 46. Third sliding block; 47. Third sliding groove;

[0029] 5. First telescopic assembly; 51. Second mounting chamber; 52. Motor; 53. First gear; 54. Second gear; 55. First rack;

[0030] 6. Second telescopic assembly; 61. Mounting frame; 62. Third gear; 63. Second rack; 64. Rotating shaft; 65. First handle;

[0031] 7. Shift assembly; 71. Connecting plate; 72. Spring; 73. Second handle; 74. Positioning block. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0033] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0034] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0035] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the product of the application is usually placed when in use. They are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0036] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0037] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0038] like Figures 1 to 4 As shown, the embodiment of the present application provides a cement raw meal sampling device, comprising a sampling tube 1, an extension tube 2, an exhaust assembly 3 and a loading assembly 4, one end of the extension tube 2 is slidably sleeved in the sampling tube 1, and a first telescopic assembly 5 is provided between the sampling tube 1 and the extension tube 2;

[0039] The exhaust assembly 3 includes a first installation chamber 31, an exhaust fan 32, a feed pipe 33, a discharge pipe 34 and a connecting pipe 35. The first installation chamber 31 is fixedly arranged at the lower end of the sampling tube 1, and the exhaust fan 32 is fixedly arranged in the first installation chamber 31. The air inlet end of the exhaust fan 32 is connected to the sampling tube 1 through the feed pipe 33, and the air outlet end of the exhaust fan 32 is connected to the discharge pipe 34. The discharge pipe 34 extends to the outside of the first installation chamber 31. The connecting pipe 35 is slidably sleeved on the discharge pipe 34. A second telescopic assembly 6 is arranged between the first installation chamber 31 and the connecting pipe 35.

[0040] The loading assembly 4 includes a mounting frame 41, a connecting rod 42, a mounting plate 43 and at least two loading bottles 44. The mounting frame 41 is fixedly arranged below the first mounting chamber 31 through the connecting rod 42, the mounting plate 43 is slidably arranged on the mounting frame 41, the loading bottles 44 are arranged on the mounting plate 43, and a shifting assembly 7 is arranged between the mounting frame 41 and the mounting plate 43.

[0041] When in use, the first telescopic component 5 is used to drive the extension tube 2 to extend or retract the sampling tube 1 to adjust it to the target length, and then the second telescopic component 6 is used to drive the connecting tube 35 to connect the discharge tube 34 with the charging bottle 44, and then the exhaust fan 32 is turned on to extract the cement raw material through the extension tube 2 and the sampling tube 1, and the cement raw material is then discharged through the feed pipe 33 and the discharge pipe 34, and falls into the charging bottle 44 through the connecting tube 35, thereby completing the sampling; when another sample needs to be taken, the connecting tube 35 is first moved away from the charging bottle 44, and then the displacement component 7 is used to drive the mounting plate 43 to move, so as to move the empty charging bottle 44 to the charging position, and then the connecting tube 35 is moved. Sampling can be carried out by connecting the discharge pipe 34 to the charging bottle 44; the device can adjust the overall length of the sampling tube 1 according to actual use requirements by providing an extension tube 2 and a first telescopic component 5, so as to meet the sampling requirements of different depths and improve the applicability of the device; the device can ensure that the raw cement material falls into the charging bottle 44 during sampling by providing a connecting tube 35 and a second telescopic component 6, thereby preventing it from spilling, improving the use stability and not affecting the movement of the charging bottle 44; the device can conveniently and quickly replace the charging bottle 44 by providing a charging component 4 and a shifting component 7, so as to meet the sampling requirements of different types of samples, improve the convenience of use and improve the sampling efficiency.

[0042] like Figure 1 and 5 As shown, in this embodiment, the first telescopic assembly 5 includes a second mounting chamber 51, a motor 52, a first gear 53, a second gear 54 and a first rack 55. The second mounting chamber 51 is fixedly arranged at the outer end of the sampling tube 1. The first gear 53 and the second gear 54 are both rotatably arranged in the second mounting chamber 51 through bearings. The motor 52 drives the first gear 53 to rotate, and the second gear 54 is meshed with the first gear 53. The first rack 55 is fixedly arranged at the outer end of the extension tube 2, and the second gear 54 extends into the sampling tube 1 and is meshed with the first rack 55.

[0043] When in use, the motor 52 is turned on to drive the first gear 53 to rotate, the first gear 53 drives the second gear 54 to rotate, the second gear 54 drives the first rack 55 to move, and the first rack 55 drives the extension tube 2 to move to extend or retract the sampling tube 1 to adjust it to the target length; by setting the extension tube 2 and the first telescopic component 5, the device can adjust the overall length of the sampling tube 1 according to actual use requirements to meet the sampling requirements of different depths and improve the applicability of the device.

[0044] like Figures 1 to 3 As shown, in this embodiment, the second telescopic assembly 6 includes a mounting frame 61, a third gear 62, a second rack 63, a rotating shaft 64 and a first handle 65. The mounting frame 61 is fixedly arranged at the outer end of the first mounting chamber 31, and the rotating shaft 64 is rotatably arranged on the mounting frame 61 through a bearing, and the rotating shaft 64 extends to the outside of the mounting frame 61 and is fixedly connected to the first handle 65. The third gear 62 is fixedly sleeved on the rotating shaft 64, and the second rack 63 is fixedly arranged at the outer end of the connecting tube 35. The third gear 62 is meshedly connected with the second rack 63, and the connecting tube 35 can fit with the outer wall of the bottle mouth of the filling bottle 44.

[0045] When in use, the first handle 65 is rotated to drive the rotating shaft 64 to rotate, the rotating shaft 64 drives the third gear 62 to rotate, the third gear 62 drives the second rack 63 to move, and the second rack 63 drives the connecting pipe 35 to move to be sleeved on the bottle mouth of the charging bottle 44, thereby connecting the discharge pipe 34 to the charging bottle 44; by providing the connecting pipe 35 and the second telescopic component 6, the device can ensure that the raw cement falls into the charging bottle 44 during sampling, prevents spillage, improves the stability of use, and does not affect the movement of the charging bottle 44.

[0046] like Figures 1 to 4 As shown, in this embodiment, the shift assembly 7 includes a connecting plate 71, a spring 72, a second handle 73 and at least two positioning blocks 74. The connecting plate 71 is located in the mounting frame 41. The spring 72 is pre-stressed between the connecting plate 71 and the mounting plate 43. The second handle 73 and the positioning blocks 74 are fixedly arranged on the connecting plate 71. The positioning blocks 74 correspond to the charging bottles 44 one by one. The mounting frame 41 is provided with a plurality of positioning grooves 45. The positioning blocks 74 can be plugged into and matched with the positioning grooves 45.

[0047] When in use, grasp the second handle 73 to drive the connecting plate 71 to move inward, so that the positioning block 74 is disengaged from the positioning groove 45. At this time, the spring 72 is compressed, and then the mounting plate 43 is driven to move, thereby moving the empty charging bottle 44 to the charging position, and then the second handle 73 is released. Under the elastic force of the spring 72, the connecting plate 71 drives the positioning block 74 to be inserted into the positioning groove 45, and the mounting plate 43 and the charging bottle 44 are limited and fixed; by setting the charging component 4 and the shifting component 7, the device can conveniently and quickly replace the charging bottle 44 to meet the sampling requirements of different types of samples, improve the convenience of use, and improve the sampling efficiency.

[0048] like Figure 2 , 4 As shown in FIG. 6 , in this embodiment, a first slider 21 is fixedly provided at the outer end of the extension tube 2, a first slide groove 11 is provided at the inner end of the sampling tube 1, and the first slider 21 is limitedly slidably connected with the first slide groove 11;

[0049] A second slider 36 is fixedly disposed at the outer end of the discharge pipe 34, a second slide groove 37 is provided at the inner end of the connection pipe 35, and the second slider 36 is slidably connected to the second slide groove 37 in a limited position;

[0050] A third sliding block 46 is fixedly provided on the mounting plate 43 , a third sliding groove 47 is formed on the mounting frame 41 , and the third sliding block 46 is connected to the third sliding groove 47 in a position-limiting sliding manner.

[0051] The coordinated use of the first slider 21 and the first slide groove 11 makes the extension tube 2 more stable and smooth when extending and retracting, the coordinated use of the second slider 36 and the second slide groove 37 makes the connecting tube 35 more stable and smooth when moving, and the coordinated use of the third slider 46 and the third slide groove 47 makes the mounting plate 43 more stable and smooth when moving, thereby improving the stability of use.

[0052] like Figures 1 to 3 As shown in Figure 6, in this embodiment, a sealing strip 22 is fixedly provided at the outer end of the extension tube 2, and a sealing ring 38 is fixedly provided at the lower end of the connecting tube 35; the sealing strip 22 and the sealing ring 38 can both improve the sealing effect and ensure smooth sampling. When in use, the connecting tube 35 is moved until the sealing ring 38 fits with the mounting plate 43.

[0053] like Figure 1 As shown, in this embodiment, a third handle 12 is fixedly provided at the outer end of the sampling tube 1; the third handle 12 is convenient for the staff to hold the sampling tube 1, thereby improving the convenience of use.

[0054] Working principle: When the cement raw meal sampling device provided by the present application is in use, the motor 52 is first turned on to drive the first gear 53 to rotate, the first gear 53 drives the second gear 54 to rotate, the second gear 54 drives the first rack 55 to move, the first rack 55 drives the extension tube 2 to move and extend or retract the sampling tube 1 to adjust to the target length; then the first handle 65 is rotated to drive the rotating shaft 64 to rotate, the rotating shaft 64 drives the third gear 62 to rotate, the third gear 62 drives the second rack 63 to move, the second rack 63 drives the connecting tube 35 to move to be sleeved on the bottle mouth of the charging bottle 44, thereby connecting the discharge tube 34 with the charging bottle 44; then the exhaust fan 32 is turned on to extract the cement raw meal through the extension tube 2 and the sampling tube 1, and the cement raw meal is extracted. It is then discharged through the feed pipe 33 and the discharge pipe 34, and falls into the charging bottle 44 through the connecting pipe 35, thereby completing the sampling; when another sample needs to be taken, first move the connecting pipe 35 away from the charging bottle 44, then grasp the second handle 73 to drive the connecting plate 71 to move inward, so that the positioning block 74 disengages from the positioning groove 45, at this time the spring 72 is compressed, and then drives the mounting plate 43 to move, thereby moving the empty charging bottle 44 to the charging position, and then releases the second handle 73, and under the elastic force of the spring 72, the connecting plate 71 drives the positioning block 74 to insert into the positioning groove 45, limits and fixes the mounting plate 43 and the charging bottle 44, and then uses the connecting pipe 35 to connect the discharge pipe 34 with the charging bottle 44, and sampling can be carried out.

[0055] The above are only preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A cement raw material sampling device, characterized in that: It comprises a sampling tube (1), an extension tube (2), an exhaust assembly (3) and a loading assembly (4), one end of the extension tube (2) is slidably sleeved in the sampling tube (1), and a first telescopic assembly (5) is arranged between the sampling tube (1) and the extension tube (2); The exhaust assembly (3) comprises a first installation chamber (31), an exhaust fan (32), a feed pipe (33), a discharge pipe (34) and a connecting pipe (35); the first installation chamber (31) is fixedly arranged at the lower end of the sampling tube (1); the exhaust fan (32) is fixedly arranged in the first installation chamber (31); the air inlet end of the exhaust fan (32) is connected to the sampling tube (1) through the feed pipe (33); and the air outlet end of the exhaust fan (32) is connected to the discharge pipe (34); the discharge pipe (34) extends to the outside of the first installation chamber (31); the connecting pipe (35) is slidably sleeved on the discharge pipe (34); and a second telescopic assembly (6) is arranged between the first installation chamber (31) and the connecting pipe (35); The charging assembly (4) comprises a mounting frame (41), a connecting rod (42), a mounting plate (43) and at least two charging bottles (44); the mounting frame (41) is fixedly arranged below the first mounting chamber (31) via the connecting rod (42); the mounting plate (43) is slidably arranged on the mounting frame (41); the charging bottles (44) are arranged on the mounting plate (43); and a displacement assembly (7) is arranged between the mounting frame (41) and the mounting plate (43).

2. The cement raw material sampling device according to claim 1, characterized in that: The first telescopic assembly (5) comprises a second mounting chamber (51), a motor (52), a first gear (53), a second gear (54) and a first rack (55); the second mounting chamber (51) is fixedly arranged at the outer end of the sampling tube (1); the first gear (53) and the second gear (54) are both rotatably arranged in the second mounting chamber (51) via bearings; the motor (52) drives the first gear (53) to rotate; the second gear (54) is meshedly connected with the first gear (53); the first rack (55) is fixedly arranged at the outer end of the extension tube (2); the second gear (54) extends into the sampling tube (1) and is meshedly connected with the first rack (55).

3. The cement raw material sampling device according to claim 1, characterized in that: The second telescopic assembly (6) comprises a mounting frame (61), a third gear (62), a second rack (63), a rotating shaft (64) and a first handle (65); the mounting frame (61) is fixedly arranged at the outer end of the first mounting chamber (31); the rotating shaft (64) is rotatably arranged on the mounting frame (61) through a bearing, and the rotating shaft (64) extends outside the mounting frame (61) and is fixedly connected to the first handle (65); the third gear (62) is fixedly sleeved on the rotating shaft (64); the second rack (63) is fixedly arranged at the outer end of the connecting tube (35); the third gear (62) is meshedly connected with the second rack (63); and the connecting tube (35) can fit with the outer wall of the bottle mouth of the filling bottle (44).

4. The cement raw material sampling device according to claim 1, characterized in that: The displacement assembly (7) comprises a connecting plate (71), a spring (72), a second handle (73) and at least two positioning blocks (74); the connecting plate (71) is located in the mounting frame (41); the spring (72) is pre-pressed between the connecting plate (71) and the mounting plate (43); the second handle (73) and the positioning blocks (74) are both fixedly arranged on the connecting plate (71); the positioning blocks (74) correspond to the charging bottles (44) one by one; the mounting frame (41) is provided with a plurality of positioning grooves (45); the positioning blocks (74) can be plugged into and matched with the positioning grooves (45).

5. The cement raw material sampling device according to claim 1, characterized in that: A first sliding block (21) is fixedly provided at the outer end of the extension tube (2), a first sliding groove (11) is provided at the inner end of the sampling tube (1), and the first sliding block (21) is connected to the first sliding groove (11) in a position-limiting sliding manner; A second slider (36) is fixedly provided at the outer end of the discharge pipe (34), a second slide groove (37) is provided at the inner end of the connecting pipe (35), and the second slider (36) is slidably connected to the second slide groove (37) in a limited position; A third sliding block (46) is fixedly arranged on the mounting plate (43), a third sliding groove (47) is provided on the mounting frame (41), and the third sliding block (46) is connected to the third sliding groove (47) in a position-limiting sliding manner.

6. The cement raw material sampling device according to claim 1, characterized in that: A sealing strip (22) is fixedly provided at the outer end of the extension tube (2), and a sealing ring (38) is fixedly provided at the lower end of the connecting tube (35).

7. The cement raw material sampling device according to claim 1, characterized in that: A third handle (12) is fixedly provided on the outer end of the sampling tube (1).

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