Crusher sealing gasket and cover plate

Abstract

The utility model relates to a crusher sealing gasket and a cover plate, which effectively solve the problems that pores on a cover plate in a traditional crusher are easy to block and the like. Comprising a supporting frame arranged on the horizontal plane, a base is rotationally connected to the supporting frame, a smashing cylinder is coaxially fixed to the base, a pneumatic motor is fixed in the base, a rotating shaft penetrating through the smashing cylinder is rotationally connected in the smashing cylinder, multiple sets of smashing blades are coaxially fixed to the rotating shaft, and the multiple sets of smashing blades are located in the smashing cylinder; the device is ingenious in structure and convenient to use, through the arrangement of the bottom plate, the connecting cylinder, the pressing plate and the like, coal briquettes with large particle sizes cannot get close to the middle of the bottom plate in the crushing process, small particles can stay in the buffering cavity, only gas penetrates through the through groove and the thin holes in the cover plate to enter the collecting pipe and finally enters a gas detector to be detected, and the detection efficiency is improved. Compared with an existing small pulverizer, the problem that filter holes of the cover plate are blocked is reduced or even completely eradicated in the mode, and the detection efficiency is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of small pulverizers, in particular to a sealing pad and a cover plate of a pulverizer. Background Art

[0002] The gas concentration detector is an instrument used in various mines and different rock conditions to measure the gas concentration in coal seams. During the coal mining process, since the gas carried in the coal seam is a flammable and explosive gas, when workers are drilling or excavating, the gas will suddenly gush out (gas outburst), causing the gas content in the channel to be too high, causing the excavators to inhale excessively concentrated gas and cause hypoxia. Even when it reaches a certain concentration, it will increase the risk of explosion. At this time, it is necessary to detect the gas content in the coal seam in advance.

[0003] When detecting gas in coal blocks, the coal blocks to be tested need to be poured into a grinder to crush them, and the gas in them is collected and transported to a gas detector for testing. The grinder used is a small portable grinder, which is also used in crushing fields such as traditional Chinese medicine.

[0004] However, after the coal blocks to be tested are poured into the small crusher, since there is a very small hole running through the cover plate, when the test gas passes through the hole and enters the gas detector, some coal particles with larger diameters will block the hole, which is not only inconvenient for detecting the gas concentration in the gas, but also very troublesome to clean the hole. Utility Model Content

[0005] In view of the above problems, the present invention provides a pulverizer sealing gasket and a cover plate, which have the advantages of being easy to use and the fine holes on the cover plate are not easily blocked.

[0006] The technical solution is as follows: the utility model comprises a support frame placed on a horizontal plane, the support frame is rotatably connected to a base, a crushing barrel is coaxially fixed to the base, an air motor is fixed inside the base, a rotating shaft penetrating the crushing barrel is rotatably connected inside the crushing barrel, a plurality of crushing blades are coaxially fixed to the rotating shaft, the plurality of crushing blades are located inside the crushing barrel, one end of the rotating shaft is coaxially fixed to the output shaft of the air motor, a cover plate is provided on the top of the crushing barrel, a fine hole is penetrated at the axis of the cover plate, a collecting pipe is coaxially fixed to the top of the cover plate, a hose is connected to one side of the collecting pipe, and a gas detector is connected to the end of the hose away from the collecting pipe;

[0007] A sealing gasket is coaxially arranged in the crushing cylinder, and the sealing gasket includes a bottom plate, the bottom surface of the bottom plate is a conical surface with a thin outer circle and a thick middle, a guide cylinder is fixed at the bottom axis of the bottom plate, and a crushing chamber is formed between the bottom plate and the connecting cylinder, a connecting cylinder is coaxially fixed on the bottom plate, a through hole is penetrated at the axis of the bottom plate, the diameter of the through hole is consistent with the inner diameter of the connecting cylinder, a plurality of filter holes uniformly distributed around the circumference are formed on the connecting cylinder, a pressing plate is fixed on the top of the connecting cylinder, the pressing plate is in contact with the cover plate, the diameter of the pressing plate is larger than the diameter of the connecting cylinder and smaller than the diameter of the bottom plate, a buffer chamber is formed between the bottom plate and the cover plate, and a plurality of through grooves uniformly distributed around the circumference are formed on the top of the cover plate.

[0008] Preferably, the taper of the conical surface of the bottom plate is 5°-15°.

[0009] Preferably, a manual valve is coaxially arranged on the collecting pipe.

[0010] Preferably, a sealing groove is provided at the outer edge of the bottom plate, and a sealing ring is provided in the sealing groove.

[0011] Preferably, the pressing plate is in a circular, rectangular, triangular, trapezoidal or polygonal shape.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] Through the settings of the bottom plate, connecting tube and pressure plate, during the coal block crushing process, the coal blocks with larger particle sizes will not move closer to the middle of the bottom plate, and small particles or dust gas will enter the buffer chamber through the through holes and filter holes. The small particles will stay in the buffer chamber, and only the gas will pass through the through grooves and the fine holes on the cover plate into the collection pipe, and finally enter the gas detector for detection. Compared with the existing small crushers, this method reduces or even eliminates the problem of clogging of the filter holes on the cover plate, greatly improving the detection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional schematic diagram of the utility model.

[0015] Figure 2 It is a schematic diagram of the cooperation between the cover plate and the crushing cylinder of the utility model.

[0016] Figure 3 It is a cross-sectional schematic diagram of the utility model.

[0017] Figure 4 It is a schematic diagram of the cooperation between the cover plate and the sealing gasket in the utility model.

[0018] Figure 5 It is a structural schematic diagram of the sealing pad in the utility model.

[0019] Figure 6It is a structural schematic diagram of the sealing ring in the utility model.

[0020] Explanation of the symbols in the schematic diagram:

[0021] 1. Support frame; 2. Base; 3. Crushing cylinder; 4. Pneumatic motor; 5. Crushing blade; 6. Cover plate; 7. Collecting pipe; 8. Hose; 9. Gas detector; 10. Sealing pad; 11. Bottom plate; 12. Guide cylinder; 13. Connecting cylinder; 14. Filter hole; 15. Pressing plate; 16. Crushing chamber; 17. Buffer chamber; 18. Through groove; 19. Manual valve; 20. Sealing ring. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] Depend on Figures 1 to 6 It is given, including a support frame 1 placed on a horizontal plane, the support frame 1 is rotatably connected to a base 2, a crushing barrel 3 is coaxially fixed to the base 2, an air motor 4 is fixed inside the base 2, the air motor 4 is externally connected to an air supply device, the air motor 4 is adopted in order to enable long-term crushing, if an electric motor is adopted for crushing, the motor is prone to overheating, resulting in the motor burning out, and the use time of the air motor 4 is not limited, a rotating shaft that penetrates the crushing barrel 3 is rotatably connected inside the crushing barrel 3, a plurality of groups of crushing blades 5 are coaxially fixed on the rotating shaft, the plurality of groups of crushing blades 5 are located in the crushing barrel 3, one end of the rotating shaft is coaxially fixed to the output shaft of the air motor 4, a cover plate 6 is provided on the top of the crushing barrel 3, it should be emphasized that the above-mentioned structures such as the crushing barrel 3, the crushing blades 5 and the base 2 are relatively common on the market. , which is also used in the field of crushing traditional Chinese medicine. I will not go into details here. A fine hole is opened through the axis of the cover plate 6. A collecting pipe 7 is coaxially fixed on the top of the cover plate 6. A hose 8 is connected to one side of the collecting pipe 7. The end of the hose 8 away from the collecting pipe 7 is connected to a gas detector 9. Through the support frame 1, the crushing cylinder 3 and the crushing blade 5, the coal block to be detected is poured into the crushing cylinder 3, the cover plate 6 is covered, the pneumatic motor 4 is started, and the crushing blade 5 rotates and crushes the coal block. During the crushing process, the coal block is also rotated in the direction of rotation of the crushing blade 5 while flying up and down in the crushing cylinder 3 until the coal block becomes powder. The fine dust or gas generated therein will enter the gas detector 9 through the holes on the cover plate 6, and the gas detector 9 detects the gas content contained in the gas;

[0024] In actual use, since the coal blocks fly up and down at a high degree during the crushing process, it is inevitable that coal blocks with relatively large particle sizes will enter the pores in the cover plate 6, causing the pores to be blocked, which is not only inconvenient for the detection of gas content, but also inconvenient for cleaning, resulting in great inconvenience in the use of the equipment. A sealing gasket 10 is coaxially arranged in the crushing cylinder 3, and the sealing gasket 10 includes a bottom plate 11. The diameter of the bottom plate 11 is consistent with the inner diameter of the crushing cylinder 3. The bottom surface of the bottom plate 11 is a conical surface with a thin outer circle and a thick middle. A guide cylinder 12 is fixed at the bottom axis of the bottom plate 11, and a crushing chamber 16 is formed between the bottom plate 11 and the connecting cylinder 13. Through the settings of the sealing gasket 10, the conical surface and the guide cylinder 12, when the coal blocks flip inside the crushing cylinder 3 Due to the effect of centrifugal force, most of the coal blocks will gather on the inner wall of the crushing cylinder 3. It is necessary to move the crushing cylinder 3 back and forth several times to make the coal blocks contact with the crushing blades 5 faster. If there is no obstruction of the sealing gasket 10, the coal particles with larger particle sizes will easily run directly into the fine holes in the cover plate 6, causing blockage of the fine holes. However, after being guided by the sealing gasket 10, the conical surface and the guide cylinder 12, the coal blocks will only be crushed and rotated in the crushing chamber 16 to form a certain circulation path, thereby preventing the large-particle-sized coal blocks from running directly into the fine holes. A connecting cylinder 13 is coaxially fixed on the bottom plate 11, and a through hole is opened at the axis of the bottom plate 11. The diameter of the through hole is consistent with the inner diameter of the connecting cylinder 13. A plurality of filter holes 14 evenly distributed around the circumference are opened on the connecting cylinder 13. A pressing plate 15 is fixed on the top of 3. The pressing plate 15 is circular in shape. The pressing plate 15 contacts the cover plate 6. The diameter of the pressing plate 15 is larger than the diameter of the connecting tube 13 and smaller than the diameter of the bottom plate 11. A buffer chamber 17 is formed between the bottom plate 11 and the cover plate 6. A plurality of through grooves 18 evenly distributed around the circumference are provided on the top of the pressing plate 15. When the cover plate 6 contacts the pressing plate 15, the plurality of through grooves 18 are equivalent to air inlet channels. Only gas can enter the gas detector 9 from the through grooves 18. A circular hole is provided at the top axis of the pressing plate 15. Through the bottom plate 11, the connecting tube 13 and the pressing plate 15, after the coal blocks are poured into the crushing tube 3, the sealing gasket 10 is manually placed in the crushing tube 3. When placing, ensure that the bottom plate 11 is in a horizontal state. Then, The cover plate 6 presses the pressing plate 15 downward until the cover plate 6 is completely fitted with the crushing tube 3. At this time, the pneumatic motor 4 is started, and the coal blocks are crushed inside the crushing chamber 16 driven by the crushing blade 5. Since the bottom surface of the bottom plate 11 is a conical surface, under the guidance of the conical surface and the guide tube 12, most of the coal blocks with larger particle sizes will not move toward the middle of the bottom plate 11 during the process of flying up and down. Small particles or dust gas will pass through the through holes and filter holes 14 into the buffer chamber 17, and the small particles will stay in the buffer chamber 17. Only the gas passes through the through groove 18 and the fine holes on the cover plate 6 into the collecting pipe 7, and finally enters the gas detector 9 for detection. Compared with the existing small crusher, this method reduces or even eliminates the problem of blockage of the filter hole 14 of the cover plate 6.Greatly improved the detection efficiency.

[0025] It has been found in a large number of practical uses that the taper of the conical surface of the bottom plate 11 is 5°-15°. Within this taper range, the sealing gasket 10 has the best barrier and guiding properties for coal blocks.

[0026] refer to Figures 1 to 3 As shown, a manual valve 19 is coaxially arranged on the collecting tube 7. The manual valve 19 makes the ventilation pressure of the gas detector 9 more stable, and the analysis process of the gas to be detected is also smoother, thereby improving the accuracy of the detection result.

[0027] refer to Figure 4 and Figure 6 As shown, in order to ensure the sealing between the bottom plate 11 and the pulverizing tube 3, a sealing groove is opened at the outer edge of the bottom plate 11, and a sealing ring 20 is arranged in the sealing groove.

[0028] The shape of the pressing plate 15 is circular, rectangular, triangular, trapezoidal or polygonal. In the present embodiment, the shape of the pressing plate 15 is circular.

[0029] When the utility model is used:

[0030] First, after pouring the coal into the crushing tube 3, manually put the sealing gasket 10 into the crushing tube 3, make sure that the bottom plate 11 is in a horizontal state when placing it, and then press the cover plate 6 down against the pressing plate 15 until the cover plate 6 is completely in contact with the crushing tube 3;

[0031] Then, the pneumatic motor 4 is started, and the coal blocks are crushed inside the crushing chamber 16 driven by the crushing blade 5. Under the guidance of the conical surface and the guide cylinder 12, most of the coal blocks with larger particle sizes will not move toward the middle of the bottom plate 11 during the process of flying up and down, and small particles or dust gas will enter the buffer chamber 17 through the through holes and filter holes 14;

[0032] Secondly, the small particles will stay in the buffer chamber 17, and the gas will pass through the through slot 18 and the fine holes on the cover plate 6 into the collecting pipe 7, and finally enter the gas detector 9 for detection;

[0033] Finally, after the detection is completed, the cover plate 6 and the sealing gasket 10 are completely taken out, and the coal powder inside is poured out.

[0034] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pulverizer sealing gasket and cover plate, comprising a support frame (1) placed on a horizontal plane, characterized in that: The support frame (1) is rotatably connected to a base (2), a crushing barrel (3) is coaxially fixed to the base (2), an air motor (4) is fixed inside the base (2), a rotating shaft penetrating the crushing barrel (3) is rotatably connected inside the crushing barrel (3), a plurality of groups of crushing blades (5) are coaxially fixed on the rotating shaft, the plurality of groups of crushing blades (5) are located inside the crushing barrel (3), one end of the rotating shaft is coaxially fixed to the output shaft of the air motor (4), a cover plate (6) is provided on the top of the crushing barrel (3), a fine hole is penetrated at the axis of the cover plate (6), a collecting pipe (7) is coaxially fixed to the top of the cover plate (6), one side of the collecting pipe (7) is connected to a hose (8), and the end of the hose (8) away from the collecting pipe (7) is connected to a gas detector (9); A sealing gasket (10) is coaxially arranged inside the pulverizing cylinder (3), and the sealing gasket (10) comprises a bottom plate (11). The bottom surface of the bottom plate (11) is a conical surface with a thin outer circle and a thick middle. A guide cylinder (12) is fixed at the bottom axis of the bottom plate (11). A pulverizing chamber (16) is formed between the bottom plate (11) and the connecting cylinder (13). The connecting cylinder (13) is coaxially fixed on the bottom plate (11). A through hole is opened through the axis of the bottom plate (11). The diameter of the through hole is equal to that of the connecting cylinder (13). The inner diameters of the connecting tube (13) are consistent, and a plurality of filter holes (14) evenly distributed around the circumference are formed on the connecting tube (13). A pressing plate (15) is fixed on the top of the connecting tube (13), and the pressing plate (15) is in contact with the cover plate (6). The diameter of the pressing plate (15) is larger than the diameter of the connecting tube (13) and smaller than the diameter of the bottom plate (11). A buffer cavity (17) is formed between the bottom plate (11) and the cover plate (6), and a plurality of through grooves (18) evenly distributed around the circumference are formed on the top of the cover plate (6).

2. A pulverizer sealing gasket and cover plate according to claim 1, characterized in that: The taper of the tapered surface of the bottom plate (11) is 5°-15°.

3. A pulverizer sealing gasket and cover plate according to claim 1, characterized in that: A manual valve (19) is coaxially arranged on the collecting pipe (7).

4. A pulverizer sealing gasket and cover plate according to claim 1, characterized in that: A sealing groove is provided at the outer edge of the bottom plate (11), and a sealing ring (20) is arranged in the sealing groove.

5. A pulverizer sealing gasket and cover plate according to claim 1, characterized in that: The shape of the pressing plate (15) is circular, rectangular, triangular, trapezoidal or polygonal.

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