Blast hole plugging and dust falling structure

Abstract

The utility model relates to a blast hole plugging dust-falling structure which comprises a dust-falling mounting cavity, a positioning base and a connecting assembly, and is technically characterized in that a positioning magnetic plate is embedded in the middle of the upper surface of the positioning base, an annular reducing surface is arranged on the edge of the upper surface of the positioning base, and a plurality of groups of first positioning grooves are formed in the annular reducing surface; the first positioning grooves are internally provided with first positioning screws and first buffer springs arranged on the first positioning screws in a sleeving mode, multiple sets of second positioning grooves are formed in the edge of the upper surface of the supporting skirt platform of the dust falling installation cavity, and the second positioning grooves are internally provided with second positioning screws and second buffer springs arranged on the second positioning screws in a sleeving mode. The connecting assembly is composed of a plurality of Z-shaped connecting bases, side positioning upper magnetic strips attached to the vertical faces of the Z-shaped connecting bases are embedded in the side wall of the supporting skirt platform, and side positioning lower magnetic strips attached to the vertical faces of the Z-shaped connecting bases are arranged on the side wall of the positioning base. According to the structure, the positioning buffer structure is simplified under the condition that the position stability of the dust fall mounting cavity is guaranteed, and the stability is good.

Description

Technical Field

[0001] This utility model relates to the technical field of auxiliary equipment for mining blasting, specifically to a structure for sealing and reducing dust in blast holes. Background Technology

[0002] Currently, to avoid generating large amounts of dust during mine blasting operations, it is essential to adopt appropriate blasting dust suppression technologies to maintain the green development of mines. Based on this, existing blasting dust suppression technologies generally employ blasting pressure atomization. The blasting holes are filled with water-based mud, electric detonators, and explosives. The water-based mud is injected into circular bags to suppress dust, and finally, clay mud is used to seal the blasting holes.

[0003] For example, CN 222460473 U discloses a borehole sealing and dust suppression structure based on blast pressure atomization. It includes a bottom cavity seat, a stabilizing component slidably connected to the upper end of the bottom cavity seat, a dust suppression installation cavity at the upper end of the stabilizing component, and multiple sets of blast holes evenly distributed on one side of the dust suppression installation cavity. The stabilizing component includes a support seat slidably connected to one side of the bottom cavity seat, a long groove on the top surface of the support seat, a rotating rod rotatably connected to one side of the support seat, and a supporting long block slidably connected to the inner cavity of two sets of long grooves. A stabilizing plate is provided on the top of the supporting long block, and a rubber pad is provided on one side of the inner wall of the stabilizing plate. To avoid shaking during the movement of the dust suppression installation cavity and to prevent explosives and sludge from impacting the cavity wall, or even damaging the sludge, this borehole sealing and dust suppression structure incorporates a stabilizing component and a buffer protection mechanism. However, the following problems still exist: the design of the stabilizing component and the buffer protection mechanism is intended to ensure the positional stability of the dust suppression installation cavity, but the structural design is relatively complex. Utility Model Content

[0004] The purpose of this invention is to provide a simple and reliable borehole sealing and dust suppression structure that solves the above problems. While ensuring the stability of the dust suppression installation cavity, it simplifies the positioning and buffering structure and has good stability.

[0005] The technical solution of this utility model is:

[0006] A dust suppression structure for sealing blast holes includes a dust suppression mounting cavity, a positioning base, and connecting components. The dust suppression mounting cavity has blast holes evenly distributed on one side, and a supporting skirt is provided at the bottom. The key technical features are: a positioning magnetic plate is embedded in the center of the upper surface of the positioning base; the supporting skirt is attracted to the positioning base by the positioning magnetic plate; an annular reducing surface is provided on the edge of the upper surface of the positioning base, and multiple sets of first positioning grooves are provided on the annular reducing surface; a first positioning screw and a first buffer spring fitted onto the first positioning screw are provided in the first positioning groove; and multiple sets of second positioning grooves, the same number as the first positioning grooves, are provided on the edge of the upper surface of the supporting skirt. The system includes a second positioning screw and a second buffer spring fitted onto the second positioning screw. The connecting assembly consists of multiple Z-shaped connecting seats, the number of which is the same as the number of sets of the first positioning slots. The lower horizontal section of the Z-shaped connecting seat has a lower through hole corresponding to the first positioning screw. The upper end of the first positioning screw passes through the lower through hole and is connected to the first locking nut. The upper horizontal section of the Z-shaped connecting seat has an upper through hole corresponding to the second positioning screw. The upper end of the second positioning screw passes through the upper through hole and is connected to the second locking nut. The side wall of the supporting skirt is fitted with a side positioning upper magnetic strip that is in contact with the vertical surface of the Z-shaped connecting seat. The side wall of the positioning base is fitted with a side positioning lower magnetic strip that is in contact with the vertical surface of the Z-shaped connecting seat.

[0007] In the aforementioned borehole sealing and dust reduction structure, the lower horizontal section of the Z-shaped connecting seat has a first groove corresponding to the first buffer spring on its lower surface, and the upper horizontal section of the Z-shaped connecting seat has a second groove corresponding to the second buffer spring on its lower surface.

[0008] The aforementioned borehole sealing and dust reduction structure comprises a first locking nut and a second locking nut, which are respectively composed of a locking nut and a fixing nut.

[0009] The aforementioned borehole sealing and dust reduction structure has a set of first positioning grooves evenly distributed around the center line of the positioning base, each set of first positioning grooves consisting of two first positioning grooves arranged at intervals. The set of second positioning grooves is evenly distributed around the center line of the positioning base, each set of second positioning grooves consisting of two second positioning grooves arranged at intervals. The upper horizontal section of the Z-shaped connecting seat is provided with two upper through holes at intervals, and the lower horizontal section is provided with two lower through holes at intervals.

[0010] In the aforementioned borehole sealing and dust reduction structure, the supporting skirt is square, the annular reduction surface on the upper surface of the positioning base is square, and the number of Z-shaped connecting seats is four.

[0011] The beneficial effects of this utility model are:

[0012] Compared to the prior art disclosed in CN 222460473 U, this utility model simplifies the positioning and buffering structure. Furthermore, during transportation, if vibration occurs, the first and second buffer springs provide vertical cushioning. Simultaneously, the magnetic attraction of the positioning magnetic plate, the upper side positioning magnetic strip, and the lower side positioning magnetic strip prevents horizontal relative displacement between the dust-collecting installation cavity and the positioning base. This also avoids significant shearing forces on the first and second positioning screws caused by vibration, extending service life and ensuring good connection stability. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 yes Figure 1 Top view.

[0015] In the figure: 1. Dust suppression installation cavity, 2. Second positioning screw, 3. Second locking combination nut, 4. Second buffer spring, 5. Z-shaped connecting seat, 6. First positioning screw, 7. First locking combination nut, 8. First buffer spring, 9. Positioning base, 10. Lower side positioning magnetic strip, 11. Positioning magnetic plate, 12. Upper side positioning magnetic strip, 13. Support skirt. Detailed Implementation

[0016] The present invention will be described in detail with reference to the accompanying drawings.

[0017] like Figure 1 , Figure 2 As shown, the borehole sealing and dust suppression structure includes a dust suppression installation cavity 1, a positioning base 9, and connecting components. Explosion holes are evenly distributed on one side of the dust suppression installation cavity 1, and a supporting skirt 13 is provided at the bottom of the dust suppression installation cavity 1.

[0018] The positioning base 9 has a positioning magnetic plate 11 embedded in the middle of its upper surface, and the supporting skirt 13 is attracted to the positioning base 9 by the positioning magnetic plate 11.

[0019] The upper surface edge of the positioning base 9 is provided with an annular reduction surface, and the annular reduction surface is provided with multiple sets of first positioning grooves. The first positioning grooves are provided with a first positioning screw 6 and a first buffer spring 8 fitted on the first positioning screw 6. The upper surface edge of the supporting skirt 13 is provided with multiple sets of second positioning grooves with the same number of sets as the first positioning grooves. The second positioning grooves are provided with a second positioning screw 2 and a second buffer spring 4 fitted on the second positioning screw 2.

[0020] The connecting assembly consists of multiple Z-shaped connecting seats 5, the number of which is the same as the number of sets of the first positioning grooves. The lower horizontal section of the Z-shaped connecting seat 5 has a lower through hole corresponding to the first positioning screw 6, the upper end of which passes through the lower through hole and connects to the first locking nut 7. The upper horizontal section of the Z-shaped connecting seat 5 has an upper through hole corresponding to the second positioning screw 2, the upper end of which passes through the upper through hole and connects to the second locking nut 3. In this embodiment, the lower surface of the lower horizontal section of the Z-shaped connecting seat 5 has a first groove corresponding to the first buffer spring 8, and the lower surface of the upper horizontal section of the Z-shaped connecting seat 5 has a second groove corresponding to the second buffer spring 4. The first locking nut 7 and the second locking nut 3 are respectively composed of a locking nut and a fixing nut.

[0021] The side wall of the supporting skirt 13 is fitted with a side positioning upper magnetic strip 12 that is in contact with the vertical surface of the Z-shaped connecting seat 5, and the side wall of the positioning base 9 is provided with a side positioning lower magnetic strip 10 that is in contact with the vertical surface of the Z-shaped connecting seat 5.

[0022] In this embodiment, the supporting skirt 13 is square, the annular reduced surface on the upper surface of the positioning base 9 is square annular, and there are four Z-shaped connecting seats 5, resulting in four sets of first positioning grooves and four sets of second positioning grooves. Each set of first positioning grooves is evenly distributed around the center line of the positioning base 9, and each set consists of two spaced-apart first positioning grooves. Similarly, each set of second positioning grooves is evenly distributed around the center line of the positioning base 9, and each set consists of two spaced-apart second positioning grooves. The upper horizontal section of the Z-shaped connecting seat 5 has two spaced-apart upper through holes, and the lower horizontal section has two spaced-apart lower through holes.

[0023] Working principle:

[0024] 1. During assembly, first place the dust-reducing installation cavity 1 on the upper surface of the positioning base 9, and use the positioning magnetic plate 11 to pre-position it.

[0025] 2. Next, the four Z-shaped connecting seats 5 are respectively fastened between the first positioning screw 6 and the second positioning screw 2, and locked in place using the first locking combination nut 7 and the second locking combination nut 3. The vertical surface of the Z-shaped connecting seat 5 is in contact with the corresponding side positioning upper magnetic strip 12 and side positioning lower magnetic strip 10 to achieve enhanced positioning.

[0026] 3. During transportation, if vibration occurs, the first buffer spring 8 and the second buffer spring 4 are used to achieve vertical buffering. At the same time, the magnetic attraction of the positioning magnetic plate 11, the side positioning upper magnetic strip 12 and the side positioning lower magnetic strip 10 prevents the relative displacement of the dust removal installation cavity 1 and the positioning base 9 in the horizontal direction, and also prevents the vibration from causing a large shear force on the first positioning screw 6 and the second positioning screw 2, thus extending the service life and ensuring good connection stability.

[0027] The embodiments of this utility model have been described in detail above, but the content described is only a preferred embodiment of this utility model and should not be considered as limiting the scope of implementation of this utility model. All equivalent changes and improvements made within the scope of this utility model should still fall within the scope of this utility model.

Claims

1. A blast hole sealing dust fall structure, comprising a dust fall mounting cavity, a positioning base and a connecting assembly, the blast hole sealing dust fall structure is characterized in that: The upper surface of the positioning base is embedded with a positioning magnetic plate, the support skirt is attracted to the upper surface of the positioning base by the positioning magnetic plate, the upper surface of the positioning base is provided with an annular reducing surface, and a plurality of first positioning grooves are arranged on the annular reducing surface, a first positioning screw and a first buffer spring sleeved on the first positioning screw are arranged in each first positioning groove, the upper surface of the support skirt is provided with a plurality of second positioning grooves which are the same in number as the first positioning grooves, a second positioning screw and a second buffer spring sleeved on the second positioning screw are arranged in each second positioning groove, the connecting assembly is composed of a plurality of Z-shaped connecting seats, the number of the Z-shaped connecting seats is the same as the number of the first positioning grooves, the lower horizontal section of the Z-shaped connecting seat is provided with a lower through hole corresponding to the first positioning screw, the upper end of the first positioning screw passes through the lower through hole and is connected with a first locking combination nut, the upper horizontal section of the Z-shaped connecting seat is provided with an upper through hole corresponding to the second positioning screw, the upper end of the second positioning screw passes through the upper through hole and is connected with a second locking combination nut, the side wall of the support skirt is embedded with a side positioning upper magnetic strip which is attached to the vertical surface of the Z-shaped connecting seat, and the side wall of the positioning base is provided with a side positioning lower magnetic strip which is attached to the vertical surface of the Z-shaped connecting seat.

2. The borehole sealing and dust control structure of claim 1, wherein: The lower horizontal section of the Z-shaped connecting seat is provided with a first groove corresponding to the first buffer spring in the lower surface, and the upper horizontal section of the Z-shaped connecting seat is provided with a second groove corresponding to the second buffer spring in the lower surface.

3. The borehole stemming dust control structure of claim 1, wherein: The first locking combination nut and the second locking combination nut are respectively composed of a locking nut and a fixed nut.

4. The borehole stemming dust control structure of claim 1, wherein: Each group of first positioning grooves is uniformly distributed around the center line of the positioning base, and each group of first positioning grooves is composed of two first positioning grooves arranged at intervals, each group of second positioning grooves is uniformly distributed around the center line of the positioning base, and each group of second positioning grooves is composed of two second positioning grooves arranged at intervals, two upper through holes are arranged at intervals on the upper horizontal section of the Z-shaped connecting seat, and two lower through holes are arranged at intervals on the lower horizontal section of the Z-shaped connecting seat.

5. The borehole stemming dust control structure of claim 1, wherein: The support skirt is square, the annular reducing surface of the upper surface of the positioning base is square ring-shaped, and the number of the Z-shaped connecting seats is four.

Images