CN220470015U

CN220470015U - Wellhead structure

Info

Publication number: CN220470015U
Application number: CN202321701447.2U
Authority: CN
Inventors: 普绍武; 黄原明; 唐锐; 杨玉明; 叶芝华
Original assignee: Yuxi Mining Co ltd
Current assignee: Yuxi Mining Co ltd
Priority date: 2023-06-30
Filing date: 2023-06-30
Publication date: 2024-02-09
Anticipated expiration: 2033-06-30

Abstract

The application discloses a drop shaft mouth structure, wherein the peripheral edges of the top surfaces of drop shafts are arranged on the same plane; comprising the following steps: an integral screen plate; the integral screen plate is accommodated in the drop shaft and is sunken for 1m relative to the periphery of the top surface of the drop shaft; the integrative sieve includes: the first screening area and the second screening area; the lateral length of the screen cells of the first screen cell area is greater than the lateral length of the screen cells of the second screen cell area. Through holding in the drop shaft mouth and setting up integrative sieve, sieve integral erection just sinks 1m setting in the drop shaft mouth and relative well border, can strengthen the intensity that whole sieve endured impulsive force on the one hand, avoid the emergence of the cracked condition of welding point, on the other hand provides accommodation space for the whereabouts ore, avoids the ore outwards to roll off, reduces the work load of manual work accomodating ore, and integrative sieve is whole simultaneously with well border parallel arrangement, reduces whereabouts ore decurrent impact force, effectively protects the sieve, increase of service life reduces the maintenance number of times.

Description

Wellhead structure

Technical Field

The application relates to the technical field of ore mining, in particular to a drop shaft mouth structure.

Background

The underground mining is influenced by blasting effect, geological structure and other factors, the lump size of the mined ore is uneven, in order to improve the transportation efficiency of the lower transportation middle section, the large lump number of the lower vibrating port and the secondary deblocking times are reduced, the lump size of the ore placed at the upper drop shaft port is strictly controlled, and the existing method is to control the blanking lump size through a grid by installing a grid screen at the well head. The large blocks are limited to slide into the shaft through the specification of the screen opening, so that the phenomenon of clamping the shaft in the middle of the drop shaft and clamping the hopper at the middle section of the vibration machine opening is prevented.

The existing installation mode of the underground wellhead grid is mainly an inclined grid, wherein the front end of the inclined grid is an inclined bar screen, and the rear end of the inclined bar screen is a plane grid, and the installation mode is specifically shown in fig. 1. When the ore is poured, the ore rolls on the front-end inclined bar screen, so that the ore is automatically lowered onto the grid screen on the top surface of the drop shaft.

However, due to uneven ore block, part of ore which can not be dropped into the drop shaft through the inclined bar screen is easy to be piled up on the grid screen, so that the flow dropping space of the well head grid screen is reduced, the well head grid screen is blocked, the ore dropping effect is poor,

the oblique screen bars and the flat screen bars are connected in a welded mode, and meanwhile, due to the fact that inclined planes exist in the oblique screen bars and the oblique flat screen, the impact strength of the welded connection is high and easy to break and damage when ore rolls downwards, the failure rate of the screen is high, and ore discharging efficiency is affected.

Simultaneously, because the existing chute wellhead bar screen and the existing grid screen are arranged at the wellhead, the ores lack of space for accommodating the ores on the top surface of the ore, after the ores are blocked, other ores can roll outwards, and the rolling ores also need to be collected again, so that the workload is increased.

Disclosure of Invention

The utility model provides a to above-mentioned technical problem, provide an drop shaft mouth structure, the device can increase the effective space of putting down of dish district drop shaft mouth grid sieve ore, improves drop shaft mouth ore and descends efficiency, avoids the outwards roll-off of pile ore, reduces artifical amount of labour, avoids the appearance that drop shaft mouth screen frame structure fracture leads to the condition of need overhauling.

The utility model provides a drop shaft mouth structure, the peripheral edge of the top surface of the drop shaft is arranged on the same plane; comprising the following steps: an integral screen plate; the integral screen plate is accommodated in the drop shaft and is sunken for 1m relative to the periphery of the top surface of the drop shaft;

the integrative sieve includes: the first screening area and the second screening area; the lateral length of the screen cells of the first screen cell area is greater than the lateral length of the screen cells of the second screen cell area.

Preferably, it comprises: a mounting assembly; the integrative sieve passes through the installation component and installs in the drop shaft.

Preferably, installing the rebar assembly includes: supporting I-steel and a plurality of mounting steel bars; the support I-steel is arranged on the ground of the central area of the integrated sieve plate; two ends of the supporting I-steel extend out of the integrated sieve plate and are connected with the inner side wall of the drop shaft in a mounting way;

the mounting steel bars are arranged at intervals around the outer side wall of the integrated sieve plate; one end of the installation reinforcing steel bar is connected with the side wall of the integrated screen plate, and the other end of the installation reinforcing steel bar is inserted and installed on the inner side wall of the drop shaft.

Preferably, the drop shaft comprises: a wellbore; the pit shaft is arranged below the integrated sieve plate.

Preferably, the unitary screen panel comprises: the grid longitudinal bars are arranged in pairs; the cross bars of the grid and the longitudinal bars of the grid are connected end to form a rectangular frame.

Preferably, the lateral length of the first screening zone is 1600mm; the second screening zone has a transverse length of 1140mm.

Preferably, the integrated screen comprises: a plurality of grid bars; the grid cross bars are parallel to each other, and two ends of the grid cross bars are respectively connected with the grid longitudinal bars; the interval between adjacent grid cross bars is 700mm.

Preferably, the integrated screen comprises: a middle cross bar; the middle transverse baffle rod and the grid longitudinal rod are arranged in parallel in the central area of the integrated screen plate to separate the first grid area and the second grid area.

The beneficial effects that this application can produce include:

1) According to the drop shaft mouth structure, through accommodating and setting up integrative sieve in the drop shaft mouth, the sieve is wholly installed in the drop shaft mouth and is sunk 1m relative to the well edge and set up, on the one hand, the intensity of the impact force is endured to whole sieve can be enhanced, the occurrence of the fracture condition of welding points is avoided, on the other hand, accommodation space is provided for falling ore, the ore is avoided rolling outwards, the work load of manual ore storage is reduced, simultaneously integrative sieve is wholly with well edge parallel arrangement, the downward impact force of falling ore is reduced, the sieve is effectively protected, and the maintenance times are reduced in increase of service life.

Drawings

Fig. 1 is a schematic front view of a conventional drop shaft mouth structure;

fig. 2 is a schematic plan view of a drop shaft structure provided in the present application;

FIG. 3 is a schematic view of the cross-sectional structure of A-A in FIG. 2;

legend description:

1. a first side well edge; 4. a second lateral well edge; 11. installing reinforcing steel bars; 13. supporting I-steel; 3. a wellbore; 12. an integral screen plate; 22. a cross bar of the grid; 21. a grille longitudinal bar; 23. a middle transverse baffle rod.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, based on the embodiments of the utility model, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the utility model.

Technical means which are not described in detail in the application and are not used for solving the technical problems of the application are all arranged according to common general knowledge in the field, and various common general knowledge arrangement modes can be realized.

Referring to fig. 2-3, the drop shaft mouth structure provided by the present application includes an integral screen deck 12 accommodated and disposed in the drop shaft; a middle baffle rod is arranged in the middle of the integrated screen plate 12 to divide the integrated screen plate 12 into a first screen grid area and a second screen grid area; the first screening area replaces a strip screen in the original structure, and a better screening effect can be obtained; the second screen grid area is arranged on the other side of the first screen grid area and is clamped between the drop shaft and the first screen grid area. With the integral screen plate 12 structure, the formation of welded connection points can be avoided.

The integrative sieve 12 holds and sets up in the drop shaft, and drop shaft top surface peripheral parallel and level is in the coplanar, and integrative sieve 12 is parallel with this plane, and integrative sieve 12 is relative drop shaft top surface peripheral subsidence 1m to form ore deposit whereabouts accommodation space in integrative sieve 12 top, avoid not sieving ore outwards to roll off, improve and sieve efficiency, reduce personnel's work load.

The integral screen deck 12 may be mounted within the drop shaft by a mounting assembly, which in particular, in a particular embodiment, comprises: installing a reinforcing steel bar 11 and supporting I-steel 13; the mounting steel bar 11 is made of round steel with phi 32 mm; one end of the round steel is connected with the outer side wall of the integrated screen plate 12, and the other end of the round steel is inserted into the side wall of the drop shaft and is installed through concrete cement casting. The support I-steel 13 is supported and arranged on the bottom surface of the integrated screen plate 12, two ends of the support I-steel extend out of the integrated screen plate 12 and are respectively inserted into opposite side walls of the drop shaft to be installed through concrete casting, the overall structure is high in safety and reliability, and the service life of the drop shaft is effectively prolonged due to the fact that the structure tolerates the impact of ores.

In a specific embodiment, the top edge of the drop shaft is respectively provided with a first side shaft edge 1 and a second side shaft edge 4; the first side well edge 1 and the second side well edge 4 are aligned on the top surface.

In one embodiment, the well bore 3 is positioned below the chute to facilitate ore descent.

The middle crosspiece rod 23 of the integrated screen plate 12 is arranged opposite to the central line of the shaft 3, and the supporting I-steel 13 is arranged opposite to the middle crosspiece rod 23, so that a good supporting effect is realized, and the service life of the structure is prolonged.

In one embodiment, the first screening zone has a lateral length of 1600mm for better screening; the second screening zone has a transverse length of 1140mm. The structure can effectively increase the whole sieving area and improve the sieving efficiency.

The original inclined grid screen (strip screen) is changed into a flat grid screen, the grid screen port specification is optimized, the effective space of the grid screen is increased, and the ore lowering efficiency is improved.

The integral screen deck 12 comprises: a plurality of grid cross bars 22 and grid longitudinal bars 21 arranged in pairs; the grid cross bars 22 and the grid longitudinal bars 21 are connected end to form a rectangular frame, and a plurality of grid cross bars 22 are arranged in the rectangular frame; the grid bars 22 are parallel to each other to form a plurality of grid holes for screening ore.

In a specific embodiment, the inclined bar screen is replaced by a first plane grid screen, the screen bars are made of complete steel, no welding connection points are overlapped, and the grid screen fault rate is reduced. The length of the first flat screen is increased to 1600mm x 700mm, with which the ore classification accuracy can be improved, see fig. 2. The effective space of the grid screen is increased, the ore discharging efficiency is improved, and the overhaul times are reduced.

The structure is used in Yuxi mining Co Ltd:

before transformation: the ore is easy to pile up on the grid screen at the rear end of the strip screen, so that conditions such as reduction of the well head grid screen dropping space, well head blockage, high grid screen fault rate and the like are caused, and the ore discharge effect is poor.

After transformation: optimizing the design and installation mode of the drop shaft mouth grid screen, increasing the effective space of the grid screen, reducing the fault rate of the grid screen and effectively improving the ore dropping effect.

Although the present utility model has been described with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements and changes may be made without departing from the spirit and principles of the present utility model.

Claims

1. The drop shaft mouth structure is characterized in that the peripheral edges of the top surfaces of the drop shafts are arranged on the same plane; comprising the following steps: an integral screen plate; the integral screen plate is accommodated in the drop shaft and is sunken for 1m relative to the periphery of the top surface of the drop shaft;

2. A drop shaft structure according to claim 1, comprising: a mounting assembly; the integrative sieve passes through the installation component and installs in the drop shaft.

3. A drop shaft structure according to claim 2, wherein mounting the rebar assembly comprises: supporting I-steel and a plurality of mounting steel bars; the support I-steel is arranged on the ground of the central area of the integrated sieve plate; two ends of the supporting I-steel extend out of the integrated sieve plate and are connected with the inner side wall of the drop shaft in a mounting way;

4. A drop shaft structure according to claim 1, wherein the drop shaft comprises: a wellbore; the pit shaft is arranged below the integrated sieve plate.

5. A drop shaft structure according to claim 1, wherein the unitary screen panel comprises: the grid longitudinal bars are arranged in pairs; the cross bars of the grid and the longitudinal bars of the grid are connected end to form a rectangular frame.

6. A drop shaft structure according to claim 5, wherein the lateral length of the first screen zone is 1600mm; the second screening zone has a transverse length of 1140mm.

7. A drop shaft structure according to claim 5, wherein the integral screen comprises: a plurality of grid bars; the grid cross bars are parallel to each other, and two ends of the grid cross bars are respectively connected with the grid longitudinal bars; the interval between adjacent grid cross bars is 700mm.

8. A drop shaft structure according to claim 7, wherein the integral screen comprises: a middle cross bar; the middle transverse baffle rod and the grid longitudinal rod are arranged in parallel in the central area of the integrated screen plate to separate the first grid area and the second grid area.