Filling pulping nozzle and filling sand bin pulping system
Technical Field
The application relates to the technical field of mine filling, in particular to a filling pulping nozzle and a filling sand bin pulping system.
Background
In the filling process, most of the mortar needs to be densely dehydrated and stored by taking a vertical sand silo or a thickener as tail mortar, the stored mortar is deposited in a silo body and often has hardening phenomenon, before sand is put and filled, the hardening mortar in the silo body needs to be activated, the main flow mortar making process is a wind-water linkage mortar making process, and wind-water activated mortar is realized by installing a nozzle in a silo inner ring pipeline.
At present, the slurry making nozzles in use are mainly divided into two types, wherein the first slurry making nozzle is used for punching the side wall of a steel pipe, the surface of the first slurry making nozzle is reversely stopped by an elastic sleeve or the nozzle is deformed, the nozzle adopts the elastic rubber sleeve made of rubber as a reversely stopping mechanism, and the service life of the nozzle is not long due to easy aging of the rubber and needs to be frequently replaced. The second kind of slurry making nozzle is to empty inside cylindrical metal material, punch side wall, and to set spring and cylinder or ball inside, to drive the cylinder or ball to move up and down to open or close the water outlet in the side wall.
Disclosure of Invention
Aiming at the defects of the prior art, the application aims to provide a filling slurry-making nozzle and a filling sand silo slurry-making system, which adopt a double-check structure, solve the problems of easy backflow of mortar, easy blocking of spraying holes and the like of the traditional nozzle, and prolong the service life of the nozzle on the basis of ensuring the slurry-making effect.
In order to achieve the above object, the present application is realized by the following technical scheme:
in a first aspect, an embodiment of the present application provides a filling slurry-making nozzle, including a first nozzle, a sleeve, and a second nozzle, an inlet end of the first nozzle being connected to the sleeve, the inlet end forming an outlet end of a strip-shaped cross section through a reducing channel;
the outer side of the first nozzle is coated with an elastic wear-resistant layer, and the wear-resistant layer extends outwards to form an extension section corresponding to the outlet end so as to automatically close or open the outlet end; and a second nozzle which is matched with the first nozzle in shape is fixed in the sleeve.
As a further implementation manner, the second nozzle is integrally connected with the mounting seat away from the outlet end.
As a further implementation manner, the sleeve is internally provided with a bearing step, and the end face of the mounting seat is attached to the surface of the bearing step.
As a further implementation manner, one end of the sleeve away from the first nozzle is connected with a connecting pipe, and the connecting pipe stretches into the sleeve and is fixedly extruded with the bearing step.
As a further implementation, the connection tube communicates with the second nozzle.
As a further implementation, the connection tube is screwed with the sleeve.
As a further implementation mode, the first nozzle adopts a metal material as a framework, the surface of the first nozzle is coated with an elastic wear-resistant layer, and the second nozzle adopts an elastic material.
As a further implementation, the length of the extension section is 5-20 mm.
As a further implementation, the first nozzle is screwed with the sleeve.
In a second aspect, embodiments of the present application also provide a filling sand silo pulping system including the pulping nozzle.
The beneficial effects of the application are as follows:
(1) The first spray head is provided with the outlet end of the strip-shaped gap, the outer side of the first spray head is wrapped with the elastic wear-resistant layer, the first spray head is in a tight closing state when the elasticity of the wear-resistant layer is lower than a certain pressure, the first spray head is forced to open when the pressure is forward, and the first spray head is automatically closed after the pressure is lost, so that mortar in a sand silo is prevented from flowing back, and a nozzle and a wind and water pipeline are prevented from being blocked; and the wear-resisting layer is the whole first nozzle, so that the wear-resisting protection of the nozzle is realized, and the service life of the nozzle is prolonged.
(2) The application is internally provided with the elastic second nozzle, the shape of the second nozzle is adapted to that of the first nozzle, and the second nozzle can be opened and closed according to the forward wind water pressure and is used as a second protection for preventing mortar from flowing back.
(3) The sleeve is internally provided with the bearing step, the second nozzle is attached to the surface of the bearing step through the mounting seat, and the mounting seat is fixed with the sleeve through the connecting pipe, so that the quick replacement and the installation can be realized without adding additional connecting pieces, the service life is prolonged, and meanwhile, the maintenance and replacement time is shortened.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application.
FIG. 1 is a front cross-sectional view of the present application according to one or more embodiments;
FIG. 2 is a side cross-sectional view of the present application according to one or more embodiments;
the device comprises a connecting pipe, a sleeve, a second nozzle, a first nozzle, a wear-resistant layer, a mounting seat and a bearing step, wherein the connecting pipe is arranged at the bottom of the connecting pipe, the sleeve is arranged at the bottom of the connecting pipe, the wear-resistant layer is arranged at the top of the connecting pipe, and the sleeve is arranged at the bottom of the connecting pipe.
Detailed Description
Embodiment one:
the embodiment provides a filling slurry-making nozzle, as shown in fig. 1 and 2, comprising a first nozzle 4, a sleeve 2, a second nozzle 3 and a connecting pipe 1, wherein one end of the sleeve 2 is detachably connected with the first nozzle 4, the other end of the sleeve 2 is detachably connected with the connecting pipe 1, and the second nozzle 3 is arranged in the sleeve 2.
Specifically, the first nozzle 4 is made of a metal material, such as stainless steel, as a nozzle body; one end of the first nozzle 4 is an inlet end, the other end is an outlet end, and the inlet end and the outlet end are communicated through a channel.
Further, the first nozzle 4 is internally provided with a reducing channel, the cross section of the inlet end of the reducing channel is round, and the outlet end of the reducing channel is a strip-shaped gap (the cross section of the reducing channel is rectangular); the inlet end and the outlet end are communicated through the reducing channel to form a flat structure.
In this embodiment, the outer wall of the inlet end of the first nozzle 4 is provided with external threads, and the inlet end is engaged with the internal threads of the inner wall of the sleeve 2 to form a threaded connection. The outside cladding of first nozzle 4 has wearing layer 5, and wearing layer 5 adopts wear-resisting flexible material, for example natural rubber, silica gel etc. specifically can select according to actual requirement.
The wear-resistant layer 5 extends outwards to form an extension section corresponding to the outlet end of the first nozzle 4, the extension section is provided with a gap, the wear-resistant layer 5 is in a tight closing state (the outlet end of the first nozzle 4 is closed) under a certain pressure, the wear-resistant layer is forced to open under the forward (from inside to outside) pressure, and wind and water are ejected out from the strip-shaped gap to form a waterfall, so that the mortar in the bin is impacted and activated; and after the pressure is lost, the mortar is automatically closed, so that the mortar is prevented from flowing backwards.
The length of the extension is 5-20 mm to be able to fully wrap the first nozzle 4 and to withstand sufficient injection pressure and mortar wear. Preferably, the extension length is 10mm.
Further, the inner wall of the sleeve 2 is provided with a receiving step 7, the receiving step 7 is of an annular protruding structure protruding out of the inner wall, the interior of the sleeve 2 is divided into two areas through the receiving step 7, one area is used for being connected with the first spray head 4, and the other area is used for being connected with the connecting pipe 1.
The second nozzle 3 is installed in the sleeve 2, and the axis of the second nozzle 3 coincides with the axis of the first nozzle 4, so that the outlet ends of the two correspond. The shape of the second nozzle 3 is adapted to that of the first nozzle 4, namely, the cross section of the inlet end is circular, the outlet end is a strip-shaped gap, and the inside is a reducing channel.
The material of the second nozzle 3 is different from that of the first nozzle 4, the second nozzle is made of elastic material, the outlet end of the second nozzle 3 is opened when pressure exists, and the second nozzle is automatically closed when the pressure is lost; which cooperates with the first nozzle 4 to form a secondary sand control slurry backflow protection. In this embodiment, the second nozzle 3 is made of natural rubber.
The wear-resistant layer 5 and the second nozzle 3 of the embodiment are integrally formed by adopting natural wear-resistant rubber, have high wear resistance and elasticity, and can realize quick return to original state on the premise of ensuring that the first nozzle 3 is not worn, thereby achieving the effect of closing backflow prevention.
Further, the second nozzle 3 is integrally connected with the mounting seat 6, the second nozzle 3 is fixed at the receiving step 7 in the sleeve 2 through the mounting seat 6, and the second nozzle 3 is located at the inlet side of the first nozzle 4.
In this embodiment, the mounting seat 6 is in a boss shape, and a cavity communicated with the second nozzle 3 is formed inside the mounting seat; the narrow end of the mounting seat 6 is fixed with the second nozzle 3, the end face of the wide end of the mounting seat is attached to the lower surface of the receiving step 7 (the side where the first nozzle 4 is located is taken as the upper side), the mounting seat 6 is fixed with the sleeve 2 through the mounting connecting pipe 1, the mounting seat is convenient to assemble and disassemble, and an additional connecting piece is not needed to be added.
Further, one end of the connecting pipe 1 is provided with external threads to be matched with the internal threads on the inner wall of the sleeve 2; the connecting pipe 1 is screwed into the sleeve 2, and plays a role in fixing the mounting seat 6 and the receiving step 7, and the connecting pipe 1 is communicated with the inside of the second nozzle 3 through the mounting seat 6. The other end of the connecting pipe 1 is used for connecting a wind and water pipeline.
The working principle of the embodiment is as follows:
when the mortar blowing device works, high-pressure water or wind enters the connecting pipe 1 from the water or wind pipeline, wind-water medium firstly enters the second spray head 3, after a certain pressure is reached, the outlet end of the second spray head 3 is forced to open, the wind-water medium enters the reducing channel of the first spray head 4, after a certain pressure is reached, the extending section of the wear-resisting layer 5 is forced to open, and wind-water is ejected out through the strip-shaped gap of the first spray head 4 to impact and activate the mortar in the mortar blowing device.
When the anti-sand mortar backflow protection device stops working, along with the pressure reduction of high-pressure water or wind, the extension section of the wear-resistant layer 5 is automatically closed due to elastic shrinkage, mortar is prevented from flowing back into the variable-diameter channel, and then the outlet end of the second spray head 3 is closed, so that the anti-sand mortar backflow protection is performed for the second time.
Embodiment two:
the embodiment provides a filling sand silo pulping system, which comprises the pulping nozzle in the first embodiment.
The above description is only of the preferred embodiments of the present application and is not intended to limit the present application, but various modifications and variations can be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.