CN211197884U

CN211197884U - Vibration anti-blocking device for pneumatic conveying of concrete mortar

Info

Publication number: CN211197884U
Application number: CN201922035185.0U
Authority: CN
Inventors: 张凯; 高鑫; 谷邱鑫; 陈彦龙; 巨峰
Original assignee: Jiangsu Henghui Energy And Technology Co ltd; China University of Mining and Technology CUMT
Current assignee: Jiangsu Henghui Energy And Technology Co ltd; China University of Mining and Technology CUMT
Priority date: 2019-11-22
Filing date: 2019-11-22
Publication date: 2020-08-07
Anticipated expiration: 2029-11-22

Abstract

The utility model discloses a stifled device is prevented in vibration of pneumatic transport concrete mortar, the device is including defeated material hose, half slot trusteeship, cuff, pneumatic vibrating device, flange, tripod elastic vibration device and extension spring. The cuffs are axially distributed along the material conveying hose, the material conveying hose is fixed in the semicircular groove support pipes, a tripod elastic vibration device is arranged at each cuff, and the stretching spring is used for suspending the semicircular groove support pipes through the tripod elastic vibration devices and the cuffs so as to enlarge the vibration propagation distance and adjust the vibration frequency and amplitude; the two ends of the connecting flange are connected with two semicircular groove support pipes, the upper part of the connecting flange is connected with a pneumatic vibration device, the pneumatic vibration device is connected with a gas pipe and vibrates after high-pressure gas is introduced, and materials adhered to the inner wall of the conveying hose are peeled off under the vibration effect, so that pipe blockage is prevented. The utility model has the advantages that: the propagation distance of the vibration wave is long, so that the laying is convenient; the vibration frequency is adjusted through the rigidity of the spring to enhance the stripping effect of the adhered materials; the vibration of the pneumatic vibration device and the material conveying process are synchronous, so that the real-time pipe blockage prevention can be realized.

Description

Vibration anti-blocking device for pneumatic conveying of concrete mortar

Technical Field

The utility model belongs to the technical field of the technique of conveying mortar concrete and specifically relates to a vibration anti-blocking device of pneumatic transport concrete mortar is related to.

Background

The concrete reinforcement has the effect of light weight in the fields of constructional engineering, mineral engineering, even decoration engineering and the like, cement, sand, stone and the like are mixed in advance by adding water, and the mixture is directly sprayed to a target position after being conveyed for a certain distance, so that the sprayed mortar concrete has high strength and uniform distribution, and the whole equipment has a simple process and is easy to operate. At present, concrete is conveyed by pumping, namely the concrete is conveyed for a certain distance by a conveying cylinder by utilizing hydraulic power, and the method has considerable requirements on precise proportioning of materials and residual cleaning. Therefore, high-pressure gas is generally adopted for conveying materials in the engineering to replace pumping conveying, namely, after concrete is pumped to the initial position of a pipeline, the materials are conveyed out through high-pressure gas. Although the method solves the blockage of the pipeline to a certain degree, the method still faces the problems that: on the one hand, cement has strong adhesive force, cement paste adhered to the pipe wall can be gradually increased in the conveying process, concrete segregation is caused, and on the other hand, after the conveying is finished, the cement paste adhered to the pipe wall is difficult to completely clean under the action of wind pressure.

The frequency of pipe blockage is high, the engineering for cleaning the pipe wall is large, and the problem of pipe blockage in long-distance concrete mortar conveying is urgently solved. Various methods for cleaning pipes and preventing blockage are developed, such as: the accurate proportioning and uniform mixing of materials, the arrangement of an auxiliary compressed air pipeline and the like are researched by researchers, such as a novel mining aerodynamic guniting machine disclosed as CN 204200245U; the mining full pneumatic wet shotcrete machine disclosed in patent publication No. CN 105484770 a is difficult to be implemented due to excessive dependence on the field worker's expertise, ultra-high stability of the equipment, and combination of a plurality of large-scale equipments.

The mechanical vibration dredging method of vibration blanking of a face-beating machine, sand and stone screen vibration filtering and the like is inspired by adopting a tamping to dredge a material conveying pipe in the current engineering, based on the basic condition of high-pressure gas conveying, a good effect is supposed to be achieved if the high-pressure gas conveying and the vibration conveying pipe are combined, because on one hand, when the high-pressure gas conveying is carried out, the smoothly conveyed material in the material conveying pipe is basically in a suspension state, the normal conveying of the part of material is not influenced by the vibration of the pipe wall, and on the other hand, the mechanical properties of the material conveying pipe and concrete mortar (particularly, different rigidity, the deformation degree under the same external force action is more favorable for the stripping of the material adhered to the pipe wall, the stripped material is blown out under the action of the high-pressure gas together with the normally conveyed part of material, so as to prevent the pipe from being blocked, the continuous and smooth conveying is ensured, however, considering that the rigidity of the material conveying pipe is in direct proportion to the propagation distance of the vibration wave and the vibration effect, the vibration effect is in inverse proportion to the vibration effect, the vibration loss caused by placing the vibration of the vibration on the ground is more favorable for replenishing the material, and the vibration effect of the material is not favorable for greatly reducing the vibration propagation of the vibration, so that the vibration propagation of the vibration, the vibration energy consumption of the vibration of the material, the vibration conveying pipe 3583, the vibration is obviously, and the vibration effect, so that the vibration is obviously, the vibration effect is obviously.

Disclosure of Invention

The technical problem is as follows: the utility model discloses a solve the problem that exists among the prior art, provide one kind and lie in the control when shaking the source number, compromise the distance that the ripples that shakes propagated and the effect that the material was peeled off, guarantee the vibration anti-blocking device of the pneumatic transport concrete mortar of stable, continuous, the unblocked output of material.

The technical scheme is as follows: the utility model discloses a stifled device is prevented in vibration of pneumatic transport concrete mortar, including conveying hose, establish the main air pipe in conveying hose one side, conveying hose bottom be equipped with the multisection half slot trusteeship through welding flange fixed connection, the middle part of multisection half slot trusteeship all is equipped with tripod elastic vibration device on fixed half slot trusteeship and the conveying hose, tripod elastic vibration device between the cartridge have a plurality of pneumatic vibration device of fixing in welding flange position department, main air pipe on be equipped with the bronchus that links to each other with pneumatic vibration device.

The tripod elastic vibration device comprises a triangular support, a hoop bolt and an extension spring, wherein the triangular support is spanned on the conveying hose, the hoop is buckled on the semicircular groove support pipe and the conveying hose and fixed by the hoop bolt, the upper end of the extension spring is fixed at the top of the triangular support, and the lower end of the extension spring is fixed on a rod of the hoop bolt.

The pneumatic vibration device comprises a pneumatic vibrator, a vibrator base, a connecting flange and a connecting flange tray; the connecting flange is of an annular structure with two semi-circles buckled, the two semi-circles of the annular structure are respectively provided with two semi-circular discs butted into a connecting flange tray, the pneumatic vibrator is fixed on the connecting flange tray through a vibrator base, and the lower semi-circular end face of the annular structure of the connecting flange is provided with a plurality of bolt fixing holes along the axial direction and is matched with a welding flange hole welded on a semi-circular groove support pipe.

Has the advantages that: the utility model discloses when the control source number that shakes, compromise the distance that the ripples of shaking propagated and the effect that the material was peeled off, guarantee that the material is stable, continuous, unblocked output, prevent stifled effectual, the advantage compared with prior art lies in:

1) the vibration wave propagation distance is far away and is convenient for laying: because the adoption vibration dredging pipe must consider the problem that vibration propagation distance and transmission effect are restricted, need increase the vibrator naturally to reach the purpose of vibration dredging pipe, lead to that the installation is wasted time and energy, and use and maintenance cost increase in succession. The utility model discloses use the semicircular groove towing pipe to drag defeated material hose to consolidate with the cuff and make hose and hard tube closely laminate, the pipeline advantage that two kinds of rigidity are different is complementary, and the hose does benefit to and promotes the vibration effect, and the hard tube is favorable to promoting vibration propagation distance, and the propagation distance of vibration wave increases under the single focus, can cover vibration scope wider, and the vibrator of required installation is convenient for install and lays, cost reduction.

2) The vibration frequency is adjusted through the spring stiffness to enhance the stripping effect of the adhered materials: when the frequency and amplitude of the vibration are determined, the whole conveying pipe tends to be in a steady state, and partial adhered materials cannot be peeled off. The utility model discloses a tripod elastic vibration device with extension spring hangs the conveying pipeline, the conveying pipeline of suspension can be to arbitrary direction motion, the conveying pipeline of different sections is at the vibration frequency of different moments when receiving the vibration, vibration range and vibration direction are all different, the effect of vibration effect is adjusted to performance extension spring rigidity, but the adjustable vibration range of tripod elastic vibration device and the frequency that have extension spring, unlike direct adjustment vibration source vibration parameter carving board, just it is its nondeterminacy just more be favorable to breaking the "steady state" of pipeline, thereby be favorable to strengthening the effect that the adhesion material was peeled off.

3) The vibration of the pneumatic vibration device and the material conveying process can realize real-time pipe blockage prevention in synchronization: when the traditional sand blasting pipe is blocked, the blocking position is determined and dredged by adopting a manual ramming method, the dredging effect is poor, the pipeline is required to be detached frequently, and normal guniting is influenced. The pneumatic vibrating device that this design used communicates behind the trachea, receives the high-pressure gas effect of continuous output to last the vibration, and the material is carried and is dredged the synchronous going on with the vibration, in case the pipe wall has the material adhesion, just begins to peel off by the vibration effect, prevents to glue the material of wall and piles up, prevents in real time stifled pipe.

Drawings

FIG. 1 is a schematic structural view of the vibration anti-blocking device for pneumatic conveying of concrete mortar of the present invention.

Fig. 2 is a schematic view of a local structure of the connection flange of the present invention.

Fig. 3 is a schematic view of the local structure of the tripod elastic vibration device of the present invention.

In the figure: the device comprises a bronchus-1, a main gas pipe-2, an extension spring-3, a vibrator-4, a triangular bracket-5, a connecting flange-6, a hoop-7, a semicircular groove support pipe-8, a conveying hose-9, a vibrator base-10, a connecting flange tray-11, a welding flange-12 and a hoop bolt-13.

Detailed Description

The invention will be further described with reference to the following examples in which:

as shown in fig. 1, 2 and 3, the vibration anti-blocking device for pneumatic conveying of concrete mortar of the present invention mainly comprises a branch pipe 1, a main gas pipe 2, a pneumatic vibration device, a tripod elastic vibration device, a semicircular groove support pipe 8, a conveying hose 9 and a vibrator base 10; the bottom of the material conveying hose 9 is provided with a plurality of sections of semicircular groove supporting pipes 8 which are fixedly connected through a welding flange 12, the middle parts of the sections of semicircular groove supporting pipes 8 are respectively provided with a tripod elastic vibration device for fixing the semicircular groove supporting pipes and the material conveying hose, a plurality of pneumatic vibration devices fixed at the position of the welding flange 12 are inserted between the tripod elastic vibration devices, and the main air pipe 2 is provided with a branch air pipe 1 connected with the pneumatic vibration devices. The elastic vibration device for the tripod comprises a triangular support 5, a hoop 7, a hoop bolt 13 and an extension spring 3, wherein the triangular support 5 is spanned on a material conveying hose, the hoop 7 is buckled on a semicircular groove support pipe and the material conveying hose and is fixed by the hoop bolt 13, the upper end of the extension spring 3 is fixed at the top of the triangular support, and the lower end of the extension spring is fixed on a rod of the hoop bolt 13. The pneumatic vibration device comprises a pneumatic vibrator 4, a vibrator base 10, a connecting flange 6 and a connecting flange tray 11; the connecting flange 6 is of an annular structure with two semicircular buckles, two semicircular discs butted to form a connecting flange tray 11 are arranged on two semicircular circles of the annular structure respectively, the pneumatic vibrator 4 is fixed on the connecting flange tray 11 through a vibrator base 10, and a plurality of bolt fixing holes are formed in the end face of the semicircular ring under the annular structure of the connecting flange 6 along the axial direction and are matched with holes formed in a welding flange 12 welded on a semicircular groove supporting pipe 8.

The delivery hose 10 utilizes high-pressure gas to deliver concrete mortar materials; the semi-circular groove towing pipe 9 has better rigidity, the single length is moderate, the transportation and the assembly are convenient, the inner diameter is slightly larger than the outer diameter of the material conveying hose 9, and the hose can just fall into the circular groove and be jointed; the hoop 7 is distributed along the axial direction of the material conveying pipe, the material conveying hose 9 is fixed in the semicircular groove support pipe 8, and each semicircular groove support pipe 8 is connected through the connecting flange 6; the cuffs 7 are distributed along the axial direction of the material conveying pipeline and are sleeved on the material conveying pipeline from bottom to top so as to lift the joint of the semicircular groove supporting pipe 8 and the material conveying hose 9; the pneumatic vibration device 4 is connected to the branch air pipe 1 through the main air pipe 2 and vibrates after high-pressure air is introduced, the high-pressure air is distributed on the conveying hose 9 at equal intervals along the axial direction, materials adhered to the inner wall of the hose 9 are peeled off under the vibration effect, and the pneumatic vibration device 4 can synchronously vibrate with the conveying process of the conveying hose 9 to prevent pipe blockage in real time.

The upper part of the connecting flange 6 is connected with a pneumatic vibration device 4, and two sides of the connecting flange are connected with two semicircular groove supporting pipes 8 through welding flanges 12. Lay defeated material hose 9 earlier to the recess of half slot towing pipe 8, dock flange 6 again and put into the centre of the welded flange 12 of half slot towing pipe 8 tip according to the screw hole position, aim at tray 11 with pneumatic vibration device 4's base 10 again, insert the screw in all screw holes and tighten with the nut, half slot towing pipe 8 and defeated material hose 9 constitute a whole, the vibration wave that produces when being favorable to vibrator 4 vibration is propagated at defeated material hose 9, the propagation distance of the vibration wave that a vibrator 4 provided increases, can cover the vibration scope wider, the use that reduces vibrator 4 is convenient for lay.

The vibration frequency is adjusted through the spring stiffness to enhance the stripping effect of the adhered materials: the tripod elastic vibration device 5 is axially distributed along the material conveying hose 9, a vertical downward extension spring 3 is arranged on the top surface of each support, a screw rod 13 inserted in advance in the upper portion of a hoop 7 is hooked by the bottom end of the extension spring 3, so that the whole system is suspended and fixed on a ground plane under the action of the tripod elastic vibration device 5, the material conveying hose 9 can move in any direction, and therefore the same position of the inner wall of the material conveying hose 9 has different vibration amplitudes and vibration frequencies at different moments during vibration, and the peeling effect of adhesive materials is enhanced.

Claims

1. The utility model provides a stifled device is prevented in vibration of pneumatic transport concrete mortar, includes defeated material hose (9), establishes main trachea (2) in defeated material hose (9) one side, its characterized in that: conveying hose (9) bottom be equipped with multisection half slot trusteeship (8) through welding flange (12) fixed connection, the middle part of multisection half slot trusteeship (8) all is equipped with the tripod elastic vibration device on fixed half slot trusteeship and the conveying hose, tripod elastic vibration device between the cartridge have a plurality of pneumatic vibration device of fixing in welding flange (12) position department, main trachea (2) on be equipped with bronchus (1) that link to each other with pneumatic vibration device.

2. The vibration anti-blocking device for pneumatically conveying concrete mortar of claim 1, wherein: the elastic vibration device for the tripod comprises a triangular support (5), a hoop (7), a hoop bolt (13) and an extension spring (3), wherein the triangular support (5) straddles on a material conveying hose, the hoop (7) is buckled on a semicircular groove support pipe and the material conveying hose and fixed by the hoop bolt (13), the upper end of the extension spring (3) is fixed to the top of the triangular support, and the lower end of the extension spring is fixed to a rod of the hoop bolt (13).

3. The vibration anti-blocking device for pneumatically conveying concrete mortar of claim 1, wherein: the pneumatic vibration device comprises a pneumatic vibrator (4), a vibrator base (10), a connecting flange (6) and a connecting flange tray (11); connecting flange (6) be the annular structure of two semicircle buttons, be equipped with two semicircular disks that dock into connecting flange tray (11) on two semicircles of annular structure respectively, pneumatic vibrator (4) fix on connecting flange tray (11) through vibrator base (10), the semicircular ring terminal surface is opened along the axial under the annular structure of connecting flange (6) has a plurality of bolt fastening holes, with welding flange (12) trompil phase-match on semicircular groove trusteeship (8).