CN115538781A

CN115538781A - Conveying pipeline system and conveying method suitable for cement solidified soil

Info

Publication number: CN115538781A
Application number: CN202211179488.XA
Authority: CN
Inventors: 王占彬; 周源; 吴勇信; 代登辉
Original assignee: Nanjing Communications Institute of Technology
Current assignee: Nanjing Communications Institute of Technology
Priority date: 2022-09-27
Filing date: 2022-09-27
Publication date: 2022-12-30

Abstract

The invention discloses a conveying pipeline system suitable for cement solidified soil, which comprises a plurality of groups of linear conveying units for linear path transmission, wherein two adjacent groups of linear conveying units are communicated through a conveying hose; the linear conveying unit comprises two groups of sleeve supports which are arranged oppositely and a rotating sleeve which is rotatably arranged between the sleeve supports, and helical blades are arranged on the inner wall of the rotating sleeve along the axial direction; and a driving mechanism for driving the rotary sleeve to rotate is arranged outside the rotary sleeve. The invention has compact structure and convenient use, can be arranged along a preset path, and reduces the limitation of working space; in the conveying process of the material to be conveyed, the continuous extrusion and stirring of the conveyed material can be kept, the flow characteristic of the conveyed material is kept, and the conveying efficiency is improved; the risk of blocking the conveying pipeline is reduced, and the working strength of workers in dredging is reduced.

Description

Conveying pipeline system and conveying method suitable for cement solidified soil

Technical Field

The invention relates to a semi-solidified fluid conveying system, in particular to a conveying pipeline system and a conveying method suitable for cement solidified soil.

Background

In urban construction, rapid fill-hardening of lightweight is often requiredIf the filling material can be backfilled by using the spoil on the construction site, the filling material is more economic and environment-friendly, so a cement-based curing agent is usually adopted as an additive to mix the bad spoil on the site to manufacture the filling material. The cement solidified soil is a waste solidification treatment method, and is also a method for harmless and stable treatment of hazardous waste. The cement is an inorganic cementing material, water is added to generate hydration reaction, and a hard cement block is formed after the reaction. The cement solidification method is commonly used for solidifying sludge containing harmful substances, cement reacts with water in the sludge to generate gelation, sludge particles containing the harmful substances are respectively coated and gradually hardened, and the structure of a solidified body is mainly 3 CaO. SiO. Generated in the hydration reaction of the cement ₂ Fine particles of sludge are enclosed between crystals, and thus even if the solidified body is broken or crushed and immersed in water, the leachability of harmful substances can be reduced.

The cement solidified soil is usually subjected to abandoned soil recycling at a construction site, is subjected to solidification treatment at a filling site, is doped with a cement-based solidifying agent and is stirred at the site, is limited by site topography and construction space, and is easy to harden, coagulate or delaminate during conveying, so that conveying pipelines are blocked or filling quality is reduced.

Disclosure of Invention

The purpose of the invention is as follows: the invention aims to provide a conveying pipeline system capable of stirring and conveying materials to be conveyed, so that the materials to be conveyed have good flowing performance, and the conveying efficiency is improved.

The technical scheme is as follows: the conveying pipeline system suitable for the cement solidified soil comprises a plurality of groups of linear conveying units for linear path transmission, wherein two adjacent groups of linear conveying units are communicated through a conveying hose; the linear conveying unit comprises two groups of sleeve supports which are oppositely arranged and a rotating sleeve which is rotatably arranged between the sleeve supports, and helical blades are arranged on the inner wall of the rotating sleeve along the axial direction; and a driving mechanism for driving the rotating sleeve to rotate is arranged outside the rotating sleeve.

Preferably, the outer walls of the two ends of the rotating sleeve are respectively provided with a convex ring, the outer side of each convex ring is provided with an annular step, and a conical bearing is clamped on each annular step; the sleeve support comprises a fixed pressing ring tightly pressed on the circumference of the conical bearing, and a first clamping ring and a second clamping ring which are clamped at two ends of the conical bearing are arranged on two sides of the fixed pressing ring respectively.

Preferably, the inner side of the second clamping ring is provided with an installation turning edge corresponding to the inner ring of the rotating sleeve, and a ball bearing is arranged between the outer wall of the installation turning edge and the inner wall of the rotating sleeve.

Preferably, the conveying pipeline system further comprises a plurality of groups of turning conveying units for turning path transmission, and the turning conveying units are communicated with the turning conveying units or the linear conveying units through conveying hoses.

Preferably, the turning conveying unit comprises a conveying pump shell, and an inlet end and an outlet end are correspondingly arranged at two ends of the conveying pump shell; the conveying pump is characterized in that a flexible conveying cavity and a power cavity divided by the flexible conveying cavity are arranged in the conveying pump shell, the flexible conveying cavity is communicated with the inlet end and the outlet end respectively, a driving cam is arranged in the power cavity in a rotating mode, and the driving cam extrudes and drives materials to be output along the flexible conveying cavity.

Preferably, the drive cam includes at least 1 set of eccentric protrusions arranged along a circumference of the drive shaft.

Preferably, the driving mechanism comprises a supporting ring arranged on the outer wall of the rotary sleeve, and a transmission gear ring is arranged on the periphery of the supporting ring; and the driving gear is meshed with the transmission gear ring and is arranged at the front end of the driving motor through a driving shaft.

Preferably, the conveying hose is a corrugated connecting hose or a steel wire plastic hose.

A conveying method for cement solidified soil, which adopts the conveying pipeline system of the embodiment of the application, comprises the following steps:

step 1: according to construction road conditions and conveying distances of a construction site, turning conveying units are arranged at turning positions or high-low fluctuating positions, a plurality of groups of linear conveying units are arranged at intervals on a long linear conveying section, and conveying hoses are adopted to be respectively connected with the turning conveying units or the linear conveying units;

step 2: mixing the cement solidified soil in a mixing station, and starting a delivery pump to start delivery of the cement solidified soil;

and 3, step 3: a driving motor matched with the linear conveying unit and the turning conveying unit is started synchronously in the step 2 to provide internal driving force for the conveying pipeline system;

and 4, step 4: and after the primary pouring is finished, pouring clear water into the conveying pump to clean the conveying pipeline system, and finishing the cleaning for later use.

Has the beneficial effects that: compared with the prior art, the invention has the following outstanding advantages: 1. the structure is compact, the use is convenient, the device can be arranged along a preset path, and the working space limitation is reduced; 2. in the conveying process of the material to be conveyed, the continuous extrusion and stirring of the conveyed material can be kept, the flow characteristic of the conveyed material is kept, and the conveying efficiency is improved; 3. the risk of blocking the conveying pipeline is reduced, and the working strength of workers in dredging is reduced.

Drawings

FIG. 1 is a schematic structural diagram of a delivery line system according to the present invention;

FIG. 2 is a schematic view of the line type conveying unit shown in FIG. 1;

FIG. 3 is a cross-sectional view taken at A in FIG. 2;

FIG. 4 is a schematic diagram of the internal structure of the first embodiment of the turn conveying unit in FIG. 1;

FIG. 5 is a schematic view of the internal structure of a second embodiment of the turn conveying unit in FIG. 1;

fig. 6 is a schematic view of the internal structure of a third embodiment of the turn conveying unit in fig. 1.

Reference numerals:

100. a delivery conduit system;

1. a linear conveying unit; 101. a sleeve support; 102. rotating the sleeve; 103. a helical blade; 104. a support ring; 105. a transmission gear ring; 106. a drive gear; 107. a drive shaft; 108. a drive motor; 109. a convex ring; 110. a first collar; 111. a first clamping step; 112. a tapered bearing; 113. fixing a pressing ring; 114. a second clamping step; 115. a second collar; 116. fixing the counter bore; 117. a ball bearing; 118. installing a turned edge; 119. an annular step; 120. a clamp spring;

2. a delivery hose;

3. a turning conveying unit; 301. a delivery pump housing; 302. a power cavity; 303. a flexible conveying cavity; 304. a drive cam; 305. an inlet end; 306. and an outlet end.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to fig. 1 to 6 of the embodiments of the present invention. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the invention, are within the scope of the invention.

Referring to fig. 1, in the conveying pipeline system for cement-solidified soil of the present invention, the conveying pipeline system 100 includes a turning conveying unit 3 disposed at a turning position or a height fluctuation position according to a construction road condition and a conveying distance of a construction site, a plurality of linear conveying units 1 disposed at equal intervals in a long linear conveying section, and a conveying hose 2 connecting the turning conveying unit 3 and the linear conveying units 1 to form a conveying pipeline.

As shown in fig. 2 and 3, the linear transport unit 1 includes two sets of oppositely disposed sleeve holders 101 and a rotary sleeve 102 rotatably disposed between the sleeve holders 101. Specifically, the outer walls of the two ends of the rotating sleeve 102 are respectively provided with a convex ring 109, the rotating sleeve 102 is further provided with an annular step 119 outside the convex ring 109, and the annular step 119 is clamped with the conical bearing 112. The sleeve support 101 comprises a first clamping ring 110, a fixed pressing ring 113 and a second clamping ring 115, a first clamping step 111 is arranged on an inner ring of the first clamping ring 110 corresponding to the convex ring 109, and the first clamping ring 110 is sleeved on the circumferential direction of the convex ring 109 through the first clamping step 111; a second clamping step 114 is arranged on the inner ring of the fixed pressing ring 113, the inner diameter of the second clamping step 114 is larger than the outer diameter of the conical bearing 112, the conical bearing 112 is clamped on the annular step 119 through a clamping spring 120, and the fixed pressing ring 113 is clamped on the peripheries of the conical bearing 112 and the clamping spring 120 through the second clamping step 114; the inner side of the second clamping ring 115 is provided with an installation turned edge 118 corresponding to the inner ring of the rotating sleeve 102, and a ball bearing 117 is arranged between the outer wall of the installation turned edge 118 and the inner wall of the rotating sleeve 102. The outer sides of the circumferences of the first clamping ring 110, the fixed pressing ring 113 and the second clamping ring 115 are correspondingly provided with fixed counterbores 116, the fixed counterbores 116 are threaded counterbores, and the first clamping ring 110 and the second clamping ring 115 are fixedly connected with the fixed pressing ring 113 through fixing screws arranged in the circumferential direction. The rotating sleeve 102 is rotationally coupled to the sleeve holder 101 by means of a conical bearing 112 and a ball bearing 117.

Referring to fig. 2, the inner wall of the rotating sleeve 102 is provided with a helical blade 103 along the axial direction, a driving mechanism for driving the rotating sleeve to rotate is arranged outside the rotating sleeve 102, and in the process that the driving mechanism drives the rotating sleeve to rotate, the helical blade in the rotating sleeve 102 can convey and stir the cement-cured soil, so that the curing of the cement-cured soil is slowed down, and the fluidity of the cement-cured soil is maintained. The driving mechanism comprises a supporting ring 104 arranged on the outer wall of the rotating sleeve 102, a transmission gear ring 105 is arranged on the periphery of the supporting ring 104, a driving gear 106 is meshed with the transmission gear ring 105, the driving gear 106 is arranged at the front end of a driving motor 108 through a driving shaft 107, the driving motor drives the transmission gear ring 105 to rotate through the driving gear, the rotating sleeve can be driven to rotate, and stirring and conveying of cement solidified soil are achieved.

The turning conveying unit 3 comprises a conveying pump shell 301, wherein two ends of the conveying pump shell 301 are correspondingly provided with an inlet end 305 and an outlet end 306; a flexible conveying cavity 303 respectively communicated with the inlet end 305 and the outlet end 306 and a power cavity 302 divided by the flexible conveying cavity 303 are arranged in the conveying pump shell 301, a driving cam 304 is rotationally arranged in the power cavity 302, and the driving cam 304 extrudes and drives materials to be output from the inlet end 305 to the outlet end 306 along the interior of the flexible conveying cavity 303. The flexible conveying cavity 303 can be made of a high-strength and wear-resistant plastic material or a flexible sleeve bag made of a fiber material, an inlet of the flexible sleeve bag is communicated with an inlet end 305 of a conveying pump shell, an outlet end of the flexible sleeve bag is communicated with an outlet end 306 of the conveying pump shell, when the flexible conveying cavity works, in the periodic rotating process of the driving cam 304, the driving cam 304 periodically extrudes the flexible conveying cavity 303 along an eccentric bulge arranged on the circumference of the driving shaft, so that the cement solidified soil can be extruded from one end of the flexible sleeve bag to the other end of the flexible sleeve bag, in the process, the cement solidified soil can be extruded and kneaded, the flowing performance of the cement solidified soil can be kept, and the cement solidified soil is prevented from being solidified and coagulated in the conveying process.

As shown in fig. 4 and 5, the driving cam 304 includes 3 sets of eccentric protrusions arranged along the circumference of the driving shaft, and a recess is formed between adjacent eccentric protrusions, and the recess preferably has a smooth transition structure to meet the driving requirement of the flexible conveying chamber.

As shown in connection with fig. 6, the drive cam 304 may be provided with 2 sets of eccentric protrusions along the circumference of the drive shaft. The number of the eccentric protrusions can also be 1 group, 4 groups or even more groups which are eccentrically arranged, and the number of the eccentric protrusions is reasonably arranged according to requirements.

The conveying hose 2 can be a corrugated connecting hose or a steel wire plastic hose, and a high-strength and wear-resistant conveying hose is preferably adopted to meet the conveying requirement of the cement solidified soil. The two ends of the conveying hose are respectively provided with a connecting flange which is connected with the flanges at the inlet end and the outlet end of the conveying pump shell in a sealing way through the flanges, or connected with the second clamping ring 115 of the sleeve support through a fixing screw. Other modes such as pipe hoop and the like can be adopted to realize sealing connection without limitation.

According to the working method, the conveying pipeline system 100 of the embodiment of the invention is adopted, firstly, according to the construction road condition and the conveying distance of a construction site, the turning conveying unit 3 is arranged at a turning position or a height fluctuation position, a plurality of groups of linear conveying units 1 are arranged at intervals on a long linear conveying section, and the turning conveying unit 3 and the linear conveying units 1 are sequentially connected into a communicated conveying pipeline by adopting the conveying hose 2. Secondly, cement solidified soil mixing is completed in the mixing station, a conveying pump is started to start cement solidified soil conveying, the linear conveying unit 1 and the turning conveying unit 3 are synchronously started to be matched with the driving motors, and the rotary sleeve and the driving cam start to rotate successively to provide internal driving force for the conveying pipeline system 100. And finally, after the primary pouring is finished, pouring clear water into the conveying pump to clean the conveying pipeline system, and cleaning for later use.

The foregoing is a preferred embodiment of the present invention, and it should be noted that it would be apparent to those skilled in the art that various modifications and enhancements can be made without departing from the principles of the invention, and such modifications and enhancements are also considered to be within the scope of the invention.

Claims

1. The conveying pipeline system suitable for the cement solidified soil is characterized in that the conveying pipeline system (100) comprises a plurality of groups of linear conveying units (1) for linear path transmission, and two adjacent groups of linear conveying units (1) are communicated through conveying hoses (2); the linear conveying unit (1) comprises two groups of sleeve supports (101) which are arranged oppositely and a rotating sleeve (102) which is rotatably arranged between the sleeve supports (101), and helical blades (103) are arranged on the inner wall of the rotating sleeve (102) along the axial direction; and a driving mechanism for driving the rotating sleeve to rotate is arranged outside the rotating sleeve (202).

2. The conveying pipeline system suitable for the cement solidified soil as claimed in claim 1, characterized in that the outer walls of the two ends of the rotating sleeve (102) are respectively provided with a convex ring (109), the outer side of the convex ring (109) is provided with an annular step (119), and the annular step (119) is clamped with a conical bearing (112); the sleeve support (101) comprises a fixed pressing ring (113) tightly pressed on the circumference of the conical bearing (112), and a first clamping ring (110) and a second clamping ring (115) which are clamped at two ends of the conical bearing (112) are arranged on two sides of the fixed pressing ring (113) respectively.

3. The system of claim 2, wherein the second collar (115) is provided with an installation flange (118) inside corresponding to the inner ring of the rotating sleeve (102), and a ball bearing (117) is arranged between the outer wall of the installation flange (118) and the inner wall of the rotating sleeve (102).

4. The conveying pipeline system suitable for cement solidified soil according to claim 1, characterized in that the conveying pipeline system (100) further comprises a plurality of groups of turning conveying units (3) for turning path transmission, and the turning conveying units (3) are communicated with the turning conveying units (3) or the linear conveying units (1) through conveying hoses (2).

5. The conveying pipeline system suitable for cement solidified soil according to claim 4, characterized in that the turning conveying unit (3) comprises a conveying pump shell (301), and the two ends of the conveying pump shell (301) are respectively provided with an inlet end (305) and an outlet end (306); the conveying pump is characterized in that a flexible conveying cavity (303) communicated with the inlet end (305) and the outlet end (306) and a power cavity (302) divided by the flexible conveying cavity (303) are arranged in the conveying pump shell (301), a driving cam (304) is rotationally arranged in the power cavity (302), and the driving cam (304) extrudes and drives materials to be output along the flexible conveying cavity (303).

6. The system of claim 5, wherein the drive cam (304) comprises at least 1 set of eccentric lobes disposed along a circumference of the drive shaft.

7. The conveying pipeline system suitable for cement solidified soil according to claim 1, characterized in that the driving mechanism comprises a rotating sleeve (102) provided with a supporting ring (104) on the outer wall, and the supporting ring (104) is provided with a transmission gear ring (105) on the periphery; and a driving gear (106) is meshed with the transmission gear ring (105), and the driving gear (106) is arranged at the front end of a driving motor (108) through a driving shaft (107).

8. The conveying piping system for cement-cured soil as set forth in claim 1, wherein said conveying hose (2) is a corrugated connecting hose or a steel wire plastic hose.

9. A method for conveying cement-cured soil, using a conveying pipe system (100) according to any one of claims 1 to 8, characterized by comprising the steps of:

step 1: according to construction road conditions and conveying distances of a construction site, turning conveying units (3) are arranged at turning positions or high-low fluctuating positions, a plurality of groups of linear conveying units (1) are arranged at intervals on a long linear conveying section, and conveying hoses (2) are adopted to be respectively connected with the turning conveying units (3) or the linear conveying units (1);

and 2, step: mixing the cement solidified soil in a mixing station, and starting a delivery pump to start delivery of the cement solidified soil;

and step 3: synchronously starting a driving motor matched with the linear conveying unit (1) and the turning conveying unit (3) in the step 2 to provide internal driving force for the conveying pipeline system (100);