CN111300286A - Dry abrasive feeding device capable of clearing blockage - Google Patents
Dry abrasive feeding device capable of clearing blockage Download PDFInfo
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- CN111300286A CN111300286A CN201811001149.6A CN201811001149A CN111300286A CN 111300286 A CN111300286 A CN 111300286A CN 201811001149 A CN201811001149 A CN 201811001149A CN 111300286 A CN111300286 A CN 111300286A
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- Prior art keywords
- valve
- sand
- outlet
- abrasive
- transition box
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C7/00—Equipment for feeding abrasive material; Controlling the flowability, constitution, or other physical characteristics of abrasive blasts
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C7/00—Equipment for feeding abrasive material; Controlling the flowability, constitution, or other physical characteristics of abrasive blasts
- B24C7/0007—Equipment for feeding abrasive material; Controlling the flowability, constitution, or other physical characteristics of abrasive blasts the abrasive material being fed in a liquid carrier
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C7/00—Equipment for feeding abrasive material; Controlling the flowability, constitution, or other physical characteristics of abrasive blasts
- B24C7/0007—Equipment for feeding abrasive material; Controlling the flowability, constitution, or other physical characteristics of abrasive blasts the abrasive material being fed in a liquid carrier
- B24C7/003—Equipment for feeding abrasive material; Controlling the flowability, constitution, or other physical characteristics of abrasive blasts the abrasive material being fed in a liquid carrier with means for preventing clogging of the equipment
Abstract
The invention belongs to the technical field of abrasive jet flow, and particularly relates to a dry abrasive feeding device capable of clearing blockage. The device comprises a sand adding box and a transition box, wherein the transition box is arranged on the lower side of an abrasive outlet of the sand adding box; the device also comprises a second outlet control mechanism which is arranged at the discharge port of the transition box and has a blockage clearing function. The invention successfully solves the problems of unstable dry abrasive conveying and supplying, easy blockage, uneven concentration and the like in the abrasive jet flow surface pretreatment production process by the arrangement and mutual matching of the transition box and the second outlet control mechanism, can carry out remote control on various functions, has an original pressure conveying process and transition box design, and ensures the stability and uniformity of abrasive supply; the invention also has the functions of self-dredging and anti-blocking of the abrasive material supply pipeline, and can replace the traditional conveying mode and process.
Description
The invention is a divisional application, the application date of the original application is 2016, 8 and 30, the application number is 201610778979.4, and the name is a dry grinding material feeding device.
Technical Field
The invention belongs to the technical field of abrasive jet flow, and particularly relates to a dry abrasive feeding device capable of clearing blockage.
Background
The abrasive is an indispensable working medium for the abrasive jet flow surface pretreatment process, the traditional dry abrasive supply mode is that a sand valve and a sand outlet are directly installed below a sand adding box, a sand suction pipe is directly connected with the sand outlet, and due to the difference of the material level of the sand box from beginning to end and the change of the resistance of the sand suction pipeline, the defects of uneven sand supply, easy blockage of an outlet, difficult maintenance of a system and the like often exist, so that the abrasive jet flow surface pretreatment process always has the defects of uneven operation effect, difficult maintenance and the like.
Disclosure of Invention
According to the problems in the prior art, the invention provides a set of brand-new dry abrasive feeding device, which can realize stable, uniform and continuous sand supply and has the functions of self-dredging and anti-blocking of an abrasive feeding pipeline.
In order to solve the problems, the invention adopts the following technical scheme:
a dry abrasive feeding device capable of clearing blockage comprises a sand adding box and a transition box, wherein the transition box is arranged on the lower side of an abrasive outlet of the sand adding box; the device also comprises a second outlet control mechanism which is arranged at the discharge port of the transition box and has a blockage clearing function;
the second outlet control mechanism comprises a sand supply valve arranged at the discharge outlet of the transition box, the sand supply valve comprises an arc-shaped valve plate and a third driving mechanism, and the third driving mechanism is connected with the arc-shaped valve plate and can drive the arc-shaped valve plate to move so as to control the opening and closing of the discharge outlet of the transition box; the device also comprises an electrical control system, wherein the third driving mechanism is electrically connected with the electrical control system;
the second outlet control mechanism also comprises an outlet control valve and a tee joint; the outlet control valve comprises a valve body, a valve core, a rotating needle, a first driving mechanism, a valve seat and a second driving mechanism; the valve body is provided with a sand sucking port corresponding to the discharge port of the transition box, and the discharge port of the valve body is connected with the feed port of the tee joint; the valve core and the valve seat are both arranged in the valve body, and the central axis of the valve core is superposed with the central axis of the three-way feed inlet; the rotary needle is fixedly arranged on the valve core and extends out of the head end of the valve core, the rotary needle extends into the three-way feed inlet, the first driving mechanism is arranged at one end of the valve core, which is far away from the rotary needle, the first driving mechanism is connected with the valve core and can drive the valve core and the rotary needle to rotate around the axial direction of the valve core and the rotary needle; the second driving mechanism is connected with the first driving mechanism and can drive the first driving mechanism, the valve core and the rotating needle to move along the axial direction so that the valve core presses the sealing surface of the valve seat to close the outlet control valve; the discharge port of the tee is connected with the conveying pipeline, and the dredging port of the tee is connected with the cleaning dredging pipeline.
Preferably, the area of the upper opening of the transition box is larger than the area of the abrasive outlet of the cope box, and the upper opening of the transition box is of an open design or is provided with an air-permeable cover plate, and the abrasive outlet of the cope box extends into the upper opening of the transition box to a depth of at least 50 mm.
Preferably, the second outlet control mechanism further comprises a sand supply tee joint arranged on the lower side of the sand supply valve, one end of the sand supply tee joint is provided with a sand suction port, one end of the sand supply tee joint is connected with the compressed air dredging pipeline, and the other end of the sand supply tee joint is arranged as a sand outlet.
Preferably, the first driving mechanism is a motor, the second driving mechanism is a bidirectional cylinder, and the first driving mechanism, the second driving mechanism and the electric control system are electrically or electrically connected.
Preferably, the conveying pipeline is a transparent rubber pipe; the valve core is a conical valve core, and the shape of the conical surface of the head of the valve core is matched with the shape of the inclined plane of the valve seat.
Preferably, the cleaning and dredging pipeline is an air pressure pipeline, a stop valve is arranged on a pipeline connecting the air pressure pipeline and a three-way dredging port in the second outlet control mechanism, and an inlet end of the air pressure pipeline is connected with compressed air; the stop valve is electrically connected with the electric control system.
Preferably, the transition box is provided with one or more transition box discharge ports, and a second outlet control mechanism is arranged at each transition box discharge port.
The invention has the beneficial effects that:
1) the transition box is arranged at the lower part of the sand adding box, and is one of the core components of the conveying and supplying device. The transition box is provided with an open upper part or an air-permeable cover plate, and the area of the upper opening of the transition box is larger than that of the abrasive outlet of the sandbox, so that after the abrasive outlet of the sandbox is inserted into the upper opening of the transition box to enable the boxes of the sandbox and the sandbox to be communicated with each other, a part of the upper opening of the transition box is directly communicated with the atmosphere. Due to the unique transition structure design and the inherent characteristic of abrasive flow, when the abrasive outlet of the sand adding box extends into the upper opening of the transition box to reach a certain depth (generally more than 50 mm), as long as the material level in the sand adding box is higher than the upper opening of the transition box, the abrasive in the sand adding box can continuously and automatically flow into the transition box and cannot overflow from the upper opening of the transition box, so that the stable material level and air permeability in the transition box are ensured, and the stability, uniformity and continuity of abrasive supply are ensured.
In addition, the arrangement of the transition box is not only favorable for the maintenance and the overhaul of the device, but also provides convenience for the replacement of the calibers of the sand outlet and the sand suction port.
2) The second outlet control mechanism in the invention has various implementation schemes, which are briefly described as follows:
in the first scheme, the second outlet control mechanism comprises a valve body, a valve core, a rotating needle, a first driving mechanism, a valve seat, a second driving mechanism and a tee joint.
The valve body is provided with a sand suction port for receiving the grinding materials sent from an upstream process.
The valve seat has the advantages of being fast to disassemble and assemble and easy to maintain.
The conical valve core with the rotating needle is a core component of the second outlet control mechanism, and the rotating needle is driven to rotate by a first driving mechanism, namely a motor (pneumatic or electric), so that dry grinding materials are prevented from being blocked in an outlet flow passage; the valve core (together with the motor) is driven by a second driving mechanism, namely a bidirectional cylinder, to move back and forth along the axial direction of the valve core, so that the opening and closing operation of the abrasive outlet is completed.
The cylinder motor integrated device is a core component of the second outlet control mechanism, consists of a first driving mechanism, namely a motor (pneumatic or electric), a second driving mechanism, namely a bidirectional cylinder and necessary connecting pieces, is integrated through original design, and is a power source for opening and closing the valve core and the rotating needle of the abrasive outlet.
The tee is the last flow passing component of the second outlet control mechanism.
The second outlet control mechanism successfully solves the problems that an outlet is easy to block and a pipeline is difficult to clean in abrasive conveying and supplying operation, can automatically and remotely control the opening and closing of the outlet, and has the functions of preventing the outlet from being blocked and self-dredging and self-cleaning after operation. The invention replaces the traditional manual blockage clearing mode, greatly improves the working efficiency and reduces the labor intensity of field personnel.
The second scheme comprises a sand supply valve arranged at a discharge port of the transition box and an outlet control assembly with the same structure as the first scheme; the sand supply valve comprises an arc-shaped valve plate and a third driving mechanism, the third driving mechanism drives the arc-shaped valve plate to move under the action of the electrical control system, and the arc-shaped valve plate is enabled to open and close the discharge port of the transition box. The sand supply valve in the structure mainly plays a role in opening and closing the discharge port of the transition box, and the outlet control assembly in the scheme realizes the functions of blocking prevention and blocking dredging by the structure of the outlet control assembly. Confession sand valve in this scheme and export control assembly cooperate each other, both have good control action to the transition case discharge gate, have powerful clearance again and dredge stifled function.
The third scheme comprises a sand supply valve arranged at the discharge port of the transition box and a sand supply tee joint arranged on the lower side of the sand supply valve. The sand supply valve in this scheme is the same as the sand supply valve in the second scheme in structure, and is not repeated. One end of the sand supply tee joint is provided with a sand suction port, one end of the sand supply tee joint is connected with the compressed air dredging pipeline, and the other end of the sand supply tee joint is arranged to be a sand outlet facing a water pressure sand supply tank feed inlet. Only contain in this scheme and supply the sand valve and supply the sand tee bend, simple structure, dredge stifled good performance, the difficult trouble that breaks down of essential element, and easy to maintain maintenance.
5) The transition box and the second outlet control mechanism are arranged and matched with each other, so that the problems of unstable dry abrasive conveying and supplying, easy blockage, uneven concentration and the like in the abrasive jet flow surface pretreatment production process are successfully solved, remote control of various functions can be performed, the transition box and the outlet control design are originally created, and the stability and uniformity of abrasive supplying are ensured; the invention also has the functions of self-dredging and anti-blocking of the abrasive material supply pipeline, and can replace the traditional conveying mode and process.
Drawings
Fig. 1 is a schematic structural diagram of a water-sand mixed abrasive conveying system.
Fig. 2, 3 and 4 are schematic structural diagrams of dry abrasive conveying systems with transition boxes.
Fig. 5a and 5b are schematic structural views of the first outlet control mechanism of the present invention.
FIG. 6 is a schematic diagram of a dry abrasive delivery system with multiple outlets.
Fig. 7 is a schematic diagram of a water-sand mixed abrasive delivery system without a transition box.
Fig. 8, 9 and 10 are schematic structural views of dry abrasive conveying systems without transition boxes.
The notations in the figures have the following meanings:
1-water pressure sand supply tank 2-water pressure pipeline 3-pressurization process pump 4-electric control system
5-quick-opening type sealing flange 6-hydraulic pipeline valve 7-sand adding box 8-transition box
9-transition box discharge port 10-sand adding box discharge port
A1-second Outlet control mechanism B1-first Outlet control mechanism
A2/B2-cleaning dredging pipeline A3/B3-stop valve A4/B4-valve body
A5/B5-valve core A6/B6-rotating needle A7/B7-second drive mechanism A8/B8-valve seat
A9/B9-first driving mechanism A10/B10-tee joint A11/B11-sand suction port
A12/B12-conveying pipeline A13-sand supply valve A14-third driving mechanism
A15-arc valve plate A16-sand supply tee A17-sand suction port
A18-compressed air dredging pipeline
Detailed Description
The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The long-distance conveying system for the water-sand mixed abrasive comprises a dry abrasive conveying system, a water pressure sand supply tank system, an anti-blocking outlet control device arranged on the lower side of the water pressure sand supply tank and an electrical control system 4, which are respectively explained below.
The dry grinding material conveying system can be provided with a transition box or not, and designers select the transition box according to the specific conditions of engineering.
1. Dry abrasive conveying system with transition box
As shown in fig. 1, the dry abrasive conveying system in the present embodiment includes a sand adding box 7 disposed on the upper side and a transition box 8 disposed on the lower side.
Specifically, as shown in fig. 2 to 4, the transition box 8 is disposed below the abrasive outlet of the sand adding box 7, the area of the upper opening of the transition box 8 is larger than the area of the abrasive outlet of the sand adding box 7, and the upper opening of the transition box 8 is designed in an open manner, or a cover plate capable of ventilating is disposed on the upper opening of the transition box 8, so that the upper opening of the transition box 8 is directly facing the atmosphere except for an area communicated with the sand adding box; the depth of the abrasive outlet of the sand adding box 7 extending into the opening at the upper part of the transition box 8 is at least 50 mm; the discharge port 9 of the transition box, namely a sand outlet nozzle, is an independent part and can be quickly replaced according to different working conditions of abrasive jet flow operation; the transition box discharge port 9 is arranged to be a feed port facing the water pressure sand supply tank 1, and a second outlet control mechanism A1 is arranged at the transition box discharge port 9.
The second outlet control mechanism a1 in the present conveying system has three implementation modes, which are as follows:
1.1 first implementation of the second Outlet control mechanism A1
As shown in fig. 3 and 5a, the second outlet control mechanism a1 and the first outlet control mechanism B1 in the present embodiment have the same structure, and both include an outlet control valve and a tee B10; the outlet control valve includes a valve body B4, a valve body B5, a rotary needle B6, a first drive mechanism B9, a valve seat B8, and a second drive mechanism B7.
The valve body B4 is provided with a sand suction port B11 communicated with the discharge port 9 of the transition box, and the sand suction port B11 adopts a bell mouth structure and can completely receive the grinding materials flowing out of the sand outlet of the transition box 8; the discharge hole of the valve body B4 is connected with the feed inlet of a tee joint B10; the valve core B5 and the valve seat B8 are both arranged inside the valve body B4, and the central axis of the valve core B5 is superposed with the central axis of the feed inlet of the tee joint B10; the rotary needle B6 is fixedly arranged on the valve core B5 and extends out of the head end of the valve core, the rotary needle B6 extends into the interior of the feed port of the three-way valve B10, the first driving mechanism B9 is a pneumatic or electric motor, the motor is arranged at one end, far away from the rotary needle B6, of the valve core B5, and the motor is connected with the valve core B5 and can drive the valve core B5 and the rotary needle B6 to rotate around the axial direction of the valve core; the second driving mechanism B7 is a bidirectional cylinder which is connected with the motor and can drive the motor, the valve core B5 and the rotating needle B6 to move along the axial direction of the valve core so that the valve core B5 presses the sealing surface of the valve seat B8 to close the outlet control valve (as shown in FIG. 5B); the discharge port of the tee joint B10 is connected with a conveying pipeline B12, the dredging port of the tee joint B10 is connected with a cleaning dredging pipeline B2, and the cleaning dredging pipeline B2 is an air pressure pipeline.
The motor and the bidirectional cylinder are both connected with an electric control system 4.
The conveying pipeline B12 is a transparent rubber pipe, so that field workers can observe the conveying condition of the abrasive in the conveying pipeline B12 conveniently.
The cleaning and dredging pipeline B2 is communicated with an air source through a stop valve, and the stop valve on the cleaning and dredging pipeline B2 is electrically connected with the electrical control system 4.
In this technical scheme, transfer line B12 and water pressure supply sand jar 1 connect the material mouth to separate each other to make the abrasive flow of transition case discharge gate 9 department keep in a comparatively invariable state.
In the present embodiment, the operation of the second outlet control mechanism a1 is described in the following description of the operation of the first outlet control mechanism B1, and is not described herein again.
1.2 second implementation of the second Outlet control mechanism A1
As shown in fig. 2, the second outlet control mechanism a1 is a sand supply valve a 13.
The sand supply valve A13 comprises an arc-shaped valve plate A15 and a third driving mechanism A14, the third driving mechanism A14 is specifically selected from a cylinder, the cylinder is fixed on the transition box 8 through a bracket, the control end of the cylinder is electrically connected with the electric control system 4, and the piston end of the cylinder is connected with the arc-shaped valve plate A15; the cylinder drives the arc valve plate A15 to move under the action of the electric control system 4 to control the opening and closing of the transition box outlet 9.
1.3 third implementation of the second Outlet control mechanism A1
As shown in fig. 4, the second outlet control mechanism a1 includes a sand supply valve a13 and a sand supply tee a16, one inlet of the sand supply tee a16 is provided with a sand suction port, the other inlet is connected with a compressed air dredging pipe a18, and an outlet of the sand supply tee a16 is provided as a sand outlet facing the feed port of the hydraulic sand supply tank 1.
The structure of the sand supply valve a13 is described in detail in the second implementation, and is not described in detail here.
The sand supply tee joint A16 can be conveniently switched between conveying operation and pipeline cleaning at will.
The sand suction port of the sand supply tee joint A16 adopts a bell mouth structure, and can completely receive the abrasive flowing out from the sand outlet nozzle, and the sand supply tee joint A16 sand suction port in the technical scheme is separated from the discharge port 9 of the transition box, so that the resistance of a sand conveying pipeline A12 at the discharge port of the sand supply tee joint A16 and the suction force at the sand suction port A17 are changed, and the flow of the abrasive at the discharge port 9 of the transition box is not influenced.
And an air valve electrically connected with the electric control system 4 is installed on the compressed air dredging pipeline A18 and is used for controlling the on-off of compressed air and realizing the switching of the functions of conveying the abrasive and cleaning the pipeline.
The operation of the second outlet control mechanism a1 formed by the sand supply valve a13 and the sand supply tee a16 will be further explained with reference to fig. 4:
1) before operation, the sand adding box 7 is filled with abrasive, the abrasive automatically flows into the transition box 8, and the transition box 8 is communicated with the atmosphere, so that the abrasive cannot overflow from the upper opening of the transition box 8 by combining the inherent characteristics of the abrasive, and the abrasive in the transition box 8 has stable material level and air permeability;
2) selecting a proper sand outlet aperture according to the working condition of abrasive jet flow surface pretreatment operation, and replacing a sand outlet nozzle at a discharge port 9 of the transition box; meanwhile, the air valve of the compressed air dredging pipeline A18 connected with the sand supply tee joint A16 is in a closed state;
3) remotely starting an air cylinder of the sand supply control valve A13 to act through the electric control system 4, pulling the arc valve plate A15 to open the discharge port 9 of the transition box, enabling the abrasive to flow out of a sand outlet nozzle at the discharge port 9 of the transition box, and starting the supply operation of the dry abrasive;
4) when the conveying pipeline A12 is abnormal and blocked, the sand supply control valve A13 can be immediately and remotely closed through the electric control system 4, the arc valve plate A15 moves downwards to seal the discharge port 9 of the transition box, at the moment, the transition box 7 stops supplying materials, meanwhile, an air valve on the compressed air dredging pipeline A18 is opened, the conveying pipeline 12 is cleaned by compressed air until the abnormal blocking condition is cleared, and then dry abrasive material supply conveying operation is started again;
5) when the operation needs to be stopped, firstly closing the sand supply control valve A13 according to the mode of the step 4), then opening an air valve on the compressed air dredging pipeline A18, and cleaning residual dry abrasive in the conveying pipeline and the sand supply tee joint A16 by using compressed air to avoid residual siltation;
6) and closing the air valve on the compressed air dredging pipeline A18 to finish the whole set of dry abrasive conveying operation.
The volume of the sand adding box 7 in the embodiment is determined according to the number of the discharge holes at the lower part of the sand adding box, and the requirement of the common dry abrasive jet flow operation can be met for about 3 hours; in order to ensure that the dry grinding material is supplied evenly and stably, and the phenomena of fast and slow time and more and less time can not occur, thereby influencing the effect quality of the grinding material jet flow surface pretreatment operation, the device adopts the original design of a transition box and the separation design of a sand outlet and a sand suction port (the transition box ensures that the material level is basically the same all the time in the sand supply process, and the sand outlet is separated from the sand suction port, thereby eliminating the influence of the resistance change of a sand suction pipeline on the sand supply flow rate); the sand outlet, namely the discharge hole 9 of the transition box, is opened and closed by remote control executed by an electric control pneumatic cylinder; the sand outlet can simply and conveniently replace sand outlets with different calibers according to the requirements of abrasive jet flow operation to achieve different abrasive supply rates; the sand suction port adopts a trumpet-shaped left-hand nut locking design, and can be maintained quickly, simply and conveniently. After the working condition of abrasive jet flow operation is determined, a proper sand outlet nozzle is selected and replaced, then an abrasive conveying pipeline is connected with a sand suction port, and the sand outlet is remotely opened to start conveying and supplying of dry abrasives. And after the operation is finished, closing the sand outlet, opening the air valve to clean the sand suction port and the dry grinding materials remained in the conveying pipeline, and finally closing the air valve to finish the whole supply and conveying operation of the dry grinding materials.
2. Dry abrasive conveying system without transition box
As shown in fig. 7, the dry abrasive delivery system of the present embodiment includes a cope flask 7.
As shown in fig. 8 to 10, the lower part of the sand adding box 7 is provided with an abrasive outlet, and a second outlet control mechanism a1 is arranged at the discharge port 10 of the sand adding box.
The second outlet control mechanism a1 in the present conveying system has three implementation modes, which are as follows:
2.1 first implementation of the second Outlet control mechanism A1
As shown in fig. 9 and 5a, the second outlet control mechanism a1 and the first outlet control mechanism B1 in the present embodiment have the same structure, and both include an outlet control valve and a tee B10; the outlet control valve includes a valve body B4, a valve body B5, a rotary needle B6, a first drive mechanism B9, a valve seat B8, and a second drive mechanism B7.
The valve body B4 is provided with a sand suction port B11 communicated with the sand adding box discharge port 10, and the sand suction port B11 adopts a bell mouth structure and can completely receive the grinding materials flowing out of the sand outlet of the sand adding box 7; the discharge hole of the valve body B4 is connected with the feed inlet of a tee joint B10; the valve core B5 and the valve seat B8 are both arranged inside the valve body B4, and the central axis of the valve core B5 is superposed with the central axis of the feed inlet of the tee joint B10; the rotary needle B6 is fixedly arranged on the valve core B5 and extends out of the head end of the valve core, the rotary needle B6 extends into the interior of the feed port of the three-way valve B10, the first driving mechanism B9 is a pneumatic or electric motor, the motor is arranged at one end, far away from the rotary needle B6, of the valve core B5, and the motor is connected with the valve core B5 and can drive the valve core B5 and the rotary needle B6 to rotate around the axial direction of the valve core; the second driving mechanism B7 is a bidirectional cylinder which is connected with the motor and can drive the motor, the valve core B5 and the rotating needle B6 to move along the axial direction of the valve core so that the valve core B5 presses the sealing surface of the valve seat B8 to close the outlet control valve (as shown in FIG. 5B); the discharge port of the tee joint B10 is connected with a conveying pipeline B12, the dredging port of the tee joint B10 is connected with a cleaning dredging pipeline B2,
the motor and the bidirectional cylinder are both connected with an electric control system 4.
The conveying pipeline B12 is a transparent rubber pipe, so that field workers can observe the conveying condition of the abrasive in the conveying pipeline B12 conveniently.
In this technical scheme, transfer line B12 and water pressure supply sand jar 1 connect the material mouth to separate each other to make the abrasive flow of transition case discharge gate 9 department keep in a comparatively invariable state.
The cleaning and dredging pipeline A2 is communicated with the air pressure pipeline A2 through a stop valve, and the stop valve on the cleaning and dredging pipeline A2 is connected with the electric control system 4.
In the present embodiment, the operation of the second outlet control mechanism a1 is described in the following description of the operation of the first outlet control mechanism B1, and is not described herein again.
2.2 second implementation of the second Outlet control mechanism A1
As shown in FIG. 8, the second outlet control mechanism A1 includes a sand supply valve A13.
The sand supply valve A13 comprises an arc-shaped valve plate A15 and a third driving mechanism A14, the third driving mechanism A14 is specifically selected to be an air cylinder, the air cylinder is fixed on the sand adding box 7 through a bracket, the control end of the air cylinder is electrically connected with the electric control system 4, and the piston end of the air cylinder is connected with the arc-shaped valve plate A15; the air cylinder drives the arc-shaped valve plate A15 to move under the action of the electric control system 4 so as to control the opening and closing of the feeding port 10 of the cope flask.
2.3 third implementation of the second Outlet control mechanism A1
As shown in fig. 10, the second outlet control mechanism a1 includes a sand supply valve a13 and a sand supply tee a16, one inlet of the sand supply tee a16 is provided with a sand suction port, the other inlet is connected with a compressed air dredging pipe a18, and an outlet of the sand supply tee a16 is provided as a sand outlet facing the feed port of the hydraulic sand supply tank 1.
The structure of the sand supply valve a13 is described in detail in the second implementation, and is not described in detail here.
The sand supply tee joint A16 can be conveniently switched between conveying operation and pipeline cleaning at will.
The sand suction port of the sand supply tee joint A16 adopts a bell mouth structure and can completely receive the abrasive flowing out from the sand outlet nozzle, and the sand supply box discharge port 10 is separated from the sand suction port of the sand supply tee joint A16 in the technical scheme, so that the resistance of a sand conveying pipeline A12 at the sand supply tee joint A16 discharge port and the suction force at the sand suction port A17 are changed, and the flow of the abrasive of the sand outlet nozzle at the sand supply box discharge port 10 is not influenced;
and an air valve electrically connected with the electric control system 4 is installed on the compressed air dredging pipeline A18 and is used for controlling the on-off of compressed air and realizing the switching of the functions of conveying the abrasive and cleaning the pipeline.
The dry grinding material conveying system without the transition box is particularly suitable for the sand supply tank 7 with small volume (0.5 m)3Below) or in the case where the requirement for feed flow stability is not high.
The operation of the dry abrasive conveying system without the transition box can be seen in the dry abrasive conveying system with the transition box, and the detailed description is omitted here. It should be noted that both the dry-abrasive delivery system without the transition box and the dry-abrasive delivery system with the transition box can supply dry sand to the set location independently of the delivery system.
3. Hydraulic sand supply tank system
As shown in fig. 1 and 7, the water pressure sand supply tank system comprises a water pressure sand supply tank 1, wherein a quick-opening sealing flange 5 is arranged at the upper material receiving port of the water pressure sand supply tank 1, when dry abrasive is required to be supplemented, the quick-opening sealing flange 5 is opened, and when sand is required to be supplied remotely, the quick-opening sealing flange 5 is closed, so that a closed space is formed inside the water pressure sand supply tank 1, and preparation is made for pressurizing and supplying sand.
The hydraulic sand supply tank 1 is connected with a pressurizing process pump 3 through a hydraulic pipeline 2. The hydraulic pipeline 2 is provided with two outlet ends, one of the outlet ends is connected with the upper end of the hydraulic sand supply tank 1 and is used for filling water into the hydraulic sand supply tank 1 and reaching a set pressure; the other outlet end of the hydraulic pipeline 2 is connected with a first outlet control mechanism B1 arranged at the abrasive outlet at the lower end of the hydraulic sand supply tank 1 and used for supplying water to the first outlet control mechanism B1 to dredge the pipeline.
A water pressure pipeline valve 6 is arranged at one end of the water pressure pipeline 2 communicated with the water pressure sand supply tank 1; one end of the water pressure pipeline 2 communicated with the first outlet control mechanism B1 is provided with a stop valve B3, and the water pressure pipeline valve 6 and the stop valve B3 are both electrically connected with the electric control system 4.
4. Anti-blocking outlet control device
The anti-clogging outlet control device is a first outlet control mechanism B1 arranged on the lower side of the hydraulic sand supply tank, and the structure of the first outlet control mechanism B1 is shown in figures 5a and 5B. The structure of the first outlet control mechanism B1 is described in detail above and will not be described in detail here.
It should be noted that the anti-clogging outlet control device in the invention can be used in a dry abrasive feeding device capable of clearing clogging, and can also be used in a water-sand mixed abrasive feeding system (i.e. a wet sand feeding device), only when the anti-clogging outlet control device is used in the dry abrasive feeding device capable of clearing clogging, the cleaning dredging pipeline B2 is a pneumatic pipeline, and when clogging occurs, air is supplied from an air source to the cleaning dredging pipeline B2 for dredging; when the anti-blocking outlet control device is used in a wet sand feeding device, the cleaning dredging pipeline B2 is a water pressure pipeline, and when blockage occurs, water is supplied into the cleaning dredging pipeline B2 from a water source for dredging.
The operation of the first outlet control mechanism B1 will be further described with reference to fig. 1, 5a and 5B:
1) remotely closing a stop valve B3 on a cleaning and dredging pipeline B2 connected with a dredging port of a tee joint B10 through an electric control system 4;
2) the second driving mechanism B7, namely a bidirectional cylinder, in the first outlet control mechanism B1 is remotely started through the electric control system 4, the bidirectional cylinder drives a motor and a conical surface valve core B5 to act, a water-sand mixed abrasive outlet in the outlet control valve is opened, at the moment, the first outlet control mechanism B1 is in an opening state, then the first driving mechanism B9, namely the motor, is remotely started through the electric control system 4, the motor drives a rotating needle B6 in the conical surface valve core B5 to rotate, the conveying and supplying operation of the abrasive is started, and meanwhile, the anti-blocking function of the first outlet control mechanism B1 is realized due to the rotation of the rotating needle B6;
3) if a conveying pipeline is blocked due to accidents in the operation process, the motor is immediately remotely stopped, the bidirectional cylinder is started to drive the conical valve core B5 to press the sealing surface of the valve seat B8 to close the outlet, then the stop valve B3 on the dredging pipeline B2 is opened, the blocked pipeline is dredged by using pressure water until the pipeline is unobstructed, the stop valve B3 on the tee joint B10 is closed, the bidirectional cylinder is restarted to pull up the conical valve core B5, and the motor is started to recover the abrasive conveying operation;
4) after the conveying operation is completed, the motor is turned off to stop the rotation of the rotating needle B6, and the bidirectional air cylinder is started to drive the conical valve core B5 to press the valve seat B8 to close the outlet.
5) And remotely opening a stop valve B3 on a cleaning dredging pipeline B2 to clean the residual abrasive in the conveying pipeline so as to prevent the residual accumulated abrasive from forming abnormal and difficult-to-clean blockage in the pipeline. After the medium in the conveying pipeline B12 (transparent rubber tube) becomes clear, the stop valve B3 on the cleaning dredging pipeline B2 is closed, and the conveying operation of the mixed abrasive is completed.
5. Long-distance conveying system for water-sand mixed abrasive
The operation of the whole water-sand mixed abrasive long-distance conveying system is further described with reference to the accompanying drawings 1, 2, 5a and 5 b:
1) sanding and pressurizing
Remotely closing a stop valve B3 on a cleaning and dredging pipeline B2 connected with a dredging port of a tee joint B10 through an electric control system 4;
opening the quick-opening sealing flange 5 of the hydraulic sand supply tank 1, opening a sand supply valve A13 at the discharge port 9 of the transition box through the electrical control system 4, and adding sand into the hydraulic sand supply tank 1 through the transition box 8 by the sand adding box 7 until the sand amount in the hydraulic sand supply tank 1 reaches 20-70% of the volume of the hydraulic sand supply tank; closing the sand supply valve A13, and closing the quick-opening sealing flange 5 at the material receiving opening of the water pressure sand supply tank 1;
and opening a water pressure pipeline valve 6, starting a pressurizing process pump 3 or a pressurizing process pump set, filling water into the water pressure sand supply tank 1 through the water pressure pipeline 2, keeping about 8 kilograms of pressure in the tank, and finishing the preparation of the whole device to enter a working state at the moment.
2) Remote sand supply
When the production system needs to supply sand, a second driving mechanism B7 bidirectional cylinder in a first outlet control mechanism B1 is remotely started through an electric control system 4, the bidirectional cylinder drives a motor and a conical valve core B5 to act, a water-sand mixed abrasive outlet in an outlet control valve is opened, at the moment, a first outlet control mechanism B1 is in an opening state, then the first driving mechanism B9, namely the motor, is remotely started through the electric control system 4, the motor drives a rotating needle B6 in the conical valve core B5 to rotate, water-pressure mixed abrasive in the sand supply tank 1 enters the first outlet control mechanism B1 under the action of pressure in the tank, the conveying and supplying operation of the abrasive is started, and meanwhile, the anti-blocking function of the first outlet control mechanism B1 is realized due to the rotation of the rotating needle B6;
3) if a conveying pipeline is blocked due to accidents in the operation process, the motor is immediately remotely stopped, the bidirectional cylinder is started to drive the conical valve core B5 to press the sealing surface of the valve seat B8 to close the outlet, then the stop valve B3 on the dredging pipeline B2 is opened, the blocked pipeline is dredged by using pressure water until the pipeline is unobstructed, the stop valve B3 on the tee joint B10 is closed, the bidirectional cylinder is restarted to pull up the conical valve core B5, and the motor is started to recover the abrasive conveying operation;
4) after the conveying operation is completed, the motor is turned off to stop the rotation of the rotating needle B6, and the bidirectional air cylinder is started to drive the conical valve core B5 to press the valve seat B8 to close the outlet.
5) And remotely opening a stop valve B3 on a cleaning dredging pipeline B2 to clean the residual abrasive in the conveying pipeline so as to prevent the residual accumulated abrasive from forming abnormal and difficult-to-clean blockage in the pipeline. After the medium in the conveying pipeline B12 (transparent rubber tube) becomes clear, the stop valve B3 on the cleaning dredging pipeline B2 is closed, and the conveying operation of the mixed abrasive is completed.
Claims (7)
1. The utility model provides a can clear dry abrasive feedway who blocks up, includes sand adding box (7), its characterized in that: the device also comprises a transition box (8), wherein the transition box (8) is arranged at the lower side of the grinding material outlet of the sand adding box (7); the device also comprises a second outlet control mechanism (A1) with a blockage clearing function, which is arranged at the discharge hole (9) of the transition box;
the second outlet control mechanism (A1) comprises a sand supply valve (A13) arranged at the transition box outlet (9), the sand supply valve (A13) comprises an arc valve plate (A15) and a third driving mechanism (A14), and the third driving mechanism (A14) is connected with the arc valve plate (A15) and can drive the arc valve plate (A15) to move so as to control the opening and closing of the transition box outlet (9); the device also comprises an electric control system (4), wherein the third driving mechanism (A14) is electrically connected with the electric control system (4);
the second outlet control mechanism (A1) further comprises an outlet control valve and a three-way valve (A10); the outlet control valve comprises a valve body (A4), a valve core (A5), a rotating needle (A6), a first driving mechanism (A9), a valve seat (A8) and a second driving mechanism (A7); the valve body (A4) is provided with a sand suction port (A11) corresponding to the discharge port (9) of the transition box, and the discharge port of the valve body (A4) is connected with the feed port of the tee joint (A10); the valve core (A5) and the valve seat (A8) are both arranged inside the valve body (A4), and the central axis of the valve core (A5) is superposed with the central axis of the feed inlet of the tee joint (A10); the rotary needle (A6) is fixedly arranged on the valve core (A5) and extends out of the head end of the valve core, the rotary needle (A6) extends into the interior of the feed port of the tee joint (A10), the first driving mechanism (A9) is arranged at one end, far away from the rotary needle (A6), of the valve core (A5), the first driving mechanism (A9) is connected with the valve core (A5) and can drive the valve core (A5) and the rotary needle (A6) to rotate around the axial direction of the valve core (A5); the second driving mechanism (A7) is connected with the first driving mechanism (A9) and can drive the first driving mechanism (A9), the valve core (A5) and the rotating needle (A6) to move along the axial direction so that the valve core (A5) presses the sealing surface of the valve seat (A8) to close the outlet control valve; the discharge port of the tee joint (A10) is connected with the conveying pipeline (A12), and the dredging port of the tee joint (A10) is connected with the cleaning dredging pipeline (A2).
2. A cleanable dry abrasive feeding device according to claim 1, characterized in that: the area of the upper opening of the transition box (8) is larger than that of the abrasive outlet of the sand adding box (7), the upper opening of the transition box (8) is in an open design or is provided with an air-permeable cover plate, and the depth of the abrasive outlet of the sand adding box (7) extending into the upper opening of the transition box (8) is at least 50 mm.
3. A cleanable dry abrasive feeding device according to claim 1 or 2, characterized in that: the second outlet control mechanism (A1) further comprises a sand supply tee joint (A16) arranged on the lower side of the sand supply valve (A13), one end of the sand supply tee joint (A16) is provided with a sand suction port (A17), one end of the sand supply tee joint is connected with a compressed air dredging pipeline (A18), and the other end of the sand supply tee joint is arranged as a sand outlet.
4. A cleanable dry abrasive feeding device according to claim 1 or 2, characterized in that: the first driving mechanism (A9) is a motor, the second driving mechanism (A7) is a bidirectional cylinder, and the first driving mechanism (A9), the second driving mechanism (A7) and the electric control system (4) are electrically or electrically connected.
5. A cleanable dry abrasive feeding device according to claim 1 or 2, characterized in that: the conveying pipeline (A12) is a transparent rubber pipe; the valve core (A5) is a conical valve core, and the shape of the conical surface of the head of the valve core (A5) is matched with the shape of the inclined surface of the valve seat (A8).
6. A cleanable dry abrasive feeding device according to claim 1 or 2, characterized in that: the cleaning dredging pipeline (A2) is an air pressure pipeline, a stop valve (A3) is arranged on a pipeline, connected with a three-way dredging port in the second outlet control mechanism (A1), of the air pressure pipeline, and the inlet end of the air pressure pipeline is connected with compressed air; the stop valve (A3) is electrically connected with the electric control system (4).
7. A cleanable dry abrasive feeding device according to claim 1 or 2, characterized in that: the transition box (8) is provided with one or more transition box discharge ports (9), and a second outlet control mechanism (A1) is arranged at each transition box discharge port (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201811001149.6A CN111300286A (en) | 2016-08-30 | 2016-08-30 | Dry abrasive feeding device capable of clearing blockage |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811001149.6A CN111300286A (en) | 2016-08-30 | 2016-08-30 | Dry abrasive feeding device capable of clearing blockage |
| CN201610778979.4A CN106239380B (en) | 2016-08-30 | 2016-08-30 | A kind of dry grinding material feeding device |
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| CN201610778979.4A Division CN106239380B (en) | 2016-08-30 | 2016-08-30 | A kind of dry grinding material feeding device |
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| CN201811001149.6A Pending CN111300286A (en) | 2016-08-30 | 2016-08-30 | Dry abrasive feeding device capable of clearing blockage |
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| WO2022243633A1 (en) | 2021-05-18 | 2022-11-24 | Vallourec Oil And Gas France | Blasting system for sandblasting device |
| WO2022243632A1 (en) | 2021-05-18 | 2022-11-24 | Vallourec Oil And Gas France | Sandblasting nozzle |
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| CN108857918A (en) * | 2018-06-29 | 2018-11-23 | 无锡范尼韦尔工程有限公司 | A kind of automatic sand spurting device and technique of the gasoline engine charging turbine of low deflection |
| CN110757350B (en) * | 2019-10-22 | 2021-08-03 | 湖州建烨自动化科技有限公司 | A environment-friendly sand blasting machine that is used for shipbuilding to have and prevents stifled function |
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| CN106239380A (en) | 2016-12-21 |
| CN106239380B (en) | 2018-11-02 |
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