WO2023134279A1 - Separation and recycling system for abrasive subjected to rail grinding using high-pressure abrasive water jet - Google Patents

Abstract

A separation and recycling system for an abrasive subjected to rail grinding using a high-pressure abrasive water jet, comprising an abrasive primary separation module, an abrasive drying module, an abrasive secondary separation module and an abrasive collection and storage module. The abrasive primary separation module comprises a recovery water tank (4), a filter screen (5) and a vibration motor (3); the abrasive drying module conveys, to the abrasive secondary separation module, an abrasive subjected to primary drying; the abrasive secondary separation module comprises an abrasive separator (18), a fan (17) and a recovered abrasive pipeline (19); an air inlet of the fan (17) is communicated with the abrasive separator (18), and the fan (17) is used for providing corresponding level of wind power according to the gravity and the windward area of an abrasive to be recovered, so that an abrasive satisfying both the gravity and the surface roughness enters the recovered abrasive pipeline (19) under the action of the wind power; the abrasive collection and storage module is used for storing abrasives collected by the recovered abrasive pipeline (19). The system can improve the abrasive separation accuracy and the abrasive recovery quality, so that abrasives can be more fully recovered and recycled.

Description

A high-pressure abrasive water jet rail grinding abrasive separation and recycling system technical field

The invention belongs to the field of abrasive water jet technology, and more specifically relates to a high-pressure abrasive water jet rail grinding abrasive separation and recycling system.

Background technique

The light train track is the main part of rail transportation. During the operation, due to various factors, the rails are often damaged, such as cracks, wear and other phenomena. Therefore, it is necessary to eliminate and repair the rail damage in time to eliminate the safety. Hidden dangers, common repair measures include rail grinding cars, etc.

Abrasive water jet is a kind of high pressure water jet. It uses water as the medium and uses a high-pressure generating device to obtain huge energy. The abrasive particles are accelerated by the high-pressure water jet, and are added to the high-pressure water jet through the feeding and mixing device to form a mixed jet. Cutting process. Due to the problem of working high pressure, it is difficult to realize continuous feeding of abrasive tanks. At present, there are two solutions to this technical problem: 1. Give up continuous feeding, and stop and add new abrasives after the rail grinding car stops for a certain working distance; 2. , Use two abrasive pots alternately to solve the problem of continuous feeding. Since the abrasives in the abrasive water jet system have a service life, after the same batch of abrasives has been used for many times, the gradual loss of abrasives will directly affect the rail grinding performance and affect the rail grinding accuracy. It would be time-consuming and laborious to replace the overall abrasive when the rail grinding vehicle is shut down, and a considerable part of the abrasive can still maintain a considerable working performance after processing. How to realize the separation and recycling of abrasives and ensure the long-term efficient and stable operation of the rail grinding vehicle will become a problem. problems we need to solve.

Therefore, a set of high-pressure water jet rail grinding abrasive separation and recycling system is set up for the rail grinding technology to realize the separation and recycling of abrasives, so that the rail grinding vehicle can be more durable and complete the rail grinding task more efficiently.

Contents of the invention

In view of the above defects or improvement needs of the prior art, the present invention provides a high-pressure abrasive water jet rail grinding abrasive separation and recycling system, in which the high-pressure abrasive water jet rail is designed in combination with the characteristics of the abrasive itself and its grinding requirements. Grinding and abrasive separation recycling system, and its key components such as primary separation module, abrasive drying module, abrasive secondary separation module and the structure and specific setting of abrasive collection and storage modules are studied and designed, which can effectively solve the existing problems. In the technology, the recovery of abrasives is not sufficient, and the replacement of the overall abrasives is time-consuming and laborious. At the same time, it also has the characteristics of grinding abrasives according to high-pressure abrasive water jet rails, and performs multi-stage drying and separation of abrasives in the abrasive liquid. According to the requirements of particle size, surface roughness, etc., the abrasives are screened to select the abrasives that meet the requirements, and the abrasives are recycled. It has the advantages of environmental protection, energy saving, and strong economic benefits, so it is especially suitable for applications where high-pressure abrasive water jet rail grinding abrasives are separated and recycled.

In order to achieve the above object, the present invention proposes a high-pressure abrasive water jet rail grinding abrasive separation and recycling system, which includes sequentially connected abrasive primary separation module, abrasive drying module, abrasive secondary separation module and abrasive collection and storage module, wherein,

The abrasive primary separation module includes a recovery water tank, a filter screen and a vibration motor. The filter screen is arranged in the recovery water tank for separating the abrasive in the abrasive liquid from the liquid. The vibration motor is fixed in the recovery water tank is used to provide vibration for the filter screen, so that the abrasive remaining on the filter screen enters the abrasive drying module along a designated path;

The abrasive drying module is used to carry out the primary drying of the abrasive, and then transport the primary dried abrasive to the secondary separation module of the abrasive;

The secondary abrasive separation module includes an abrasive separator, a blower fan, and a recovery abrasive pipeline. The abrasive separator is used to input the first-stage dried abrasive at a uniform speed. On the side, the air inlet of the fan is connected with the abrasive separator, which is connected with the abrasive separator, and the fan is used to provide a corresponding level of wind force according to the gravity and windward area of the abrasive to be recovered, so that the gravity and surface Abrasives whose roughness meets the requirements enter the recycling abrasive pipeline under the action of wind force;

The abrasive collection storage module is used for storing the abrasive collected by the recycled abrasive pipeline.

As a further preference, the recovery abrasive pipeline includes a horn separation port and a recovery straight pipe, the horizontal distance between the horn separation port and the abrasive feed port of the abrasive separator, and the vertical distance between the horn separation port and the fan satisfy the following relationship :

Wherein, S is the horizontal distance between the horn separation port and the abrasive feed port of the abrasive separator, H is the vertical distance between the horn separation port and the fan, F _wind is the wind force output by the fan, and F _resistance is the abrasive material air resistance.

As a further preference, the inner wall of the horn separation port is a rough surface, and the connection between the horn separation port and the recovery straight pipe is provided with a sliding separation port, wherein the surface roughness of the abrasive material does not meet the requirements to slide from the sliding separation port. Those that meet the requirements will fall into the recovery straight pipe.

As a further preference, a waste abrasive collection box is provided at the bottom of the abrasive separator for collecting waste abrasive.

As a further preference, a filter hole is provided on the filter, and the diameter of the filter hole is smaller than the particle size of the abrasive to be recovered;

The filter screen is arranged obliquely, and the height of the side connected to the abrasive drying module is the lowest.

As further preferred, the abrasive primary separation module also includes an abrasive removal water tank and a water tank,

The water tank is respectively communicated with the recovery water tank and the abrasive removal water tank through water pipes.

As a further preference, a drier is further provided between the abrasive removal water tank and the abrasive separator, and the drier is used for secondary drying of the abrasive.

As a further preference, a gravity separator is further provided between the dryer and the abrasive separator, and the gravity separator is used to dry the abrasive three times.

As a further preference, the abrasive collection storage module includes an abrasive collection box, and the abrasive collection box is arranged at the bottom end of the abrasive recovery pipeline.

As a further preference, the abrasive collection storage module further includes an abrasive storage tank, the abrasive storage tank is connected to the abrasive collection box through an abrasive stop valve, and a sand filling port is also provided on the abrasive storage tank.

Generally speaking, compared with the prior art, the above technical solution conceived by the present invention mainly has the following technical advantages:

1. The present invention studies and designs its key components such as the primary separation module, the abrasive drying module, the secondary abrasive separation module, and the abrasive collection and storage module and its specific setting method, which can effectively solve the problem of abrasives in the prior art Insufficient recovery, and the replacement of the overall abrasive is time-consuming and labor-intensive. At the same time, it also has the characteristics of grinding abrasives according to high-pressure abrasive water jet rails, and performs multi-stage drying and separation of abrasives in the abrasive liquid. Surface roughness and other requirements require precise screening of abrasives to select abrasives that meet the requirements and recycle them. It has the advantages of environmental protection, energy saving, and strong economic benefits, so it is especially suitable for applications where high-pressure abrasive water jet rail grinding abrasives are separated and recycled.

2. in the present invention, by determining the characteristics of the abrasive to be recovered, such as its particle size range, the scope of its surface roughness, and accordingly set the wind power level of the blower fan, and at the same time, set the abrasive material inlet, The positional distance between the blower fan and the horn separation port is such that the horizontal distance between the horn separation port and the abrasive feed port of the abrasive separator, the vertical distance between the horn separation port and the fan satisfy the corresponding relationship, and at the same time, set the horn The roughness of the inner wall of the separation port makes the abrasive whose surface roughness meets the requirements have a shorter stroke on the inner wall of the horn separation port, so as to quickly leave the inner wall of the horn separation port and fall to the straight recovery pipe. The stroke of the inner wall of the horn separation port is longer to separate from the sliding separation port. The effective screening of the three indicators of abrasive particle size, abrasive weight and abrasive surface roughness is realized, so that the abrasive obtained through screening meets the requirements. It can make the rail grinding car more durable, and the rail grinding operation can be performed more efficiently.

3. In the present invention, through the multi-stage drying of the abrasive, the abrasive entering the final separation link is no longer disturbed by the liquid, which further improves the accuracy of abrasive separation and also further improves the quality of abrasive recovery.

4. The present invention can not only recycle the abrasives after the rails are polished by abrasive jets, but also recycle the abrasives that have not been fully utilized and discard the abrasives that have been fully utilized. After the rail is polished, it goes through a series of operations to realize the recovery and reuse of the abrasive.

Description of drawings

Fig. 1 is a schematic structural view of a high-pressure abrasive water jet rail grinding abrasive separation and recycling system related to a preferred embodiment of the present invention.

In all the drawings, the same reference numerals represent the same technical features, specifically: 1-abrasive recovery inlet; 2-abrasive shut-off valve; 3-vibration motor; 4-recovery water tank; Orifice; 7-abrasive removal water tank; 8-stop valve; 9-stop valve; 10-low pressure centrifugal pump; 11-stop valve; 12-water tank; 13-overflow port; 14-slurry pump; 15-drying 16-gravity separator; 17-fan; 18-abrasive separator; 19-recycling abrasive pipeline; 20-waste abrasive collection box; 21-abrasive collection box; 22-abrasive shut-off valve; -Abrasive storage tank.

Detailed ways

In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not constitute a conflict with each other.

As shown in Figure 1, a high-pressure abrasive water jet rail grinding abrasive separation and recycling system provided by an embodiment of the present invention includes a primary abrasive separation module, an abrasive drying module, a secondary abrasive separation module and an abrasive collection and storage module connected in sequence , wherein, the abrasive primary separation module includes a recovery water tank 4, a filter screen 5 and a vibration motor 3, and the filter screen 5 is arranged in the recovery water tank 4 for separating the abrasive material and the liquid in the abrasive liquid, so The vibration motor 3 is fixedly arranged on the recovery water tank 4, and is used to provide vibration for the filter screen 5, so that the abrasive left on the filter screen 5 enters the abrasive drying module along a designated path; the abrasive drying module is used for After the abrasive material is dried at the first level, the abrasive material after the first-level drying is transported to the secondary separation module of the abrasive material; the secondary separation module of the abrasive material includes an abrasive material separator 18, a blower fan 17 and a recovery abrasive pipeline 19, and the abrasive material separator 18 is used for Input the first-stage dried abrasive at a constant speed, and the fan 17 and the reclaimed abrasive pipeline 19 are respectively arranged on both sides corresponding to the abrasive separator 18, and the air inlet of the fan 17 is communicated with the abrasive separator 18, and the The abrasive separator 18 is connected, and the fan 17 is used to provide a corresponding level of wind force according to the gravity and windward area of the abrasive to be recovered, so that the abrasive that meets the requirements of gravity and surface roughness enters the recycled abrasive pipeline 19 under the action of the wind force; The abrasive collection and storage module is used for storing the abrasive collected by the recycled abrasive pipeline 19 .

More specifically, in the present invention, the abrasive recovery inlet 1 is connected to the recovery water tank 4 through pipelines, and is equipped with an abrasive stop valve 2 . The vibration motor 3 is installed on the upper end cover of the recovery water tank 4, the filter screen 5 is set in the recovery water tank 4, and placed under the left pipe, the overflow port 6 connects the recovery water tank 4 with the abrasive removal water tank 7, and the slurry pump 14 Installed on the right end of the abrasive removal water tank 7 and connected through a pipeline, the drier 15 is also connected with the slurry pump 14 through a pipeline. This part realizes the collection of abrasives through the filter screen and the free settling of abrasives.

Abrasive recovery and reuse part includes gravity separator 16, fan 17, abrasive splitter 18, recycled abrasive pipeline 19, waste abrasive collection box 20, abrasive collection box 21, abrasive shut-off valve 22, sand filling port 23, abrasive storage tank 24; A gravity separator 16 is installed after the dryer 15 and is connected by a pipeline. Abrasive splitter 18 is connected with gravity separator 16, abrasive shut-off valve is arranged at the pipe connection, fan 17 is arranged on the upper right part of abrasive splitter 18, waste abrasive collection box 20 is installed at the lower end of abrasive splitter and connected by pipeline. The recovered abrasive pipeline 19 is embedded in the abrasive splitter 18 and connected with the abrasive collection box 21 . The abrasive storage tank 24 is connected with the abrasive collection box 21 through a pipeline, and is equipped with an abrasive shut-off valve 22 . A sand filling port 23 is provided above the abrasive storage tank 24 .

The right end of the abrasive splitter 18 is an air inlet; the top wall of the cylinder is provided with an air outlet pipe, and the air outlet end of the air outlet pipe is connected with the dust collector; the air outlet pipe extends into the cylinder for a certain length, so The length of the said air outlet pipe extending into the cylinder can be adjusted. Specifically, the end of the air outlet pipe extending into the cylinder is provided with a sleeve, and the sleeve is slidably sleeved on the air outlet pipe. The length inside the cylinder.

When the abrasive is fed into the abrasive splitter through the upper pipeline, there is a certain gap between the quality of the underutilized abrasive particles that still maintain a certain working performance and the quality of the abrasive particles that have been fully utilized.

Air resistance formula: F _resistance = 1/2CρSv2

Among them, C is the air resistance coefficient, ρ is the air density, S is the windward area of the object, and v is the relative motion speed of the object and the air. From the above formula, it can be known that the air resistance is proportional to the air resistance coefficient and the windward area under normal circumstances, and is proportional to the speed proportional to the square. Since the windward area S of the fully utilized abrasive is smaller and its surface is smoother than that of the underutilized abrasive particles, the relative velocity of its movement with the air is greater. To sum up, underutilized abrasives have a shorter moving distance under the dual effects of gravity and wind than fully utilized abrasives. According to the fitting of freely falling abrasives and wind force, the calculated Out of the distance range that the abrasives that have not been fully utilized fall, the recovery abrasive pipeline 19 is set within this range to recycle the abrasives that have not been fully utilized, and the fully utilized abrasives that have a longer moving distance hit and fall on the pipe wall. Fall into the waste abrasive collection box 20 pipelines below.

In a preferred embodiment of the present invention, the recovery abrasive pipeline 19 includes a horn separation port and a recovery straight pipe, the horizontal distance between the horn separation port and the abrasive material inlet of the abrasive separator 18, the distance between the horn separation port and the fan 17 The vertical distance satisfies the following relationship:

Wherein, S is the horizontal distance between the horn separation port and the abrasive material feed port of the abrasive separator 18, H is the vertical distance between the horn separation port and the blower fan 17, F _wind is the wind force output by the blower fan 17, F _{The resistance} is the air resistance of the abrasive.

More specifically, the inner side wall of the horn separation port is a rough surface, and the connection between the horn separation port and the recovery straight pipe is provided with a sliding separation port, wherein the abrasive material whose surface roughness does not meet the requirements slides out of the sliding separation port , and those that meet the requirements will fall into the recovery straight pipe.

In a preferred embodiment of the present invention, the abrasive feed inlet of the abrasive separator 18 is in-line, and the in-line is set facing the sub-machine 17, so that the abrasive disperses and falls towards the sub-machine, so that each The abrasive can be subjected to wind pressure, that is, the abrasive falls evenly on the windward side.

In a preferred embodiment of the present invention, a waste abrasive collection box 20 is provided at the bottom of the abrasive separator 18 for collecting waste abrasive.

In the present invention, a waste liquid recovery and reuse part: the waste liquid recovery and reuse part includes a shut-off valve 8 , a shut-off valve 9 , a low-pressure centrifugal pump 10 , a shut-off valve 11 , a water tank 12 and an overflow port 13 . The water tank 12 is connected to the recovery water tank 4 through a pipeline, and is connected to the abrasive removal water tank 7 through another pipeline. The first pipeline is provided with a shut-off valve 9 and a shut-off valve 11 to control the water flow of the branch flow and the total flow respectively. , the second pipeline is provided with a shut-off valve 8 and a low-pressure centrifugal pump 10 .

The inclined filter screen 6 performs periodic reciprocating motion under the action of the vibrating motor, and the abrasive recovery on the filter screen enters the abrasive removal water tank 7 under the action of vibration.

In a preferred embodiment of the present invention, the filter screen 5 is provided with a filter screen hole, and the diameter of the filter screen hole is smaller than the particle size of the abrasive to be recovered; The side where the abrasive drying module is connected is the lowest.

In a preferred embodiment of the present invention, the abrasive primary separation module further includes an abrasive removal water tank 7 and a water tank 12, and the water tank 12 communicates with the recovery water tank 4 and the abrasive removal water tank 7 respectively through water pipes.

In a preferred embodiment of the present invention, a drier 15 is further provided between the abrasive removal water tank 7 and the abrasive separator 18, and the drier 15 is used for secondary drying of the abrasive.

In a preferred embodiment of the present invention, a gravity separator 16 is also provided between the dryer 15 and the abrasive separator 18, and the gravity separator 16 is used to dry the abrasive three times.

In a preferred embodiment of the present invention, the abrasive collection storage module includes an abrasive collection box 21 , and the abrasive collection box 21 is arranged at the bottom end of the recycled abrasive pipeline 19 .

In a preferred embodiment of the present invention, the abrasive collection storage module also includes an abrasive storage tank 24, the abrasive storage tank 24 is connected with the abrasive collection box 21 through an abrasive shut-off valve 22, and on the abrasive storage tank 24 A sand filling port 23 is also provided.

In the present invention, the entire system also includes a controller, which communicates with various components, valves, pumps, fans, motors, etc. to control the organic work of each component, so that the flow of the entire system is organically carried out. More specifically, the controller activates the working components of the corresponding working link by identifying the conveying process of the screened abrasive on a circulation path.

In a specific embodiment of the present invention, as shown in Figure 1, a high-pressure abrasive water jet rail grinding abrasive separation and recycling system includes an abrasive collection part, an abrasive separation and recovery part, and a waste liquid recovery and reuse part; The abrasive collection part includes: abrasive recovery inlet 1, abrasive stop valve 2, vibration motor 3, recovery water tank 4, filter screen 5, overflow port 6, abrasive removal water tank 7, slurry pump 14, dryer 15.

The abrasive enters from the abrasive recovery inlet 1 and enters the recovery water tank 4 through the connected abrasive stop valve 2. The filter screen 5 is installed inside the recovery water tank 4 to prevent abrasive particles from falling into the water below. The vibration motor 3 is installed in the recovery water tank 4 On the upper end cover, under the action of the vibrating motor 3, the filter screen 5 reciprocates, and the abrasive slides along the slope to the abrasive removal water tank 7, and the side wall of the abrasive removal water tank 7 is provided with an overflow device 6, Since larger abrasive particles are not easy to float to a higher height, the overflow device 6 can screen out smaller abrasive particles to a certain extent. The slurry pump 14 can suck the precipitated abrasive in the abrasive removal water tank 7 into the pipeline, and under the drying action of the drier 15 , the dried abrasive enters the gravity separator 16 . The secondary separation of abrasives and water is realized by using the different densities of abrasives and water. The completely dried abrasives enter the abrasive splitter 18 through the pipeline, and a fan is installed at the right end to provide a constant wind speed. The split flow is realized under the action of wind force, and the specific principle of the abrasive splitter 18 has been introduced above. Abrasives that do not meet the reuse conditions fall into the pipeline below the abrasive splitter 18 and fall into the waste abrasive collection box 20 below. Abrasives that meet the requirements and still have a certain working performance are blown into the recycled abrasive pipeline 19 under the action of the blower fan 17 . The abrasive that meets the requirements falls in the abrasive collection box 21 under the action of gravity, and the abrasive shut-off valve 22 is used to control the flow of the abrasive. The recycled abrasive enters the abrasive storage tank 24 . When the abrasive in the abrasive storage tank drops to a certain degree, the sand adding port 23 feeds a single abrasive tank.

The working principle of the abrasive separator is as follows:

When the abrasive is fed into the abrasive splitter through the upper pipeline, the underutilized abrasive particles that still maintain a certain working performance have a certain quality difference from the abrasive particles that have been fully utilized;

Air resistance formula: F _resistance = 1/2CρSv2

Where C is the air resistance coefficient, ρ is the air density, S is the windward area of the object, and v is the relative velocity of the object and the air. It can be seen from the above formula that under normal circumstances, air resistance is proportional to the air resistance coefficient and the windward area, and proportional to the square of the speed.

Since the windward area S of the fully utilized abrasive is smaller and its surface is smoother than that of the underutilized abrasive particles, the relative velocity of its movement with the air is greater. To sum up, underutilized abrasives have a shorter moving distance under the dual effects of gravity and wind than fully utilized abrasives. According to the fitting of freely falling abrasives and wind force, the calculated Out of the distance range that the abrasives that have not been fully utilized fall, the recovery abrasive pipeline 19 is set within this range to recycle the abrasives that have not been fully utilized, and the fully utilized abrasives that have a longer moving distance hit and fall on the pipe wall. Fall into the waste abrasive collection box 20 pipelines below.

Concrete workflow of the present invention is as follows:

First, determine the characteristics of the abrasive to be recovered, such as the size range of its particle size and the range of its surface roughness, and set the wind power level of the blower fan 17 accordingly, and at the same time, set the abrasive material inlet of the abrasive separator 18 And the positional distance between the horn separation port, so that the horizontal distance between the horn separation port and the abrasive feed inlet of the abrasive separator 18, the horn separation port and the fan 17 vertical distance satisfy the following relationship:

Wherein, S is the horizontal distance between the horn separation port and the abrasive feed port of the abrasive separator 18, H is the vertical distance between the horn separation port and the blower fan 17, F _wind is the wind force output by the blower fan 17, F _{The resistance} is the air resistance of the abrasive.

At the same time, set the roughness of the inner wall of the horn separation port, so that the abrasive material whose surface roughness meets the requirements has a shorter stroke on the inner wall of the horn separation port, so as to quickly leave the inner wall of the horn separation port and fall to the straight recovery pipe without Abrasives that meet the requirements have a longer stroke on the inner wall of the horn separation port to be separated from the sliding separation port.

This part is the core separation part of the system, which realizes the effective screening of the three indicators of abrasive particle size, abrasive weight and abrasive surface roughness, so that the abrasive obtained through screening meets the requirements.

After these tasks are done, open the abrasive material shut-off valve 2, send the abrasive liquid in the abrasive material recovery inlet 1 to the filter screen 5 in the recovery water tank 4, and open the vibration motor 3 at the same time to provide vibration, so that the abrasive material in the abrasive liquid and The liquid is separated, and at the same time, the abrasive with a small particle size is separated to achieve the separation and drying of the abrasive. Open the overflow port 6 to transport the remaining abrasives to the abrasive removal water tank 7. At the same time, open the slurry pump 14 to transport the abrasives to the dryer 15 for secondary drying of the abrasives, and then transport them to the gravity separator 16 for the third stage Drying, the gravity separator 16 in this application is a common gravity separator on the market, that is, the separation of substances is achieved by using the density difference between the production medium and the separated substance (ie, the gravity difference in the gravity field).

Then, the abrasives separated by gravity are input into the abrasive separator 18, and at the same time, the blower fan 17 is turned on, and under the wind force of the blower fan 17, the abrasives are separated for the last time, that is, the abrasives whose gravity and surface roughness meet the requirements enter the recycling machine. tube, and those that do not meet the requirements enter the waste abrasive collection box 20. The abrasives recovered from the straight pipe enter the abrasive collection box 21 for recovery, and then are transported to the abrasive storage tank 24 for storage.

Further, the present invention does not relate to parts that are the same as the prior art or implemented using the prior art.

The invention realizes the recovery and reuse of abrasives, and reuses a considerable part of the old abrasives that still maintain good processing performance, so that it always maintains a certain working performance, and truly realizes the recycling of the entire system. Make the rail grinding vehicle more durable and complete the rail grinding task more efficiently.

It is easy for those skilled in the art to understand that the above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention, All should be included within the protection scope of the present invention.

Claims (10)

1. A high-pressure abrasive water jet rail grinding abrasive separation and recycling system is characterized in that it includes a first-stage separation module for abrasives, an abrasive drying module, a secondary separation module for abrasives, and an abrasive collection and storage module connected in sequence, wherein,

   The abrasive primary separation module includes a recovery water tank (4), a filter screen (5) and a vibrating motor (3), and the filter screen (5) is arranged in the recovery water tank (4) for separating abrasive liquid The abrasive is separated from the liquid, and the vibration motor (3) is fixed on the recovery water tank (4) to provide vibration for the filter screen (5), so that the abrasive left on the filter screen (5) moves along the specified path enter the abrasive drying module;

   The abrasive drying module is used to carry out the primary drying of the abrasive, and then transport the primary dried abrasive to the secondary separation module of the abrasive;

   The abrasive secondary separation module includes an abrasive separator (18), a fan (17) and a reclaimed abrasive pipeline (19), the abrasive separator (18) is used to input the first-level dried abrasive at a uniform speed, and the fan ( 17) and recovery abrasive pipeline (19) are located at the corresponding both sides of abrasive material separator (18) respectively, and the air inlet of described blower fan (17) is communicated with described abrasive material separator (18), and described recovery abrasive material pipeline (19) ) is communicated with the abrasive separator (18), and the blower fan (17) is used to provide a corresponding level of wind force according to the gravity and the windward area of the abrasive to be recovered, so that the gravity and surface roughness of the abrasive can meet the requirements of the wind force. Enter the recovery abrasive pipeline (19);

   The abrasive collection storage module is used for storing the abrasive collected by the recycled abrasive pipeline (19).
2. A high-pressure abrasive water jet rail grinding abrasive separation and recycling system according to claim 1, characterized in that the recovery abrasive pipeline (19) includes a horn separation port and a recovery straight pipe, and the horn separation port is separated from the abrasive material The horizontal distance of the abrasive feed inlet of machine (18), the vertical distance between described horn separation port and blower fan (17) satisfy following relation:

   

   Wherein, S is the horizontal distance between the horn separation port and the abrasive feed port of the abrasive separator (18), H is the vertical distance between the horn separation port and the fan (17), and F is _{the fan} (17) ) output wind force, F _resistance is the air resistance of the abrasive.
3. A high-pressure abrasive water jet rail grinding abrasive separation and recycling system according to claim 2, characterized in that the inner side wall of the horn separation port is a rough surface, and the connection between the horn separation port and the recovery straight pipe is provided There is a sliding separation port, wherein the abrasive whose surface roughness does not meet the requirements slides out from the sliding separation port, and those that meet the requirements fall into the recovery straight pipe.
4. A high-pressure abrasive water jet rail grinding abrasive separation and recycling system according to claim 1, characterized in that a waste abrasive collection box (20) is provided at the bottom of the abrasive separator (18) for collecting waste abrasives .
5. A high-pressure abrasive water jet rail grinding abrasive separation recycling system according to claim 1, characterized in that, the filter screen (5) is provided with a filter screen hole, the diameter of the filter screen hole is smaller than the The particle size of the recovered abrasive;

   The filter screen (5) is arranged obliquely, and the height of the side connected to the abrasive drying module is the lowest.
6. A high-pressure abrasive water jet rail grinding abrasive separation and recycling system according to claim 1, characterized in that the abrasive primary separation module further includes an abrasive removal water tank (7) and a water tank (12),

   The water tank (12) communicates with the recovery water tank (4) and the abrasive removal water tank (7) respectively through water pipes.
7. A high-pressure abrasive water jet rail grinding abrasive separation and recycling system according to claim 6, characterized in that a drier is also provided between the abrasive removal water tank (7) and the abrasive separator (18) (15), the drier (15) is used to carry out secondary drying to the abrasive.
8. A high-pressure abrasive water jet rail grinding abrasive separation recycling system according to claim 7, characterized in that a gravity separator ( 16), the gravity separator (16) is used to dry the abrasive three times.
9. A high-pressure abrasive water jet rail grinding abrasive separation and recycling system according to any one of claims 1-8, characterized in that the abrasive collection storage module includes an abrasive collection box (21), and the abrasive collection box (21 ) is located at the bottom of the recovery abrasive pipeline (19).
10. A high-pressure abrasive water jet rail grinding abrasive separation and recycling system according to claim 9, characterized in that, the abrasive collection and storage module also includes an abrasive storage tank (24), and the abrasive storage tank (24) passes the abrasive The stop valve (22) is connected with the abrasive collection box (21), and the abrasive storage tank (24) is also provided with a sand filling port (23).

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