A coal mine roadway construction water prevention and control equipment configured with a cyclone separation structure

Abstract

The present application relates to coal mine water prevention and control equipment technical field, specifically for a kind of coal mine roadway construction water prevention and control equipment with cyclone separation structure, including rack, cyclone separator main body and slag collecting box, flash valve seat and sliding guide rod are equipped in slag collecting box, flash valve cover and conical sealing plug are fixedly connected on the upper end of sliding guide rod, reset spring is sleeved on sliding guide rod, locking groove and locking pin are peripherally equipped in flash valve seat, annular locking groove is equipped in the side wall of sliding guide rod, locking pin is embedded in locking groove under the action of locking spring;When material gravity and fluid pressure exceed threshold value, locking pin is automatically pushed out;Flash valve seat lower side is equipped with delay cavity and piston body, one-way valve, realizes reset delay;Conical surface in slag discharge port is equipped with annular flexible sealing scraper;Flash valve cover top surface is equipped with flow field stabilizing rod;The present application is without external power, intermittent flash discharges slag completely, does not jam, sealing is reliable, adapt to underground harsh environment.

Description

Technical Field

[0001] This invention relates to the field of coal mine water control equipment technology, specifically a water control equipment for coal mine roadway construction equipped with a vortex separation structure. Background Technology

[0002] During the tunneling and drilling process in coal mines, large amounts of water often surge. To ensure the continuous and stable operation of the tunnel drainage system, a vortex separator structure needs to be installed at the front end of the water control equipment to quickly separate solid materials such as fine coal slurry, rigid drill cuttings, and large-particle blasting gangue in the water surge, thereby reducing the solids load on the tunnel drainage system and preventing water sump accumulation and drainage pipe blockage. To address the aforementioned problems, existing technologies have proposed several solutions. For example, utility model patent application CN202222926880.8 discloses a hydrocyclone separator with anti-clogging function. This solution involves coaxially mounting an auger and a drive motor inside the discharge port at the lower end of the separator body, attempting to forcibly push out the accumulated solid material through a spiral conveying principle to avoid clogging. However, during tunnel drainage, the gushing water often contains irregular hard particles such as large-diameter blasted gangue, anchoring agent residue, or rigid broken bricks, which can easily become stuck in the gap between the auger blades and the inner wall of the discharge port. Since the motor is rigidly driven, once a hard obstruction occurs, the torque surges instantaneously, easily leading to the burnout of the drive motor or the breakage of the auger shaft, thereby causing the drainage system to fail and affecting the safety of tunnel construction. Summary of the Invention

[0003] The purpose of this invention is to provide a water control device for coal mine roadway construction with a cyclone separation structure, so as to solve the problem that the discharge port of the existing cyclone separator is easily blocked by large particles of gangue and high concentration of coal slime when dealing with water inrush in coal mine roadway construction.

[0004] To achieve the above objectives, the present invention provides the following technical solution: A water control device for coal mine roadway construction with a cyclone separator structure includes a frame, a cyclone separator body, and a slag collection box. Both the cyclone separator body and the slag collection box are mounted on the frame. The slag collection box is located below the cyclone separator body. A slag discharge port is provided at the lower end of the cyclone separator body. A flash release valve seat coaxial with the cyclone separator body is provided inside the slag collection box. A flash release groove is coaxially formed on the flash release valve seat. A sliding guide rod is slidably connected within the flash release groove. A flash release valve is coaxially mounted on the upper end face of the sliding guide rod. The flash release valve cover is equipped with a conical sealing plug that seals with the conical surface of the slag discharge port. A return spring is fitted on the sliding guide rod, and the return spring abuts against the flash release valve cover and the flash release valve seat. Multiple locking grooves are circumferentially formed inside the flash release valve seat, with one end of each locking groove extending into the flash release slide groove. A locking pin is slidably connected within each locking groove, and a locking spring is provided within the locking groove. The two ends of the locking spring are respectively connected to the inner wall of the locking groove and the locking pin. The sliding guide rod has a... The device features an annular locking groove into which the locking pin is embedded. This design utilizes a mechanical locking mechanism formed by the locking pin and the annular locking groove. Under normal conditions, the locking pin, under the action of a locking spring, is embedded in the locking groove, keeping the flash discharge valve cover closed and sealed, achieving self-locking without any external power. Simultaneously, the cooperation between the upper side of the locking groove and the inclined surface at the front end of the locking pin converts the downward thrust generated by the gravity of the material above the slag discharge port and the fluid pressure into a radial force. When the pressure exceeds a set threshold, the locking pin is automatically pushed out of the locking groove, achieving self-driven slag discharge. After the material is discharged, the return spring automatically pushes the flash discharge valve cover back to its original position, and the locking pin, under the action of the locking spring, re-embeds into the locking groove, forming a complete intermittent flash discharge cycle. This ensures that the equipment can achieve intermittent automatic slag discharge entirely based on the material's own pressure in the harsh environment of underground coal mines where there is no electricity or gas supply. The slag discharge port opens instantly at full diameter, allowing large particles of gangue and high-concentration coal slime to pass through unimpeded, eliminating the risk of blockage. Furthermore, it eliminates the need for explosion-proof motors or pneumatic components, improving the equipment's reliability, safety, and adaptability to various operating conditions.

[0005] Preferably, the upper side of the locking groove is a first inclined surface, and the end of the locking pin near the locking groove is provided with a second inclined surface that cooperates with the first inclined surface. The angle between the first inclined surface and the vertical direction is 30°-75°. The outer wall of the flash release valve seat is provided with a threaded hole. The threaded hole is coaxial with and communicates with the locking groove. An adjusting screw is threaded into the threaded hole. The two ends of the locking spring are respectively connected to the locking pin and the adjusting screw. The above scheme sets the upper side of the locking groove as a first inclined surface and sets the front end of the locking pin with a second inclined surface that cooperates with it, so that the downward thrust on the sliding guide rod can generate a radial component force along the inclined surface. When the sum of the material weight and the fluid pressure exceeds the set threshold, the locking pin is automatically pushed out of the locking groove, realizing the self-driven opening of the slag discharge without human intervention. At the same time, by adjusting the screw to change the compression of the locking spring, the unlocking pressure threshold can be adjusted on site according to the solid content, particle size and other working conditions of the roadway water. This avoids the problems of existing solutions being unable to adapt to different water inflow conditions due to fixed unlocking pressure, and unreliable unlocking or premature false triggering due to improper slope angle. It ensures the adaptability of the equipment to different coal mine roadway construction conditions, the sensitivity and reliability of the unlocking action, and the adjustability and controllability of the slag discharge cycle.

[0006] Preferably, the flash release valve seat has multiple delay chambers circumferentially arranged inside. These delay chambers are located below the locking groove. A piston body is slidably connected within each delay chamber. A push rod is located at one end of the piston body near the flash release groove, and a delay clamp is located at the other end of the push rod. The piston body divides the delay chamber into chamber one and chamber two. A delay spring is located in chamber two, with its two ends connected to the inner wall of chamber two and the piston body, respectively. A first-way valve and a second-way valve are respectively mounted on the piston body. The first-way valve's conduction direction points towards chamber two, and the second-way valve's conduction direction points towards chamber one. The flow cross-sectional area of ​​the first one-way valve is larger than that of the second one-way valve. The above scheme sets the delay chamber below the locking groove, and sets a piston body and a delay clamp driven by the first one-way valve, the second one-way valve, and the delay spring in the delay chamber. When the sliding guide rod moves down to the bottom, the delay clamp quickly springs into the locking groove under the action of the delay spring, without affecting the instantaneous full opening of the slag discharge port. When the sliding guide rod moves up to reset, the lower side of the locking groove pushes the delay clamp outward. At this time, the second one-way valve conducts a small flow to generate damping, forcing the delay clamp to slowly retract, thereby delaying the upward reset time of the sliding guide rod. This solution avoids the problems of incomplete slag discharge, material residue clogging the sealing surface, and reduced separation efficiency caused by premature closure of the slag discharge port before the material is completely discharged, which is common in existing solutions. It ensures that the flash release valve cover can maintain a sufficiently long slag discharge time after opening, ensuring that large particles of gangue and high-concentration coal slime are thoroughly flushed out. At the same time, it realizes purely mechanical delay control without the need for external energy or electrical control components, improving the equipment's slag discharge reliability and intermittent flash release adaptability in the harsh environment of underground coal mines.

[0007] Preferably, an annular flexible sealing scraper is coaxially connected to the inner conical surface of the slag discharge port, with the lower end face of the annular flexible sealing scraper pointing towards the conical sealing plug. This solution, by coaxially mounting the annular flexible sealing scraper on the inner conical surface of the slag discharge port and ensuring the lower end face of the scraper points towards the conical sealing plug, allows the inner edge of the scraper to continuously adhere to the outer wall of the conical sealing plug during the up-and-down movement of the flash valve cover, actively scraping away residual materials such as coal slurry and fine particles adhering to the sealing surface. This avoids problems such as poor sealing between the conical sealing plug and the slag discharge port due to material adhesion, and accelerated wear caused by residual particles scratching the sealing surface during repeated opening and closing. It ensures the cleanliness and sealing reliability of the conical sealing plug during long-term operation. Simultaneously, the elastic deformation of the flexible scraper provides auxiliary sealing compensation for the conical surface fit, improving the sealing durability and anti-pollution capability of the equipment.

[0008] Preferably, a flow field stabilizing rod extending upwards into the interior of the cyclone separator body is coaxially connected to the center of the top surface of the flash release valve cover. The top of the flow field stabilizing rod is a streamlined pointed cone. This design, by coaxially setting a flow field stabilizing rod extending upwards into the interior of the cyclone separator body at the center of the top surface of the flash release valve cover and designing its top as a streamlined pointed cone, ensures that the flow field stabilizing rod always occupies the central region of the bottom of the cyclone separator when the flash release valve cover is closed. This effectively suppresses turbulent mixing of the inner and outer cyclones at the bottom, preventing fine particles from being swept up by turbulent eddies and entering the overflow. This avoids the problems of decreased separation accuracy and increased overflow solids content caused by chaotic flow field at the bottom, ensuring the stable separation effect of the cyclone separator on fine particles. Simultaneously, the streamlined pointed cone structure significantly reduces fluid resistance, avoiding additional interference to the main flow field, thereby improving the overall separation efficiency and processing capacity of the equipment.

[0009] It is also worth noting that when the flash release valve cover opens downwards instantaneously after the locking pin is removed, the conical sealing plug quickly detaches from the slag discharge port. The material clump originally piled above the slag discharge port, losing its central support, will naturally form a momentary depression in the center of the material layer due to its own gravity and the pressure of the surrounding fluid, disrupting the original dense accumulation structure of the material. Simultaneously, the flow field stabilizing rod, coaxially fixed to the top surface of the flash release valve cover, moves downwards, further promoting the material to loosen and slide towards the center of the slag discharge port. This synergistic effect of the natural formation of the central depression and the active downward movement of the flow field stabilizing rod prevents bridging or dead zones of material above the slag discharge port, making it easier for high-concentration coal slime and large-particle gangue to be flushed out by the high-pressure jet, improving the smoothness of slag discharge, and thus ensuring the continuous and stable operation of the roadway drainage system.

[0010] Preferably, an annular protective cover is installed on the lower end face of the flash release valve cover, and the inner ring of the annular protective cover is slidably connected to the outer ring of the flash release valve seat. This solution effectively isolates moving parts such as the return spring, sliding guide rod, and locking pin from external coal dust and moisture by installing an annular protective cover on the lower end face of the flash release valve cover and slidably connecting the inner ring of the protective cover to the outer ring of the flash release valve seat. This avoids problems such as sliding guide rod jamming, locking pin malfunction, and spring corrosion caused by coal dust intrusion into the moving parts, ensuring the sensitivity and reliability of the equipment during long-term operation in the high humidity and high dust environment of underground coal mines. At the same time, it provides a closed lubrication space for the moving parts, reducing the maintenance frequency.

[0011] Preferably, an annular scraper is provided on the lower end face of the annular protective cover, and the blade of the annular scraper is in contact with the outer ring of the flash release valve seat. This solution, by providing an annular scraper on the lower end face of the annular protective cover and ensuring the blade is in contact with the outer ring of the flash release valve seat, allows the scraper to actively remove coal sludge, fine particles, and other impurities adhering to the outer ring of the flash release valve seat during the up-and-down movement of the flash release valve cover. This avoids the problem of increased sliding resistance or even jamming between the annular protective cover and the flash release valve seat due to material accumulation, ensuring smooth long-term movement of the protective cover. This ensures sensitive and reliable opening and closing of the flash release valve cover, and simultaneously forms an internal and external synergistic cleaning system with the annular flexible sealing scraper, improving the equipment's self-cleaning ability and operational stability under sticky coal sludge conditions.

[0012] Preferably, the conical sealing plug is made of a rigid material, selected from stainless steel, hard alloy, or ceramic. This solution, by using a rigid material such as stainless steel, hard alloy, or ceramic for the conical sealing plug, creates a hard seal between its outer conical surface and the inner conical surface of the slag discharge port. Simultaneously, the elastic compensation and cleaning function of the annular flexible sealing scraper enhances the sealing system's combination of rigid wear resistance and flexible self-adaptive characteristics. This avoids the problem of traditional elastic sealing plugs being easily scratched and worn when handling coal mine water containing hard particles over long periods, leading to sealing failure. It ensures the service life and sealing reliability of the conical sealing plug under high pressure, high flow rate, and high wear conditions. Furthermore, the high hardness of the rigid material can withstand frequent opening and closing impacts and abrasive erosion, reducing the frequency of equipment maintenance and replacement, and improving the long-term stable operation capability of the water control equipment in harsh underground environments.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. This invention requires no external power and relies entirely on the material's own gravity and fluid pressure to automatically release the locking pin and open the flash valve cover, eliminating the dependence on motors and pneumatic components and meeting the explosion-proof requirements of underground coal mines.

[0014] 2. This invention achieves self-sensing unlocking of pressure threshold through the cooperation of the inclined surface of the locking groove and the inclined surface of the locking pin, and combines with the delayed reset mechanism to ensure that the slag discharge port remains fully open for a sufficient time, so that the slag discharge is thorough and without blockage.

[0015] 3. The present invention uses a rigid conical sealing plug and an annular flexible sealing scraper working together, which is not only wear-resistant and erosion-resistant, but also automatically cleans the sealing surface, significantly improving sealing reliability and the service life of equipment under harsh working conditions. Attached Figure Description

[0016] Figure 1 A schematic diagram of the water control equipment for coal mine roadway construction with a cyclone separation structure according to the present invention; Figure 2 For the present invention Figure 1 Sectional view at point AA; Figure 3 For the present invention Figure 2 A magnified view of a section at point B in the middle; Figure 4 A diagram showing the state of the conical sealing plug when it is open in the water control equipment for coal mine roadway construction with the cyclone separation structure configured in this invention. Figure 5 For the present invention Figure 4 A magnified view of a section at point C; Figure 6 For the present invention Figure 4 A magnified view of a section at point D.

[0017] In the diagram: 1. Frame; 2. Main body of the hydrocyclone separator; 3. Slag collection box; 4. Slag discharge port; 5. Flash release valve seat; 501. Flash release chute; 502. Sliding guide rod; 503. Flash release valve cover; 504. Conical sealing plug; 505. Return spring; 506. Locking groove; 507. Locking pin; 508. Locking spring; 509. Locking groove; 510. First inclined surface; 511. Second inclined surface; 512. Threaded hole; 513. Adjusting screw; 601. Delay chamber; 602. Piston body; 603. Push rod; 604. Delay clamp; 605. First chamber; 606. Second chamber; 607. Delay spring; 608. First check valve; 609. Second check valve; 7. Annular flexible sealing scraper; 8. Flow field stabilizing rod; 901. Annular protective cover; 902. Annular scraper. Detailed Implementation

[0018] Please see Figures 1 to 6 This invention provides a water control device for coal mine roadway construction with a cyclone separation structure, the technical solution of which is as follows: Please refer to the following: A water control device for coal mine roadway construction with a vortex separation structure. Figures 1 to 6The system includes a frame 1, a hydrocyclone separator body 2, and a slag collection box 3. Both the hydrocyclone separator body 2 and the slag collection box 3 are mounted on the frame 1. The slag collection box 3 is located below the hydrocyclone separator body 2. A slag discharge port 4 is located at the lower end of the hydrocyclone separator body 2. A flash release valve seat 5, coaxial with the hydrocyclone separator body 2, is located inside the slag collection box 3. A flash release groove 501 is coaxially formed on the flash release valve seat 5. A sliding guide rod 502 is slidably connected within the flash release groove 501. A flash release valve cover 503 is coaxially mounted on the upper end face of the sliding guide rod 502. A conical sealing plug 504 is provided on the flash release valve cover 503 to seal against the conical surface of the slag discharge port 4. A return spring 505 is sleeved on the sliding guide rod 502, and the return spring 505 abuts against the flash release valve cover 503 and the flash release valve seat 5. Multiple locking grooves 506 are circumferentially formed within the flash release slide 501. Each locking groove 506 extends into the flash release slide 501 at one end. A locking pin 507 is slidably connected within each locking groove 506. A locking spring 508 is also provided within each locking groove 506, with both ends of the spring connected to the inner wall of the locking groove 506 and the locking pin 507, respectively. An annular locking groove 509 is provided on the side wall of the sliding guide rod 502. The locking pin 507 is embedded in the locking groove 509. The upper surface of the locking groove 509 is a first inclined surface 510. A second inclined surface 511, which mates with the first inclined surface 510, is provided at one end of the locking pin 507 near the locking groove 509. The angle between the first inclined surface 510 and the vertical direction is 60°. A threaded hole 51 is provided on the outer wall of the flash release valve seat 5. 2. The threaded hole 512 is coaxial and connected to the locking groove 506. An adjusting screw 513 is threaded into the threaded hole 512. The two ends of the locking spring 508 are connected to the locking pin 507 and the adjusting screw 513, respectively. Multiple delay chambers 601 are circumferentially formed inside the flash release valve seat 5. The delay chambers 601 are located below the locking groove 506. A piston body 602 is slidably connected inside the delay chamber 601. A push rod 603 is provided at one end of the piston body 602 near the flash release groove 501. A delay clamp 604 is provided at the other end of the push rod 603. The piston body 602 divides the delay chamber 601 into a first chamber 605 and a second chamber 606. A delay spring 607 is provided in the second chamber 606. The two ends of the delay spring 607 are connected to the inner wall of the second chamber 606 and the piston body 602, respectively. Next, the piston body 602 is equipped with a first check valve 608 and a second check valve 609. The conduction direction of the first check valve 608 points to the second chamber 606, and the conduction direction of the second check valve 609 points to the first chamber 605. The flow cross-sectional area of ​​the first check valve 608 is larger than that of the second check valve 609. An annular flexible sealing scraper 7 is coaxially connected to the inner conical surface of the slag discharge port 4. The lower end face of the annular flexible sealing scraper 7 points to the conical sealing plug 504. The conical sealing plug 504 is made of rigid material, which can be selected from stainless steel, hard alloy or ceramic. A flow field stabilizing rod 8 extending upward into the interior of the cyclone separator body 2 is coaxially connected to the center of the top surface of the flash release valve cover 503. The top of the flow field stabilizing rod 8 is a streamlined pointed cone shape.An annular protective cover 901 is installed on the lower end face of the flash discharge valve cover 503. The inner ring of the annular protective cover 901 is slidably connected to the outer ring of the flash discharge valve seat 5. An annular scraper 902 is provided on the lower end face of the annular protective cover 901, and the blade of the annular scraper 902 is in contact with the outer ring of the flash discharge valve seat 5.

[0019] When working, please refer to Figures 1 to 6 When the hydrocyclone separator body 2 performs solid-liquid separation on the coal mine roadway water, solid particles such as gangue and coal slurry settle down along the inner wall of the conical section to above the slag discharge port 4. Under normal conditions, the locking spring 508 pushes the locking pin 507 to engage with the annular locking groove 509 of the sliding guide rod 502, the flash valve cover 503 remains closed, the conical sealing plug 504 seals against the conical surface of the slag discharge port 4, and the slag collection box 3 is under normal pressure.

[0020] As material accumulates, the sum of the material's gravity and the downward fluid pressure above the slag discharge port 4 gradually increases. This downward thrust generates a radial component force through the cooperation of the first inclined surface 510 on the upper side of the locking groove 509 and the second inclined surface 511 at the front end of the locking pin 507. When this component force exceeds the preload of the locking spring 508, the locking pin 507 is pushed out of the locking groove 509, and the lock is released. Under the action of water pressure and material gravity, the flash release valve cover 503 and the sliding guide rod 502 accelerate downward instantaneously, the slag discharge port 4 opens to its full diameter, and the accumulated material is flushed into the slag collection box 3 by the high-pressure jet and discharged through the slag discharge pipe. During this process, the annular flexible sealing scraper 7 continuously adheres to the outer wall of the conical sealing plug 504, scraping off the attached material; the flow field stabilizing rod 8 always occupies the central area at the bottom of the hydrocyclone, suppressing turbulence and ensuring separation accuracy.

[0021] To ensure the long-term reliable operation of the delay chamber 601 in the high-concentration coal slurry environment of underground coal mines, the delay chamber 601 is designed as a closed hydraulic oil chamber, pre-filled with clean hydraulic oil. When the sliding guide rod 502 moves down to its lowest position, the locking groove 509 aligns with the delay chamber 601, and the delay spring 607 pushes the piston body 602 and the push rod 603, causing the delay clamp 604 to quickly spring into the locking groove 509. After the material is discharged, the return spring 505 pushes the sliding guide rod 502 upward to reset. The lower side of the locking groove 509 contacts the lower side of the delay clamp 604, pushing the delay clamp 604 outward. At this time, the second check valve 609 is opened at a small flow rate, and the hydraulic oil enclosed in the delay chamber 601 flows slowly, generating damping and forcing the delay clamp 604 to slowly retract, thereby delaying the upward reset time of the sliding guide rod 502, ensuring that the slag discharge port 4 remains fully open for a sufficiently long time, so that the material is completely discharged.

[0022] After the delay clamp 604 is fully retracted, the sliding guide rod 502 moves rapidly upward to the closed position under the action of the return spring 505, and the locking pin 507 re-embeds into the locking groove 509 under the action of the locking spring 508, completing one intermittent flash release cycle. During the movement of the flash release valve cover 503, the annular protective cover 901 and its lower end face annular scraper 902 simultaneously scrape away the coal sludge adhering to the outer ring of the flash release valve seat 5 to prevent jamming.

[0023] Operators can adjust the unlocking pressure threshold by rotating the adjusting screw 513 to change the compression of the locking spring 508 according to the solid content and particle size of the water flowing in the tunnel. They can also adjust the flow cross-sectional area of ​​the one-way valve or replace the delay spring 607 with a different specification to change the delay reset time, thus achieving precise control of the slag discharge cycle. When the equipment requires maintenance, the wear condition of the conical sealing plug 504 and scraper can be directly observed through the inspection port on the side wall of the slag collection box 3 without the need for complete disassembly.

[0024] The specific embodiment of the present invention has been described in detail above with reference to the accompanying drawings, but the present invention is not limited to the embodiments described above. For those skilled in the art, various changes, modifications, substitutions, and variations made to these embodiments without departing from the principles and ideas of the present invention should still fall within the protection scope of the present invention.

Claims

1. A water control device for coal mine roadway construction with a cyclone separation structure, characterized in that, The device includes a frame (1), a hydrocyclone separator body (2), and a slag collection box (3). The hydrocyclone separator body (2) and the slag collection box (3) are both mounted on the frame (1). The slag collection box (3) is located on the lower side of the hydrocyclone separator body (2). The lower end of the hydrocyclone separator body (2) is provided with a slag discharge port (4). The slag collection box (3) is provided with a flash release valve seat (5) coaxial with the hydrocyclone separator body (2). A flash release groove (501) is coaxially opened on the flash release valve seat (5). A sliding guide rod (502) is slidably connected in the flash release groove (501). A flash release valve cover (503) is coaxially mounted on the upper end face of the sliding guide rod (502). A conical sealing plug (504) is provided on the flash release valve cover (503) to seal with the conical surface of the slag discharge port (4). A return spring (505) is sleeved on the sliding guide rod (502). The return spring (505) abuts between the flash release valve cover (503) and the flash release valve seat (5). The flash release valve seat (5) has multiple locking grooves (506) circumferentially opened inside. The ends of the multiple locking grooves (506) near the flash release slide (501) all extend into the flash release slide (501). A locking pin (507) is slidably connected in the locking groove (506). A locking spring (508) is provided in the locking groove (506). The two ends of the locking spring (508) are respectively connected to the inner wall of the locking groove (506) and the locking pin (507). An annular locking groove (509) is provided on the side wall of the sliding guide rod (502). The locking pin (507) is embedded in the locking groove (509).

2. The water control equipment for coal mine roadway construction with a cyclone separation structure according to claim 1, characterized in that: The upper side of the locking groove (509) is a first inclined surface (510). The locking pin (507) has a second inclined surface (511) that cooperates with the first inclined surface (510) at one end near the locking groove (509). The angle between the first inclined surface (510) and the vertical direction is 30°-75°. The outer wall of the flash valve seat (5) is provided with a threaded hole (512). The threaded hole (512) is coaxial with and connected to the locking groove (506). An adjusting screw (513) is threaded into the threaded hole (512). The two ends of the locking spring (508) are connected to the locking pin (507) and the adjusting screw (513) respectively.

3. A water control device for coal mine roadway construction with a cyclone separation structure as described in claim 2, characterized in that: The flash valve seat (5) has multiple delay chambers (601) circumferentially arranged inside. The delay chambers (601) are located below the locking groove (506). A piston body (602) is slidably connected inside the delay chambers (601). A push rod (603) is provided at one end of the piston body (602) near the flash groove (501), and a delay clamp (604) is provided at the other end of the push rod (603). The piston body (602) divides the delay chambers (601) into chamber 1 (605) and chamber 2 (606). Chamber 2 (606) The piston body (602) is equipped with a delay spring (607) at its two ends, which are connected to the inner wall of the second chamber (606) and the piston body (602) respectively. The piston body (602) is equipped with a first check valve (608) and a second check valve (609). The first check valve (608) is directed towards the second chamber (606), and the second check valve (609) is directed towards the first chamber (605). The flow cross-sectional area of ​​the first check valve (608) is larger than that of the second check valve (609).

4. A water control device for coal mine roadway construction with a cyclone separation structure as described in claim 1, characterized in that: An annular flexible sealing scraper (7) is coaxially connected to the inner conical surface of the slag discharge port (4), and the lower end face of the annular flexible sealing scraper (7) points to the conical sealing plug (504).

5. A water control device for coal mine roadway construction with a cyclone separation structure as described in claim 1, characterized in that: The top surface of the flash valve cover (503) is coaxially connected to a flow field stabilizing rod (8) that extends upward into the interior of the cyclone separator body (2). The top of the flow field stabilizing rod (8) is a streamlined pointed cone.

6. A water control device for coal mine roadway construction with a cyclone separation structure as described in claim 1, characterized in that: An annular protective cover (901) is installed on the lower end face of the flash valve cover (503), and the inner ring of the annular protective cover (901) is slidably connected to the outer ring of the flash valve seat (5).

7. A water control device for coal mine roadway construction with a cyclone separation structure as described in claim 6, characterized in that: The lower end face of the annular protective cover (901) is provided with an annular scraper (902), and the blade of the annular scraper (902) is in contact with the outer ring of the flash valve seat (5).

8. A water control device for coal mine roadway construction with a cyclone separation structure as described in claim 4, characterized in that: The conical sealing plug (504) is made of a rigid material, which is selected from any one of stainless steel, hard alloy or ceramic.

Images