A drain valve for a descaling machine

Abstract

This invention provides a drain valve for a descaling machine, comprising a drain valve body, a valve core assembly, and a drive mechanism. The drain valve body includes a drain valve seat, an outlet flange, and a slide groove. The drive mechanism includes a drive unit and a mounting unit, with the drive unit slidably arranged vertically. The valve core assembly includes a push rod, a valve core seat, and a valve core cover. A drain port is provided at the top of the valve core seat, and the valve core cover is placed over the drain port. A groove is provided at the bottom of the drive unit, and a through hole is provided on the outlet flange. The push rod passes through the through hole and is movably arranged, with its bottom end connected to the groove and its top end connected to the valve core cover. By moving the drive unit vertically up and down to lift or close the valve core cover, the valve core cover is opened for draining during the billet waiting period in the rolling gap, and closed during descaling operations. This allows for flexible and timely draining without interrupting production, ensuring descaling effectiveness, improving product quality, and eliminating the need for manual disassembly during cleaning and draining, thus reducing the intensity of manual maintenance.

Description

Technical Field

[0001] This invention relates to the field of descaling equipment technology, and in particular to a descaling machine drain valve. Background Technology

[0002] A high-pressure descaling machine is a device used in the steel production process to remove iron oxide scale (i.e., flakes) from the surface of steel billets. This equipment typically uses the impact force of high-pressure water flow to remove the iron oxide scale from the surface of the steel billet, thereby improving the surface quality of the steel. The manifold is an important component of the high-pressure descaling machine, which is responsible for distributing the high-pressure water flow to multiple nozzles to perform comprehensive descaling treatment on the steel billet.

[0003] Although the high-pressure water reaching the manifold has undergone final filtration, foreign matter can still detach and become trapped on the inner wall of the pipe between the final filter and the manifold. This foreign matter can clog the nozzles, affecting the water pattern and impact force, thus impacting the descaling effect and consequently product quality. Therefore, existing technology installs blind flanges at the end of the manifold to periodically clean the foreign matter deposited in the manifold. However, because the cleaning work is time-consuming and labor-intensive, affecting the normal production rhythm, it is generally only carried out periodically. As a result, the deposited foreign matter cannot be cleaned in time, which will definitely affect the descaling effect.

[0004] Therefore, it is necessary to propose a drain valve for descaling machines to solve or at least alleviate the above-mentioned defects. Summary of the Invention

[0005] The main objective of this invention is to provide a drain valve for a descaling machine to solve the problem in the prior art that foreign objects need to be removed only after production has stopped, and that irregular cleaning will affect the descaling effect.

[0006] To achieve the above objectives, the present invention provides a drain valve for a descaling machine, comprising a drain valve body, a valve core assembly, and a drive mechanism; wherein,

[0007] The drain valve body includes a drain valve seat, an outlet flange, and a slide groove. The drain valve seat has a flow chamber for water supply. The inlet of the drain valve seat is used to connect with the descaling machine manifold. The outlet of the drain valve seat is used to connect with the external slag channel through the outlet flange.

[0008] The driving mechanism includes a driving part and a mounting part. The slide is fixed to the side of the drain valve pipe seat away from the water inlet, and the slide extends vertically. The mounting part is connected to the drain valve pipe seat. The bottom end of the driving part passes through and extends out of the bottom end of the slide and is slidably arranged vertically.

[0009] The valve core assembly includes a push rod, a valve core seat, and a valve core cover. The valve core seat is disposed in the flow chamber and has a drain chamber. The bottom end of the valve core seat is open and is located at the outlet of the drain valve pipe seat and communicates with the outlet flange. The top end of the valve core seat has a drain port, and the valve core cover is placed on the drain port.

[0010] The bottom end of the drive unit is provided with a groove, which is inclined upward from the bottom towards the side away from the water inlet. The outlet flange is provided with a through hole on the side wall near the groove. The push rod passes through the through hole and is movably provided along the axial direction of the through hole. The bottom end of the push rod is slidably connected to the groove, and the top end of the push rod is fixedly connected to the valve core cover.

[0011] When the drive unit moves vertically upward, it drives the groove to push the top rod upward to lift the valve core cover, and the valve core seat is in an open sewage discharge state; when the drive unit moves vertically downward, the top rod moves downward with the groove to close the valve core cover, and the valve core seat is in a closed descaling state.

[0012] Preferably, the drain outlet is inclined toward the water inlet of the drain valve seat.

[0013] Preferably, the valve core seat is spherical, the drain outlet is a spherical groove, and the valve core cover is a spherical cover corresponding to the drain outlet.

[0014] Preferably, the mounting part is a hydraulic cylinder support, and the driving part includes a hydraulic cylinder and a slider. The hydraulic cylinder support is connected to the drain valve pipe seat. The hydraulic cylinder extends vertically, and the connecting end of the hydraulic cylinder is connected to the hydraulic cylinder support. The driving end of the hydraulic cylinder is connected to the top end of the slider. The slider passes through the slide groove, and the bottom end of the slider extends out of the slide groove. The bottom end of the slider has the groove. The hydraulic cylinder drives the slider to slide vertically.

[0015] Preferably, the valve core assembly further includes a roller connected to the bottom end of the push rod, and the bottom end of the push rod is slidably connected to the groove via the roller.

[0016] Preferably, the valve core assembly further includes a locking member, which is sleeved on the bottom end of the valve core seat. The side wall of the locking member has external threads, and the outlet of the drain valve seat has internal threads. The valve core seat is fixed by tightening the locking member.

[0017] Preferably, the valve core cover is recessed radially inward along the valve core seat.

[0018] Preferably, the lower end of the drain outlet is flush with the bottom end of the inner wall of the drain valve seat.

[0019] Preferably, the bottom opening diameter of the valve core seat is 50mm to 300mm.

[0020] Preferably, the angle of inclination between the groove and the horizontal plane is 55° to 60°.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] This invention provides a drain valve for a descaling machine, comprising a drain valve body, a valve core assembly, and a drive mechanism. The drain valve body includes a drain valve seat, an outlet flange, and a slide groove. The drive mechanism includes a drive unit and a mounting unit. The bottom end of the drive unit extends through and out of the bottom end of the slide groove and is vertically slidably arranged. The valve core assembly includes a push rod, a valve core seat, and a valve core cover. A drain port is provided at the top of the valve core seat, and the valve core cover is placed on the drain port. A groove is provided at the bottom of the drive unit, and a through hole is provided on the outlet flange. The push rod passes through the through hole and is movably arranged. The bottom end of the push rod is connected to the groove, and the top end of the push rod is connected to the valve core cover. By moving the drive unit vertically up and down to lift or close the valve core cover, the valve core cover is opened for draining during the billet waiting period in the rolling gap, and closed during descaling. This allows for flexible and timely draining without interrupting production, ensuring descaling effect, improving product quality, and eliminating the need for manual disassembly for cleaning and draining, thus reducing the intensity of manual maintenance. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0024] Figure 1 This is a three-dimensional schematic diagram of the overall structure in one embodiment of the present invention;

[0025] Figure 2 This is a cross-sectional schematic diagram of the overall structure in one embodiment of the present invention;

[0026] Figure 3 This is a perspective view of the valve core assembly mounting and connection portion in one embodiment of the present invention;

[0027] Figure 4 This is a perspective view of a valve core assembly according to one embodiment of the present invention.

[0028] The objectives, features, and advantages of this invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings.

[0029] Description of Figure Numbers:

[0030] 10. Drain valve body; 110. Drain valve seat; 111. Inlet; 112. Outlet; 120. Outlet flange; 121. Through hole; 130. Slide groove; 20. Valve core assembly; 210. Push rod; 211. Roller; 220. Valve core seat; 221. Drain port; 230. Valve core cover; 240. Locking element; 30. Drive mechanism; 310. Drive unit; 311. Cylinder; 312. Slider; 313. Groove; 320. Mounting part; 321. Cylinder support. Detailed Implementation

[0031] It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0033] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0034] Furthermore, the use of terms such as "first" and "second" in this invention is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this invention.

[0035] Please see the attached Figure 1-4This invention provides a drain valve for a descaling machine, comprising a drain valve body, a valve core assembly, and a drive mechanism. First, it should be noted that, unlike existing descaling machines which have blind flanges installed at the end of the manifold for periodic cleaning of deposited foreign matter, this invention addresses these shortcomings by providing a drain valve for a descaling machine. Specifically:

[0036] The drain valve body 10 includes a drain valve seat 110, an outlet flange 120, and a slide 130. The drain valve seat 110 has a flow chamber for water supply. The inlet 111 of the drain valve seat 110 is used to connect with the descaling machine manifold. The outlet 112 of the drain valve seat 110 is used to connect with the external slag channel through the outlet flange 120.

[0037] The drive mechanism 30 includes a drive part 310 and a mounting part 320. The slide 130 is fixed to the side of the drain valve seat 110 away from the water inlet, and the slide 130 extends vertically. The mounting part 320 is connected to the drain valve seat 110. The bottom end of the drive part 310 passes through and extends out of the bottom end of the slide 130, and is slidably arranged vertically.

[0038] The valve core assembly 20 includes a push rod 210, a valve core seat 220, and a valve core cover 230. The valve core seat 220 is disposed in the flow chamber and has a drain chamber. The bottom end of the valve core seat 220 is open and is located at the outlet 112 of the drain valve pipe seat 110 and communicates with the outlet flange 120. The top end of the valve core seat 220 has a drain port 221, and the valve core cover 230 is placed on the drain port 221.

[0039] The drive unit 310 has a groove 313 at its bottom end. The groove 313 is inclined upward from the bottom towards the side away from the water inlet. The outlet flange 120 has a through hole 121 on its side wall near the groove 313. The push rod 210 passes through the through hole 121 and is movably arranged along the axial direction of the through hole 121. The bottom end of the push rod 210 is slidably connected to the groove 313. The top end of the push rod 210 is fixedly connected to the valve core cover 230.

[0040] Specifically, the descaling machine drain valve in this application includes a drain valve body 10, a valve core assembly 20, and a drive mechanism 30. The drain valve body 10 is used to allow foreign matter deposited in the manifold to flow through. The valve core assembly 20 is used to allow foreign matter to be discharged during draining and to remain sealed during descaling. The drive mechanism 30 is used to drive the valve core assembly 20 to switch between draining and descaling states.

[0041] The drain valve body 10 includes a drain valve seat 110, an outlet flange 120, and a slide groove 130. The drain valve seat 110 has a flow chamber for water supply, serving as a flow carrier for the water flow. The inlet 111 of the drain valve seat 110 is connected to the manifold inlet (descaling machine manifold), and the outlet 112 of the drain valve seat 110 is connected to the drain outlet (external sludge channel), so that foreign objects can be smoothly flushed from the water flowing out of the manifold inlet to the drain outlet for discharge. The outlet flange 120 facilitates the installation and connection of the outlet 112 of the drain valve seat 110 with the external sludge channel, thereby ensuring a stable connection and sealing. At the same time, the flange installation method is convenient for disassembly and assembly, and has good applicability.

[0042] Furthermore, the drive mechanism 30 includes a drive part 310 and a mounting part 320. The mounting part 320 is used for mounting and connecting the drive part 310, and also for connecting the entire drive mechanism 30 to the drain valve seat 110. The drive part 310 is used to drive the valve core assembly 20 to switch. The drive part 310 is vertically movable. Therefore, to prevent the drive part 310 from deviating when moving vertically, a sliding groove 130 is added to the side of the drain valve seat 110 away from the inlet, so that the drive part 310 passes through the sliding groove 130 to limit the movement of the drive part 310 and ensure its vertical movement path. The bottom end of the drive part 310 extends out of the sliding groove 130 so that the bottom end of the drive part 310 can be connected to the valve core assembly 20, thereby driving the valve core assembly 20 to change state when the drive part 310 moves, thus realizing the switching.

[0043] Further, the valve core assembly 20 includes a push rod 210, a valve core seat 220, and a valve core cover 230. The valve core seat 220 is used for the discharge of foreign matter after it has been introduced. It has a sewage discharge chamber inside and is open at the bottom so that foreign matter can be discharged from the bottom opening after it has been introduced. Since the outlet 112 of the sewage discharge valve seat 110 is connected to the external slag channel through the outlet flange 120, the bottom end of the valve core seat 220 is located at the outlet 112 of the sewage discharge valve seat 110 and is connected to the outlet flange 120. A sewage discharge port 221 is provided on the top of the valve core seat 220. The sewage discharge port 221 is used to receive water from the inlet 111 of the sewage discharge valve seat 110. The valve core cover 230 is used to open and close the drain port 221. When sewage needs to be discharged, the valve core cover 230 is opened so that foreign objects can flow from the drain port 221 into the valve core seat 220 and then be discharged to the external slag channel through the outlet 112 of the drain valve pipe seat 110. When descaling is performed, the valve core cover 230 is covered to prevent the high-pressure water used for descaling from flowing out, thereby ensuring that the secondary valve core assembly 20 is in a sealed state. Therefore, the top rod 210 is set as a transmission component between the valve core cover 230 and the drive part 310 so that the valve core cover 230 can be moved when the drive part 310 moves.

[0044] The outlet flange 120 has a through hole 121 on its side wall near the groove 313 to allow the push rod 210 to pass through. The top end of the push rod 210 is located inside the outlet flange 120 (fixedly connected to the valve core cover 230), and the bottom end is located outside the outlet flange 120 (connected to the groove 313). The bottom end of the drive unit 310 has a groove 313 for connecting the push rod 210. Since the valve core cover 230 is located on top of the valve core seat 220, and the flange outlet is located below the valve core seat 220, and the through hole 121 is located on the flange outlet, the push rod 210 is tilted during the through connection. Therefore, to ensure the drive unit 310 moves upward... The inclined push rod 210 is given a thrust along its tilt direction, causing the groove 313 to tilt upwards from the bottom towards the side away from the water inlet. Thus, the contact between the groove 313 and the push rod 210 is nearly perpendicular. When the drive unit 310 moves upwards, the sloping groove 313 exerts an upward thrust on the push rod 210, causing it to lift the valve core cover 230 to open. Preferably, the bottom end of the push rod 210 is slidably connected to the groove 313, allowing the bottom end of the push rod 210 to slide relative to the groove 313 when the drive unit 310 moves upwards, thus avoiding damage to the push rod 210. The push rod 210 then lifts the valve core cover 230 under the thrust.

[0045] When the drive unit 310 moves vertically upward, it drives the groove 313 to push the top rod 210 upward to lift the valve core cover 230, and the valve core seat 220 is in an open sewage discharge state; when the drive unit 310 moves vertically downward, the top rod 210 moves downward with the groove 313 to close the valve core cover 230, and the valve core seat 220 is in a closed descaling state.

[0046] It is worth noting that during the billet waiting time in the rolling gap (i.e., when no descaling is being performed), when the drive unit 310 is moved vertically upward, the groove 313 also moves upward. The push rod 210 connected to the groove 313 exerts a thrust as the groove 313 moves upward, pushing the push rod 210 to move circumferentially along the through hole 121 and lifting the valve core cover 230. At this time, the valve core cover 230 separates from the valve core seat 220, the drain port 221 opens, and the valve core seat 220 is in an open drain state, allowing water and foreign objects to flow through the drain. The water flows into the valve core seat 220 through the inlet 221 and then out through the bottom to the external slag channel. When the descaling operation begins, the drive unit 310 is controlled to move vertically downward, and the groove 313 also moves downward. The thrust of the groove 313 on the push rod 210 disappears, and the push rod 210 also moves downward under the action of gravity. The valve core cover 230 then covers the drain outlet 221, and the valve core seat 220 is in a closed descaling state. The high-pressure water used for descaling will not flow out from the valve core seat 220, which has a good sealing effect and can flow out from the required nozzle.

[0047] In a preferred embodiment of the present invention, the drain outlet 221 is inclined toward the inlet 111 of the drain valve seat 110.

[0048] It should be noted that since the water and foreign objects flow in from the inlet 111 end of the drain valve seat 110, in order to facilitate the flow of foreign objects into the valve core seat 220, the opening (drain port 221) of the valve core seat 220 can be set towards the drain valve seat 110.

[0049] In a preferred embodiment of the present invention, the valve core seat 220 is spherical, the drain port 221 is a spherical groove, and the valve core cover 230 is a spherical cover corresponding to the drain port 221.

[0050] It should be noted that the spherical valve core seat 220 is easy to install, and when the drain port 221 is provided, a spherical groove with an arc-shaped spherical surface can be provided so that the opening is tilted towards the water inlet 111 of the drain valve seat 110, so as to facilitate the flow of water and foreign matter. Therefore, in order to ensure a good sealing effect during descaling, the valve core cover 230 is provided as a spherical cover corresponding to the drain port 221. Here, "correspondingly provided" means that the spherical protrusion of the valve core cover 230 matches the spherical concave part of the drain port, so as to ensure a seal when covered.

[0051] In a preferred embodiment of the present invention, the mounting part 320 is a hydraulic cylinder support 321, and the driving part 310 includes a hydraulic cylinder 311 and a slider 312. The hydraulic cylinder support 321 is connected to the drain valve pipe seat 110. The hydraulic cylinder 311 extends vertically, and the connecting end of the hydraulic cylinder 311 is connected to the hydraulic cylinder support 321. The driving end of the hydraulic cylinder 311 is connected to the top end of the slider 312. The slider 312 passes through the slide groove 130, and the bottom end of the slider 312 extends out of the slide groove 130. The bottom end of the slider 312 has the groove 313. The hydraulic cylinder 311 drives the slider 312 to slide vertically.

[0052] It is worth noting that the cylinder support 321 is used for mounting the cylinder 311. The cylinder 311 can drive the slider 312 to move along the extension direction of the cylinder 311. In this application, the cylinder 311 is arranged to extend vertically, so that the slider 312 can move vertically up and down. The slide groove 130 limits the movement of the slider 312 to prevent the slider 312 from deviating during movement. The bottom end of the slider 312 extends out of the slide groove 130, so that the groove 313 is opened at the bottom end of the slider 312 (below the slide groove 130) to facilitate the connection of the push rod 210, thereby applying a thrust to the push rod 210 when moving upward.

[0053] In a preferred embodiment of the present invention, the valve core assembly 20 further includes a roller 211, which is connected to the bottom end of the push rod 210. The bottom end of the push rod 210 is slidably connected to the groove 313 via the roller 211.

[0054] It is worth noting that the roller 211 facilitates the sliding relative movement of the push rod 210 to the upward-moving slider 312 when the push rod 210 is lifted. Simultaneously, under the thrust of the inclined slope of the groove 313, the push rod 210 is pushed to move along the through hole 121 towards the valve core seat 220, thereby lifting the valve core cover 230. Therefore, the roller 211 is connected to the bottom end of the push rod 210. When the slider 312 moves down, the roller 211 slides along the groove 313. The push rod 210 retracts downward under the combined action of gravity, thereby achieving the purpose of closing the valve core cover 230.

[0055] Furthermore, the valve core assembly 20 also includes a locking member 240, which is sleeved on the bottom end of the valve core seat 220. The side wall of the locking member 240 has external threads, and the outlet 112 of the drain valve seat 110 has internal threads. The valve core seat 220 is fixed by tightening the locking member 240.

[0056] It should be noted that the locking member 240 is used to further fix the valve core seat 220 to ensure that the valve core seat 220 is stably connected to the outlet 112 of the drain valve pipe seat 110. The locking member 240 has an external thread on its side wall and an internal thread at the outlet 112 of the drain valve pipe seat 110. It is fixed by tightening the threads. During installation, the valve core seat 220 is installed at the outlet 112 of the drain valve pipe seat 110 and aligned. The locking member 240 can be tightened appropriately. After the top rod 210 passes through the through hole 121 and is connected to the back of the valve core cover 230 and the bottom end is placed on the groove 313, the locking member 240 can be tightened.

[0057] Furthermore, the valve core cover 230 is recessed inward along the radial direction of the valve core seat 220.

[0058] It should be understood that, since the spherical drain outlet 221 faces the inlet 111 of the drain valve seat 110, the surface of the spherical valve core cover 230 is recessed inward. This allows the high-pressure water during descaling to impact the recessed valve core cover 230, creating an inward high-pressure thrust, thereby better promoting the sealing effect of the valve core cover 230.

[0059] Furthermore, the lower end of the drain outlet 221 is flush with the bottom end of the inner wall of the inlet 111 of the drain valve seat 110.

[0060] It should be noted that this makes it easier for foreign objects to flow into the valve core seat 220, thus avoiding the problem of some foreign objects accumulating between the bottom of the inner wall surface of the valve core seat 220 and the inlet 111 of the drain valve seat 110.

[0061] Furthermore, the bottom opening diameter of the valve core seat 220 is 50mm to 300mm.

[0062] It should be noted that the larger the bottom opening diameter of the valve core seat 220, the better the sewage discharge effect. It can be selected according to the size of the outlet 112 of the sewage valve seat 110. In a preferred embodiment, the bottom opening diameter of the valve core seat 220 is 50mm to 300mm, and preferably 60mm to 100mm. Those skilled in the art can select according to actual needs.

[0063] Furthermore, the angle of inclination between the groove 313 and the horizontal plane is 55° to 60°.

[0064] It is understood that the angle of inclination between the groove 313 and the horizontal plane can be set according to the inclination of the top rod 210 so that the inclined surface of the groove 313 is perpendicular to the top rod 210, thereby facilitating the lifting of the top rod 210 when it moves upward. Preferably, the angle of inclination between the groove 313 and the horizontal plane is 55° to 60°.

[0065] It is worth mentioning that the opening and closing of the entire valve core assembly 20 in this application can be automatically controlled by setting a program to automatically switch between descaling and sewage discharge processes, which greatly improves efficiency. The specific method of using PLC program control is a common and well-known approach in the prior art, so it will not be described in detail here.

[0066] To facilitate understanding by those skilled in the art, the specific operating procedure is briefly described below:

[0067] During the billet waiting time in the steel rolling gap, the descaling machine is at atmospheric pressure. At this time, the drain valve of this application is opened, that is, the control cylinder 311 drives the slider 312 to move upward, and the groove 313 at the bottom of the slider 312 also moves upward. The bottom of the push rod 210 slides relative to the moving groove 313 under the action of the roller 211, and pushes the push rod 210 along the through hole 121 axially under the thrust of the slope of the groove 313, so that the push rod 210 lifts the valve core cover 230. At this time, the valve core seat 220 is in the open drain state. The deposited foreign matter flows into the valve core seat 220 through the drain port 221 under the action of atmospheric pressure water, and then flows out from the bottom to the external slag channel. When descaling is performed, the drain valve of this application is closed. That is, the control cylinder 311 drives the slider 312 to move downward. The groove 313 at the bottom of the slider 312 also moves downward. The bottom of the push rod 210 slides downward with the groove 313 under the action of the roller 211 and moves downward under the action of gravity, so as to drive the valve core cover 230 to cover the drain port 221. At this time, the valve core seat 220 is in the closed descaling state. The high pressure water during the descaling operation acts on the concave spherical surface of the valve core cover 230, which can further promote the sealing effect of the valve core cover 230. In this way, the drain can be completed in the gap of descaling without interrupting production, and the practical effect is good.

[0068] The above are merely preferred embodiments of the present invention and do not limit the scope of the patent. Any equivalent structural or procedural transformations made based on the description and drawings of the present invention, or direct or indirect applications in other related technical fields, are similarly included within the scope of patent protection of the present invention.

Claims

1. A drain valve for a descaling machine, characterized in that, This includes the drain valve body, valve core assembly, and drive mechanism; among which, The drain valve body includes a drain valve seat, an outlet flange, and a slide groove. The drain valve seat has a flow chamber for water supply. The inlet of the drain valve seat is used to connect with the descaling machine manifold. The outlet of the drain valve seat is used to connect with the external slag channel through the outlet flange. The driving mechanism includes a driving part and a mounting part. The slide is fixed to the side of the drain valve pipe seat away from the water inlet, and the slide extends vertically. The mounting part is connected to the drain valve pipe seat. The bottom end of the driving part passes through and extends out of the bottom end of the slide and is slidably arranged vertically. The valve core assembly includes a push rod, a valve core seat, and a valve core cover. The valve core seat is disposed in the flow chamber and has a drain chamber. The bottom end of the valve core seat is open and is located at the outlet of the drain valve pipe seat and communicates with the outlet flange. The top end of the valve core seat has a drain port, and the valve core cover is placed on the drain port. The bottom end of the drive unit is provided with a groove, which is inclined upward from the bottom towards the side away from the water inlet. The outlet flange is provided with a through hole on the side wall near the groove. The push rod passes through the through hole and is movably provided along the axial direction of the through hole. The bottom end of the push rod is slidably connected to the groove, and the top end of the push rod is fixedly connected to the valve core cover. When the drive unit moves vertically upward, it drives the groove to push the top rod upward to lift the valve core cover, and the valve core seat is in an open sewage discharge state; when the drive unit moves vertically downward, the top rod moves downward with the groove to close the valve core cover, and the valve core seat is in a closed descaling state.

2. The descaling machine drain valve according to claim 1, characterized in that, The drain outlet is inclined toward the inlet of the drain valve seat.

3. The descaling machine drain valve according to claim 2, characterized in that, The valve core seat is spherical, the drain outlet is a spherical groove, and the valve core cover is a spherical cover corresponding to the drain outlet.

4. The descaling machine drain valve according to claim 2, characterized in that, The mounting part is a hydraulic cylinder support, and the driving part includes a hydraulic cylinder and a slider. The hydraulic cylinder support is connected to the drain valve pipe seat. The hydraulic cylinder extends vertically, and the connecting end of the hydraulic cylinder is connected to the hydraulic cylinder support. The driving end of the hydraulic cylinder is connected to the top of the slider. The slider passes through the slide groove, and the bottom end of the slider extends out of the slide groove. The bottom end of the slider has the groove. The hydraulic cylinder drives the slider to slide vertically.

5. The descaling machine drain valve according to claim 1, characterized in that, The valve core assembly also includes a roller connected to the bottom end of the push rod, and the bottom end of the push rod is slidably connected to the groove via the roller.

6. The descaling machine drain valve according to claim 3, characterized in that, The valve core assembly also includes a locking member, which is sleeved on the bottom end of the valve core seat. The side wall of the locking member has external threads, and the outlet of the drain valve seat has internal threads. The valve core seat is fixed by tightening the locking member.

7. The descaling machine drain valve according to claim 3, characterized in that, The valve core cover is recessed radially inward along the valve core seat.

8. The descaling machine drain valve according to claim 3, characterized in that, The lower end of the drain outlet is flush with the bottom end of the inner wall of the drain valve seat.

9. The descaling machine drain valve according to claim 1, characterized in that, The bottom opening diameter of the valve core seat is 50mm to 300mm.

10. The descaling machine drain valve according to claim 1, characterized in that, The angle of inclination between the trench and the horizontal plane is 55° to 60°.

Images