CN112901806A

CN112901806A - Sluiceway gate valve

Info

Publication number: CN112901806A
Application number: CN202110373081.XA
Authority: CN
Inventors: 金文浩; 牟丹; 王文聪; 危丹锋; 杨昌旭
Original assignee: Wisdri Engineering and Research Incorporation Ltd
Current assignee: Wisdri Engineering and Research Incorporation Ltd
Priority date: 2021-04-07
Filing date: 2021-04-07
Publication date: 2021-06-04

Abstract

The invention relates to a slag runner gate valve which is arranged on a slag runner to perform the actions of breaking and opening a groove of the slag runner, and comprises a speed reducing motor, a rack base, a gear shaft, a bearing seat, a valve plate, a bottom plate and a cross beam, wherein the speed reducing motor drives a gear shaft to rotate through a coupler, and further drives a rack meshed with the gear shaft to realize ascending or descending motion through a gear on the gear shaft; the cross beam is fixedly installed in the groove and arranged opposite to the back face of the bottom plate, the first wedge block and the second wedge block which are matched with each other are fixed on the back faces of the cross beam and the bottom plate respectively, when the valve is closed in place, the first wedge block and the second wedge block are wedged tightly, force pushing the valve plate to the bottom plate is generated on the valve plate, the force pressing the sealing face of the bottom plate is maintained on the valve plate all the time, and the problem that the sealing face of the existing slag runner valve is easily corroded and abraded is solved.

Description

Sluiceway gate valve

Technical Field

The invention relates to the technical field of iron-making blast furnace slag treatment, in particular to a slag flushing runner gate valve.

Background

The red slag generated in the production process of the iron-making blast furnace generally enters a slag treatment system, such as a sedimentation tank, a bottom filter and the like, through a slag flushing channel after being quenched and cooled by slag flushing water. The sluiceway is equipped with a plurality of fork mouths mostly, and every fork mouth all is equipped with the valve, and the slag notch of every fork mouth corresponds a sedimentation tank or end filtering pond, switches through sluiceway valve in the production, makes the grain slag selectivity get into in the corresponding pond.

The normal work of the slag runner valve plays an important role in ensuring the timely treatment of blast furnace slag and the ordered production of a blast furnace, but the slag runner valve has frequent action and severe working environment, is easy to suffer from the scouring and abrasion of water slag and the corrosion of water slag steam, and often has higher failure rate; and the overflow phenomenon of steam and slag flushing water (both slag flushing water and steam are corrosive) often appears at the valve, thus easily causing environmental pollution. Therefore, it is necessary to design a slag flushing runner valve which has simple structure, convenient maintenance and repair and is closed and environment-friendly.

Disclosure of Invention

The invention aims to provide a sluiceway gate valve to solve the problem that a sealing surface of the conventional sluiceway gate valve is easy to corrode and wear.

The specific scheme is as follows:

a slag runner gate valve is arranged on a slag runner to perform the actions of breaking and opening a groove of the slag runner and comprises a speed reducing motor, a rack base, a gear shaft, a bearing seat, a valve plate, a bottom plate and a cross beam, wherein the rack is fixedly arranged at the top of the slag runner; the valve plate is connected to the lower end of the rack, the bottom plate is implanted to the bottom of the groove of the slag flushing groove, the bottom plate is provided with a sealing surface extending out of the groove, and the sealing surface of the bottom plate can be tightly attached to the sealing surface of the valve plate to realize the brake-off of the groove; the cross beam is fixedly arranged in the groove and is arranged opposite to the back surface of the bottom plate, the back surfaces of the cross beam and the bottom plate are respectively and fixedly provided with a first wedge block and a second wedge block which are matched with each other, when the valve is closed in place, the first wedge block and the second wedge block are wedged tightly to generate a force for pushing the valve plate to the bottom plate, and the force for compressing the sealing surface of the bottom plate is maintained by the valve plate all the time.

Furthermore, the slag flushing ditch comprises a concrete foundation formed by pouring concrete and a groove defined by the concrete foundation, and the concrete foundation is further provided with a wear-resistant pouring layer covering the wall surface of the groove.

Furthermore, the upper surface and the lower surface of the bottom plate in the thickness direction are respectively provided with an anchor hook, and the anchor hooks are respectively implanted into the wear-resistant pouring layer and the concrete foundation, so that the bottom plate is fixedly implanted between the wear-resistant pouring layer and the concrete foundation.

Further, the groove has a slope with a step, the bottom plate is located at an upper portion of the slope, and the sealing surface of the bottom plate protrudes from the slope.

Further, the valve plate and the bottom plate are plate bodies made of iron or iron alloy.

Furthermore, a pair of slide plates is fixed on both sides of the width of the valve plate, and the rack drives the valve plate to move up and down in the gap between the paired slide plates when moving up and down.

Furthermore, two sets of racks are arranged on the upper portion of the valve plate, and the lower ends of the two sets of racks are respectively connected to the two sides of the width of the valve plate.

Furthermore, the peripheral surface and the top surface of the rack are provided with sealing plates, except the avoidance hole for reserving the rack to move up and down, the rest parts are sealed, and the speed reduction motor, the rack base, the gear shaft and the bearing seat are positioned outside the sealed space.

Furthermore, the top of the rack is also provided with a limit switch bracket, an on limit switch and an off limit switch are installed on the limit switch bracket, and the rack is provided with a contact rod matched with the on limit switch and the off limit switch.

Compared with the prior art, the slag flushing ditch gate valve provided by the invention has the following advantages: according to the slag flushing ditch gate valve, the bottom plate is embedded into the ditch bottom, the sealing surface of the bottom plate ensures certain flatness, and after the valve plate is closed in place, the valve plate is always pressed against the sealing surface of the bottom plate by thrust force, so that the valve plate is not loosened even impacted by slag flow, the sealing performance of the valve in closing can be effectively ensured, water and slag do not flow and are not washed away at the sealing surface, and further the abrasion of the sealing surface is avoided.

Drawings

Fig. 1 shows a front view of the sluiceway gate valve in an open state.

Fig. 2 shows a front view of the sluiceway gate valve in a closed state.

Fig. 3 shows a left side view of the sluiceway gate valve in a closed state.

Fig. 4 shows a cross-sectional view of the cross beam in fig. 3 in the direction a.

Detailed Description

To further illustrate the various embodiments, the invention provides the accompanying drawings. The accompanying drawings, which are incorporated in and constitute a part of this disclosure, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the embodiments. Those skilled in the art will appreciate still other possible embodiments and advantages of the present invention with reference to these figures. Elements in the figures are not drawn to scale and like reference numerals are generally used to indicate like elements.

The invention will now be further described with reference to the accompanying drawings and detailed description.

As shown in fig. 1 to 4, the present embodiment provides a sluicing runner gate valve, which is installed on a sluicing runner to perform a closing and opening operation on the sluicing runner, wherein the sluicing runner includes a concrete foundation 10 formed by pouring concrete and a groove 11 defined by the concrete foundation 10, and the concrete foundation 10 further has a wear-resistant pouring layer 12 covering the wall of the groove 11 to improve the wear resistance of the groove 11 and reduce the damage of water slag on the groove 11.

The sluicing groove gate valve comprises a speed reducing motor 21, a frame 22, a rack 23, a rack base 24, a gear shaft 25, a bearing seat 26, a valve plate 27, a bottom plate 28 and a cross beam 29.

The rack 22 is fixedly installed at the top of the concrete foundation 10 through an embedded steel plate, the speed reduction motor 21 is fixedly installed at the top of the rack 22, the rack 23 is fixedly installed at the top of the rack 22 through a rack base 24, the gear shaft 25 is fixedly installed at the top of the rack 22 through a bearing seat 26, the speed reduction motor 21 drives the gear shaft 25 to rotate through the coupler 210, and then the gear 250 on the gear shaft 25 drives the rack 23 meshed with the gear shaft to realize ascending or descending movement.

The lower end of the rack 23 is connected to the valve plate 27 through a pin 230, a pair of slide plates 270 are fixed on both left and right sides of the valve plate 27, and the rack 23 drives the valve plate 27 to move up and down in the gap between the paired slide plates 270 when moving up and down, so as to correspond to the opening and closing actions of the gate valve. And the valve plate moves up and down in the gap of the slide plates all the time through the pair of slide plates respectively arranged at two sides of the valve plate, so that the valve plate cannot deviate too much in the front-back direction when moving. Two sets of rack and pinion mechanisms are established on valve plate upper portion in this embodiment to the valve plate motion is driven in step, and the left and right sides direction can not rock too big when can guaranteeing the valve plate motion.

The bottom plate 28 is embedded between the wear-resistant pouring layer 12 and the concrete foundation 10, the upper surface and the lower surface of the bottom plate 28 in the thickness direction are both provided with the anchor hooks 280, the anchor hooks 280 are respectively embedded in the wear-resistant pouring layer 12 and the concrete foundation 10 so as to fix the bottom plate 28, and the anchor hooks on the bottom plate are embedded in the concrete structure layer of the slag sluiceway, so that the bottom plate is ensured to be firmly and reliably installed; and the bottom plate 28 is provided with a sealing surface extending out of the wear-resistant pouring layer 12, and the sealing surface of the bottom plate 28 can be tightly attached to the sealing surface of the valve plate 27 so as to achieve the purpose of cutting off the slag flow.

Still fixed mounting has a crossbeam 29 in the slot 11, the length direction both ends of this crossbeam 29 are respectively through the pre-buried steel sheet installation on the lateral wall of slot 11 width direction fixed, the middle part fixed mounting of crossbeam 29 has a first voussoir 291, valve plate 27 is provided with the second voussoir 271 with first voussoir 291 matching setting on the back towards crossbeam 29 side, when the valve is closed when target in place, wedge each other between first voussoir 291 and the second voussoir 271 and produce the power of pushing it to bottom plate 28 to valve plate 27, make the valve plate maintain the power of compressing tightly the bottom plate sealing face all the time, even receive the sediment stream impact and can not loosen yet, can effectively guarantee the leakproofness when the valve is closed, therefore also make sealing face department not have the sediment flow, wash, and then avoided the wearing and tearing of sealing face.

In this embodiment, the valve plate and the bottom plate are both made of iron or iron alloy, which have hardness and toughness, and are less prone to wear or fracture due to the action of sealing compressive stress and have long service life compared with the prior art in which metal and nonmetal are in sealing contact.

In this embodiment, all peripheral face and the top surface of frame 22 all are equipped with the closing plate, except reserving the hole of dodging of rack 23 up-and-down motion, all other positions all seal to guarantee that the sluicing ditch is in airtight state, in order to avoid valve department often to appear steam, the excessive problem of sluicing water, and guarantee that be located the outside gear motor of frame 22, the gear, drive such as bearing frame, rotating member all outside sluicing ditch and frame, not only overhaul the maintenance convenience, can effectively avoid sluicing steam erosion moreover, equipment is reliable, long-lived.

In this embodiment, a limit switch bracket 30 is further disposed on the top of the frame 22, on which an open limit switch 31 and a close limit switch 32 are mounted, and a feeler lever 33 is disposed on the rack 23 and is matched with the open limit switch 31 and the close limit switch 32. When the valve is opened in place, the feeler lever 33 on the rack 23 touches the opening limit switch 31 to send an opening position signal to the electric control system, the electric control system controls the motor to stop rotating and enables the built-in internal brake of the motor to be locked, and the valve plate is locked at the opening position; when the valve is closed in place, the feeler lever 33 on the rack 23 touches the closing limit switch 32 to send a closing in place signal to the electric control system, the electric control system controls the motor to stop rotating and enables the built-in brake of the motor to be locked, and the valve plate is locked at the closing in place position.

While the invention has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. A sluiceway gate valve is installed on a sluiceway to perform the actions of breaking and opening a groove of the sluiceway, and is characterized in that: the slag flushing device comprises a speed reducing motor, a rack base, a gear shaft, a bearing seat, a valve plate, a bottom plate and a cross beam, wherein the rack is fixedly arranged at the top of a slag flushing ditch, the speed reducing motor is fixedly arranged at the top of the rack, the gear shaft is fixedly arranged on the top of the rack through the bearing seat, the rack is fixedly arranged on the top of the rack through the rack base, a gear on the gear shaft is meshed with the rack, the speed reducing motor drives the gear shaft to rotate through a coupler, and then the rack meshed with the speed reducing motor is driven by the gear on the gear shaft to realize; the valve plate is connected to the lower end of the rack, the bottom plate is implanted to the bottom of the groove of the slag flushing groove, the bottom plate is provided with a sealing surface extending out of the groove, and the sealing surface of the bottom plate can be tightly attached to the sealing surface of the valve plate to realize the brake-off of the groove; the cross beam is fixedly arranged in the groove and is arranged opposite to the back surface of the bottom plate, the back surfaces of the cross beam and the bottom plate are respectively and fixedly provided with a first wedge block and a second wedge block which are matched with each other, when the valve is closed in place, the first wedge block and the second wedge block are wedged tightly to generate a force for pushing the valve plate to the bottom plate, and the force for compressing the sealing surface of the bottom plate is maintained by the valve plate all the time.

2. The sluiceway gate valve of claim 1, wherein: the slag sluiceway comprises a concrete foundation formed by pouring concrete and a groove defined by the concrete foundation, and the concrete foundation is further provided with a wear-resistant pouring layer covering the wall surface of the groove.

3. The sluiceway gate valve of claim 2, wherein: the upper surface and the lower surface of the bottom plate in the thickness direction are respectively provided with an anchor hook, and the anchor hooks are respectively implanted into the wear-resistant pouring layer and the concrete foundation, so that the bottom plate is fixedly implanted between the wear-resistant pouring layer and the concrete foundation.

4. The sluiceway gate valve of claim 2, wherein: the groove has a slope with a drop height, the bottom plate is positioned at the upper part of the slope, and the sealing surface of the bottom plate protrudes out of the slope.

5. The sluiceway gate valve of claim 1, wherein: the valve plate and the bottom plate are plate bodies made of iron or iron alloy.

6. The sluiceway gate valve of claim 1, wherein: and a pair of slide plates is fixed on both sides of the width of the valve plate, and the rack drives the valve plate to move up and down in a gap between the paired slide plates when moving up and down.

7. The sluiceway gate valve of claim 1, wherein: two sets of racks are arranged on the upper portion of the valve plate, and the lower ends of the two sets of racks are respectively connected to the two sides of the width of the valve plate.

8. The sluiceway gate valve of claim 1, wherein: the peripheral surface and the top surface of the rack are provided with sealing plates, the rest parts are sealed except the avoidance hole for reserving the rack to move up and down, and the gear motor, the rack base, the gear shaft and the bearing seat are positioned outside the sealed space.

9. The sluiceway gate valve of claim 1, wherein: the rack is characterized in that a limit switch bracket is further arranged on the top of the rack, an opening limit switch and a closing limit switch are mounted on the limit switch bracket, and a contact rod matched with the opening limit switch and the closing limit switch is arranged on the rack.