Ladle filler sand adding device
By designing the drainage sand addition device for the sand storage bin and sealing plug, the precise release of drainage sand is achieved, the problem of low delivery accuracy is solved, and the safety of operators and the self-opening rate of ladles is ensured.
Patent Information
- Application Number
- CN202421872735.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-05
- Publication Date
- 2025-07-08
- Estimated Expiration
- 2034-08-05
AI Technical Summary
In the prior art, the accuracy of drainage sand is not high, which affects the self-opening rate of ladles, and the safety and health of operators are threatened during manual delivery.
A drainage sand addition device including a sand storage bin, a sealing plug and a sealing plug connection is designed, and it is positioned above the ladle through a lifting device, and the sealing plug is used to switch between the blockage and the opening of the sand outlet to achieve precise discharge of the drainage sand.
It improves the accuracy of drainage sand, reduces the labor intensity and safety risks of operators, ensures the physical safety of operators, and improves the self-opening rate of ladles.
Smart Images
Figure CN223070440U_ABST
Abstract
Description
Technical Field
[0001] This application belongs to the technical field of metallurgical equipment, and particularly relates to a tapping sand adding device. Background Art
[0002] Tapping sand, as the filling material for the bottom nozzle of the ladle, plays a role in guiding the steel flow. Once the placement position is improper or the amount is insufficient, the ladle cannot be poured naturally.
[0003] Currently, in steel mills, tapping sand is generally manually placed into the ladle nozzle and its surroundings. Due to the relatively high vertical distance between the operating platform and the ladle nozzle, it is difficult to control the accuracy of the tapping sand placement position, which affects the self-opening rate of the ladle. In addition, when manually placing the tapping sand bag, the operator is located above the ladle, and the hot air and dust in the ladle will continuously surge upwards, endangering the safety and health of the operator. Utility Model Content
[0004] This application aims to at least solve to some extent the technical problem of low accuracy in tapping sand placement in related technologies. For this reason, this application provides a tapping sand adding device.
[0005] In a first aspect, a tapping sand adding device provided by an embodiment of this application includes:
[0006] A sand storage bin, having a sand storage cavity, a sand inlet and a sand outlet communicating with the sand storage cavity. The sand outlet is arranged at the bottom of the sand storage bin, the sand inlet is arranged at the upper part of the sand storage bin, and the inner wall of the sand storage cavity near the sand outlet has a first inclined surface;
[0007] A sealing plug, located in the sand storage cavity, having an insertion part and a sealing part fixedly connected. The sealing part has a second inclined surface on the side close to the insertion part;
[0008] A sealing plug connecting piece, one end of which is located in the sand storage cavity and fixedly connected to the sealing part of the sealing plug, and the other end is located outside the sand storage cavity; under the action of the sealing plug connecting piece, the sealing plug can be switched between a first position blocking the sand outlet and a second position opening the sand outlet; wherein, when the sealing plug is in the first position blocking the sand outlet, the insertion part is located in the sand outlet, and the second inclined surface of the sealing part fits with the first inclined surface of the sand storage cavity.
[0009] In some embodiments, the length of the insertion part is greater than the length of the sand outlet, so that when the sealing plug is in the first position blocking the sand outlet, the insertion part can extend out of the sand outlet.
[0010] In some embodiments, a third inclined surface is arranged on the side of the insertion part away from the sealing part.
[0011] In some embodiments, a fourth inclined surface is provided on a side of the sealing portion away from the insertion portion.
[0012] In some embodiments, the drain sand adding device further includes a reinforcing bracket located in the sand storage cavity. The reinforcing bracket includes a first bracket and a plurality of second brackets. The plurality of second brackets are arranged at intervals around the circumference of the first bracket and fixedly connected to the first bracket. One side of the second bracket away from the first bracket is fixedly connected to the inner wall of the sand storage bin.
[0013] In some embodiments, the reinforcing bracket is located in the upper part of the sand storage cavity. The reinforcing bracket further includes a lifting ring installed on the first bracket. An avoidance hole is provided in an area of the top of the sand storage bin corresponding to the position of the lifting ring.
[0014] In some embodiments, the drain sand adding device further includes a sand storage bin connecting piece. One end of the sand storage bin connecting piece extends into the sand storage bin through the avoidance hole and is fixedly connected to the lifting ring, and the other end is used for connecting to a hoisting device.
[0015] In some embodiments, an avoidance gap for avoiding the sealing plug connecting piece is formed between two adjacent second brackets. The sealing plug connecting piece extends into the sand storage bin through the avoidance hole and the avoidance gap to be fixedly connected to the sealing portion of the sealing plug.
[0016] In some embodiments, the sand outlet is opened on the circumferential wall of the sand storage bin.
[0017] In some embodiments, a buffer cushion is provided on the first inclined surface and / or the second inclined surface.
[0018] The utility model has at least the following beneficial effects:
[0019] The drainage sand adding device of the present application includes a sand storage bin, a sealing plug and a sealing plug connecting member. Under the action of the sealing plug connecting member, the sealing plug can block or open the sand outlet of the sand storage bin. In this way, when the sealing plug blocks the sand outlet, drainage sand can be added to the sand storage cavity, so that the drainage sand is stored in the sand storage cavity. Then, the drainage sand adding device is moved above the ladle by a hoisting device or the like and the sand outlet is aligned with the ladle nozzle position, and then the sealing plug connecting member is lifted to open the sand outlet of the sand storage bin, so that the drainage sand falls at the ladle nozzle. After such a design, when putting the drainage sand, the operator does not need to be located above the ladle, and the operator is less affected by the heat wave and smoke and dust of the ladle, ensuring the physical safety of the operator and helping to reduce the labor intensity of the operator. In addition, after such a design, the drainage sand adding device can be more accurately located above the nozzle through a hoisting device or the like, ensuring the accuracy of the drainage sand dropping position and helping to improve the self-opening rate of the ladle. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required to be used in the description of the embodiments. Obviously, the drawings in the following description are some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.
[0021] Figure 1 Shows a schematic structural diagram of the drainage sand adding device in one or more embodiments of the present application.
[0022] Figure 2 Shows a cross-sectional view of the drainage sand adding device when the sealing plug is in the first position in one or more embodiments of the present application.
[0023] Figure 3 Shows a cross-sectional view of the drainage sand adding device when the sealing plug is in the second position in one or more embodiments of the present application.
[0024] Figure 4 Shows Figure 2 An enlarged view of part A in
[0025] Figure 5 Shows a schematic structural diagram of the sand storage bin and the strengthening bracket of the drainage sand adding device in one or more embodiments of the present application.
[0026] Figure 6 Shows Figure 5 A cross-sectional view taken along the direction B-B in
[0027] Figure 7 Shows Figure 5 A top view of
[0028] Figure 8 The schematic structural diagram of the sealing plug of the tapping sand adding device in one or more embodiments of the present application is shown.
[0029] Reference numerals: 100 - tapping sand adding device; 110 - sand storage bin; 111 - sand storage cavity; 112 - sand inlet; 113 - sand outlet; 114 - first inclined surface; 115 - avoidance hole; 120 - sealing plug; 121 - insertion part; 122 - sealing part; 123 - second inclined surface; 124 - third inclined surface; 125 - fourth inclined surface; 130 - sealing plug connecting piece; 140 - strengthening bracket; 141 - first bracket; 142 - second bracket; 143 - lifting ring; 150 - sand storage bin connecting piece; 160 - buffer gasket. Specific embodiments
[0030] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.
[0031] It should be noted that all the directional indications in the embodiments of the present utility model are only used to explain the relative position relationship and movement conditions between components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.
[0032] In the present utility model, unless otherwise clearly defined and limited, the terms "connection", "fixation", etc. shall be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.
[0033] In addition, in the present utility model, descriptions such as "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present utility model.
[0034] In the related art, manual feeding of the drainage sand is adopted, which has the technical problems of low feeding accuracy and affecting the self-opening rate of the ladle. The embodiment of the present application provides a drainage sand adding device, which can at least solve the technical problem of low feeding accuracy of the drainage sand to a certain extent.
[0035] The present application will be described below with reference to the accompanying drawings and specific embodiments:
[0036] As Figure 1 、 Figure 2 and Figure 3 shown, the drainage sand adding device 100 includes a sand storage bin 110, a sealing plug 120, and a sealing plug connecting member 130.
[0037] The sand storage bin 110 has a sand storage cavity 111, a sand inlet 112 and a sand outlet 113 communicating with the sand storage cavity 111. The sand outlet 113 is provided at the bottom of the sand storage bin 110(110), and the sand inlet 112 is provided at the upper part of the sand storage bin 110(110). The inner wall of the sand storage cavity 111 on the side close to the sand outlet 113 has a first inclined surface; the sealing plug 120 is located in the sand storage cavity 111 and has an insertion part 121 and a sealing part 122 fixedly connected. The sealing part 122 has a second inclined surface 123 on the side close to the insertion part 121; one side of the sealing plug connecting member 130 is located in the sand storage cavity 111 and is fixedly connected to the sealing part 122 of the sealing plug 120, and the other side is located outside the sand storage cavity 111; under the action of the sealing plug connecting member 130, the sealing plug 120 can be switched between a first position blocking the sand outlet 113 and a second position opening the sand outlet 113; wherein, when the sealing plug 120 is in the first position blocking the sand outlet 113, the insertion part 121 is located in the sand outlet 113, and the second inclined surface 123 of the sealing part 122 fits with the first inclined surface 114 of the sand storage cavity 111.
[0038] When using the drainage sand adding device 100 of the present application, the drainage sand adding device 100 is hoisted upright by a hoisting device or the like and is in the Figure 1 shown upright state. The drainage sand adding device 100 of the present application adds drainage sand to the sand storage cavity 111 through the sand inlet 112, and the drainage sand in the sand storage cavity 111 is discharged through the sand outlet 113.
[0039] The sealing plug 120 is located in the sand storage cavity 111, and its function is to block or open the sand outlet 113. When the sealing plug 120 blocks the sand outlet 113, the drainage sand in the sand storage cavity 111 cannot flow out through the sand outlet 113 and is temporarily stored in the sand storage bin 110. When the sealing plug 120 does not block the sand outlet 113, the drainage sand in the sand storage cavity 111 flows out through the sand outlet 113.
[0040] Specifically, the sealing plug 120 is connected to one side of the sealing plug connecting member 130, and the other side of the sealing plug connecting member 130 is located outside the sand storage cavity 111. Therefore, the operator can indirectly control the position of the sealing plug 120 by controlling the position of the other side of the sealing plug connecting member 130. Specifically, when the sealing plug connecting member 130 is lifted, the sealing plug connecting member 130 drives the sealing plug 120 to move upward, so that the sealing plug 120 moves away from the sand outlet 113, and further the sealing plug 120 opens the sand outlet 113. When the sealing plug connecting member 130 is lowered, under the action of gravity, the sealing plug 120 moves downward, and further the sealing belt can block the sand outlet 113. Therefore, under the action of the sealing plug connecting member 130, the sealing plug 120 can be switched between a first position where the sand inlet 112 is blocked and a second position where the sand inlet 112 is opened.
[0041] The sealing plug connecting member 130 can be a metal chain, a rope, etc., which is not limited here.
[0042] Specifically, as Figure 2 , Figure 6 and Figure 8 shown, the inner wall of the sand storage cavity 111 near the sand outlet 113 has a first inclined surface 114. The sealing plug 120 has an insertion portion 121 and a sealing portion 122. One side of the sealing portion 122 close to the insertion portion 121 has a second inclined surface 123. In this way, during the process of the sealing plug 120 moving downward under the action of the sealing plug connecting member 130, the first inclined surface 114 can guide the insertion portion 121 so that the insertion portion 121 can quickly be located in the sand outlet 113 to block the sand outlet 113. The first inclined surface 114 and the second inclined surface 123 can also limit the sealing plug 120. When the first inclined surface 114 is in contact with the second inclined surface 123, the sealing plug 120 cannot continue to move downward, avoiding the sealing plug 120 passing through the sand outlet 113. When the first inclined surface 114 is in contact with the second inclined surface 123, there is no gap or the gap is small between the first inclined surface 114 and the second inclined surface 123, so that the drainage sand cannot pass through the gap between the first inclined surface 114 and the second inclined surface 123, which helps to improve the sealing effect of the sealing plug 120. In addition, the design of the first inclined surface 114 helps to collect the drainage sand in the sand storage cavity 111 at the sand outlet 113, helps to make the drainage sand in the sand storage cavity 111 completely flow out from the sand outlet 113, and reduces the residue.
[0043] After the sealing plug 120 blocks the sand outlet 113, drainage sand can be added into the sand storage cavity 111, so that the drainage sand is stored in the sand storage cavity 111. Then, the drainage sand adding device 100 is placed above the ladle and aligned with the ladle nozzle position through a hoisting device or the like. Next, the sealing plug connecting piece 130 is lifted upward, so that the sealing plug 120 opens the sand outlet 113 of the sand storage bin 110, so that the drainage sand falls at the ladle nozzle. After such a design, when the drainage sand is put in, the operator does not need to be above the ladle, and the operator is less affected by the hot wave and smoke and dust of the ladle, ensuring the physical safety of the operator and helping to reduce the labor intensity of the operator. In addition, after such a design, the drainage sand adding device 100 can be accurately located above the nozzle under the action of a hoisting device or the like, improving the accuracy of the drainage sand putting position.
[0044] As Figure 4 shown, in some embodiments, the length of the insertion portion 121 is greater than the length of the sand outlet 113, so that when the sealing plug 120 is in the first position of blocking the sand outlet 113, the insertion portion 121 can extend out of the sand outlet 113.
[0045] As the use time of the drainage sand adding device becomes longer, and under the action of the hot wave in the ladle, the temperature of the working environment of the drainage sand adding device 100 is relatively high, and the sand grains of the drainage sand are easily combined together to form a sintered substance and stick to the inner wall of the sand outlet 113, resulting in poor drainage sand flow and affecting the production and feeding efficiency.
[0046] After such a design, when the sealing plug 120 is in the first position of blocking the sand inlet 112, the insertion portion 121 can extend out of the sand outlet 113, and the insertion portion 121 can push out the bonded drainage sand in the sand outlet 113, dredging the sand outlet 113 to a certain extent, avoiding sintering and blocking of the drainage sand at the sand outlet 113, and helping to improve the discharge rate of the drainage sand.
[0047] As Figure 8 shown, in some embodiments, a third inclined surface 124 is provided on a side of the insertion portion 121 away from the sealing portion 122.
[0048] During the process of the sealing plug 120 moving downward to block the sand outlet 113, the third inclined surface 124 on the insertion portion 121 can contact the first inclined surface 114 of the inner wall of the sand storage cavity 111. The first inclined surface 114 provides guidance for the third inclined surface 124. Under the action of the third inclined surface 124, the insertion portion 121 can slide downward relatively stably along the first inclined surface 114, so that the insertion portion 121 can quickly insert into the sand outlet 113.
[0049] During the upward lifting process of the sealing plug connecting piece 130, the sealing plug 120 will be subject to the resistance of the drainage sand. As Figure 3 and Figure 8As shown, in some embodiments, a fourth inclined surface 125 is provided on the side of the sealing portion 122 away from the insertion portion 121. After such a design, the end of the sealing portion 122 away from the insertion portion 121 has a smaller area, and the pressure will be greater. The greater pressure can effectively overcome the friction and cohesion between the sand grains of the drainage sand, making it easier to pull out the sealing plug 120 from the sand outlet 113.
[0050] As Figure 5 and Figure 7 As shown, in some embodiments, the drainage sand adding device 100 further includes a strengthening bracket 140 located in the sand storage cavity 111. The strengthening bracket 140 includes a first bracket 141 and a plurality of second brackets 142. The plurality of second brackets 142 are arranged at intervals around the circumference of the first bracket 141 and are fixedly connected to the first bracket 141. The side of the second bracket 142 away from the first bracket 141 is fixedly connected to the inner wall of the sand storage bin 110.
[0051] The first bracket 141 and the second brackets 142 support the inner wall of the sand storage bin 110, improving the structural strength of the sand storage bin 110, helping to reduce the deformation of the sand storage bin 110, and extending the service life of the drainage sand adding device 100. The structures of the first bracket 141 and the second brackets 142 are diverse and are not limited in this application. In some embodiments, the first bracket 141 is circular, and 3 second brackets 142 are provided, and the included angle between adjacent two second brackets 142 is 120°.
[0052] In some embodiments, the strengthening bracket 140 is located in the upper part of the sand storage cavity 111. The strengthening bracket 140 further includes a lifting ring 143. The lifting ring 143 is installed on the first bracket 141, and an avoidance hole 115 is provided in the area of the top of the sand storage bin 110 corresponding to the position of the lifting ring 143.
[0053] Under the action of the avoidance hole 115, the lifting ring 143 is exposed. After such a design, the drainage sand adding device 100 can be lifted by a lifting device. The hook of the lifting device extends into the sand storage bin 110 through the avoidance hole 115 to be connected to the lifting ring 143.
[0054] In some embodiments, the drainage sand adding device 100 further includes a sand storage bin connecting piece 150. One side of the sand storage bin connecting piece 150 extends into the sand storage bin 110 through an avoidance hole and is fixedly connected to the lifting ring 143, and the other side is used for connecting to a lifting device.
[0055] Through the design of the sand storage bin connecting piece 150, it is convenient for the drainage sand adding device 100 to be connected to the lifting device, and it is convenient for the lifting device to lift the drainage sand adding device 100.
[0056] The sand storage bin connecting piece 150 can be a metal chain, a rope, etc., and is not limited herein.
[0057] AsFigure 7 As shown, in some embodiments, a clearance for avoiding the seal plug connector 130 is formed between two adjacent second brackets 142. The seal plug connector 130 extends into the sand storage bin 110 through the avoidance hole 115 and the clearance for avoidance, so as to be fixedly connected to the sealing portion 122 of the seal plug 120.
[0058] That is to say, the seal plug connector 130 passes through the sand storage bin 110 through the avoidance hole 115, and then passes through the reinforcement bracket 140 through the clearance for avoidance and is fixedly connected to the sealing portion 122 of the seal plug 120.
[0059] In some embodiments, the sand outlet 113 is opened on the peripheral wall of the sand storage bin 110.
[0060] In some embodiments, a buffer gasket is provided on the first inclined surface 114 and / or the second inclined surface 123.
[0061] If the seal plug 120 is lowered relatively fast, the impact force between the seal plug 120 and the sand storage bin 110 is relatively large. After the buffer gasket is designed, when the seal plug 120 is lowered, the buffer gasket plays a buffering role, which helps to reduce the acting force of the impact between the seal plug 120 and the sand storage bin 110 and reduce the noise generated by the impact between the seal plug 120 and the sand storage bin 110. It should be noted that the working environment temperature of the drainage sand adding device 100 is relatively high, and the elastic gasket should be made of high-temperature resistant material.
[0062] The working principle of the drainage sand adding device 100 of the present application is introduced as follows:
[0063] First, connect the sand storage bin connector 150 of the drainage sand adding device 100 to the first hook of the hoisting device, connect the seal plug connector 130 to the second hook of the hoisting device, and control the height of the second hook so that the seal plug 120 blocks the sand inlet 112.
[0064] Next, hoist the drainage sand adding device 100 to the drainage sand loading area through the hoisting device, and then the operator loads the drainage sand into the sand storage cavity 111 through the sand inlet 112.
[0065] Next, the hoisting device hoists the drainage sand adding device 100 above the ladle and aligns the sand outlet 113 with the ladle nozzle.
[0066] Next, the hoisting device lifts the second hook, so that the seal plug connector 130 and the seal plug 120 connected thereto are lifted to open the sand outlet 113. Then, the drainage sand will flow out from the sand outlet 113 and fall on the ladle nozzle.
[0067] In the description of this specification, the descriptions referring to terms such as "one embodiment", "some embodiments", "examples", "specific examples", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine the different embodiments or examples described in this specification.
[0068] In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by this application.
[0069] Although the embodiments of the present application have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and purposes of the present application. The scope of the present application is defined by the claims and their equivalents.
Claims
1. A tapping compound adding device (100), characterized in that, Comprising: A sand storage bin (110), having a sand storage cavity (111), a sand inlet (112) and a sand outlet (113) communicating with the sand storage cavity (111). The sand outlet (113) is arranged at the bottom of the sand storage bin (110), the sand inlet (112) is arranged at the upper part of the sand storage bin (110), and the inner wall of the sand storage cavity (111) on the side close to the sand outlet (113) has a first inclined surface (114); A sealing plug (120), located in the sand storage cavity (111), having an inserted part (121) and a sealing part (122) fixedly connected. The sealing part (122) has a second inclined surface (123) on the side close to the inserted part (121); A sealing plug connecting piece (130), one side of which is located in the sand storage cavity (111) and fixedly connected to the sealing part (122) of the sealing plug (120), and the other side is located outside the sand storage cavity (111). Under the action of the sealing plug connecting piece (130), the sealing plug (120) can be switched between a first position blocking the sand outlet (113) and a second position opening the sand outlet (113); wherein, when the sealing plug (120) is in the first position blocking the sand outlet (113), the inserted part (121) is located in the sand outlet (113), and the second inclined surface (123) of the sealing part (122) fits with the first inclined surface (114) of the sand storage cavity (111).
2. The drainage sand adding device (100) according to claim 1, characterized in that, The length of the inserted part (121) is greater than the length of the sand outlet (113), so that when the sealing plug (120) is in the first position blocking the sand outlet (113), the inserted part (121) can extend out of the sand outlet (113).
3. The drainage sand adding device (100) according to claim 1, characterized in that, A third inclined surface (124) is arranged on the side of the inserted part (121) away from the sealing part (122).
4. The drainage sand adding device (100) according to claim 1, characterized in that, A fourth inclined surface (125) is arranged on the side of the sealing part (122) away from the inserted part (121).
5. The drainage sand adding device (100) according to claim 1, wherein The drainage sand adding device (100) further includes a reinforcing bracket (140) located in the sand storage cavity (111). The reinforcing bracket (140) includes a first bracket (141) and a plurality of second brackets (142). The plurality of second brackets (142) are arranged at intervals around the circumference of the first bracket (141) and fixedly connected to the first bracket (141). The side of the second bracket (142) away from the first bracket (141) is fixedly connected to the inner wall of the sand storage bin (110).
6. The drainage sand adding device (100) according to claim 5, characterized in that, The reinforcing bracket (140) is located in the upper part of the sand storage cavity (111). The reinforcing bracket (140) further includes a lifting ring (143). The lifting ring (143) is installed on the first bracket (141), and an avoidance hole (115) is opened in the area of the top of the sand storage bin (110) corresponding to the position of the lifting ring (143).
7. The drainage sand adding device (100) according to claim 6, wherein, The drainage sand adding device (100) further includes a sand storage bin connecting piece (150). One side of the sand storage bin connecting piece (150) extends into the sand storage bin (110) through the avoidance hole (115) and is fixedly connected to the lifting ring (143), and the other side is used for connecting to a lifting device.
8. The drain sand adding device (100) according to claim 6, characterized in that, An avoidance gap for avoiding the seal plug connecting piece (130) is formed between two adjacent second brackets (142). The seal plug connecting piece (130) extends into the sand storage bin (110) through the avoidance hole (115) and the avoidance gap to be fixedly connected to the sealing part (122) of the seal plug (120).
9. The drainage sand adding device (100) according to any one of claims 1-8, characterized in that, The sand outlet (113) is formed in the peripheral wall of the sand storage bin (110).
10. The drainage sand adding device (100) according to any one of claims 1-8, characterized in that, A buffer cushion is provided on the first inclined surface (114) and / or the second inclined surface (123).