Sand filling device for die casting central casting pipe
By designing a sand filling device with peripheral stopper, cover and positioning retaining ring in the injection pipe in mold casting, the deviation and safety hazards caused by river sand erosion are solved, and the filling quality and safety are improved.
Patent Information
- Application Number
- CN202323624879.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-27
- Publication Date
- 2025-01-10
- Estimated Expiration
- 2033-12-27
AI Technical Summary
During the sand filling process of the injector pipe in mold casting, river sand is prone to deviating the bricks due to erosion, the cardboard deflector is insufficient, and it is easy to bend, which increases the risk of river sand entering the injector pipe, affects the quality of infusion, and There are major safety hazards.
A sand filling device including an outer stopper, a cover and a positioning retaining ring is designed. The lower end of the outer stopper extends into the upper port of the pipe body through the open opening of the lower end of the outer stopper, the cover seals the pipe brick casting channel, and the positioning retaining ring provides positioning support. , reduce the risk of river sand erosion cover and stop cylinder offset, and ensure that river sand enters the filling gap.
It effectively reduces the risk of river sand entering the pipe brick casting channel, improves the quality of infusion and the safety of staff, and reduces the risk of river sand erosion cover and barrier cylinder offset.
Smart Images
Figure CN222326646U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of die casting technology, for example, to a sand filling device for a casting pipe in a die casting. Background Art
[0002] At present, in the process of producing large and medium-sized forgings, all enterprises adopt the production process of electric furnace smelting, LF (Ladle Furnace, ladle refining furnace) refining, and pouring steel ingots to produce die-cast steel ingots. Its advantage is that it can produce a variety of ingot specifications, and the production method can meet the customer's needs for small batches of multiple steel grades. Therefore, die-cast steel ingots are an indispensable front-end product in the production of large and medium-sized high-quality forgings. Before pouring the die-cast steel ingot by pouring, it is necessary to perform operations such as setting the steel ingot mold and the center pouring pipe. In particular, when the center pouring pipe is filled with river sand, the sand hopper switch is manually operated, the operating environment is dangerous, and it is easy to leak river sand into the center pouring pipe brick. If it is not cleaned properly, foreign inclusions will be generated inside the steel ingot, affecting the quality of the forging products.
[0003] In the related art, there is a method of using a single brick to be inverted on the funnel brick at the top of the built pipe brick to block the opening of the funnel brick, and using a piece of cardboard to simply bend it into a semicircular guide plate, which is inserted into the gap between the center injection pipe and the pipe brick, and the river sand is poured into the guide plate, which guides the river sand into the gap between the center injection pipe and the pipe brick to fill the sand and tighten it.
[0004] In the process of implementing the embodiments of the present disclosure, it is found that there are at least the following problems in the related art:
[0005] During the process of injecting river sand, the continuous scouring of river sand on individual bricks makes it easy for individual bricks to shift. The strength of the guide plate made of cardboard is also insufficient, and it is easy to bend and deform, increasing the risk of river sand entering the center injection pipe and affecting the injection quality. During the sand filling process, workers are required to operate at high places, which poses a great safety hazard.
[0006] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present application, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field. Utility Model Content
[0007] In order to provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. The summary is not an extensive review, nor is it intended to identify key / critical components or delineate the scope of protection of these embodiments, but rather serves as a prelude to the detailed description that follows.
[0008] The disclosed embodiment provides a sand filling device for a mold casting mid-cast pipe, so as to reduce the risk of river sand entering the interior of a pipe brick pouring channel, reduce the potential safety hazards of workers, and improve the filling quality.
[0009] In some embodiments, a sand filling device for a molded casting center injection pipe includes a pipe body and a pipe brick pouring channel, the pipe brick pouring channel is arranged inside the pipe body, and a river sand filling gap is defined between the inner wall of the pipe body and the outer wall of the pipe brick pouring channel, and includes: an outer baffle, a protective cover, and a positioning retaining ring. The outer baffle has an upper opening and a lower opening; the protective cover is arranged on the inner side of the lower opening of the outer baffle, connected to the edge of the lower opening, and a flow gap is defined between the outer edge of the protective cover and the edge of the lower opening of the outer baffle; the positioning retaining ring is sleeved on the outer periphery of the outer baffle, and in the vertical direction, the positioning retaining ring is located above the lower opening; wherein, when the lower opening of the outer baffle extends into the upper end of the pipe body, the protective cover is arranged on the upper end of the pipe brick pouring channel to seal it, and the flow gap is connected to the river sand filling gap, and the positioning retaining ring overlaps the upper side wall of the pipe body to form a positioning support.
[0010] Optionally, the protective cover is connected to the peripheral retaining tube via a fixing rod, one end of the fixing rod is connected to the edge of the open lower end of the peripheral retaining tube, and the other end of the fixing rod is connected to the outer edge of the protective cover.
[0011] Optionally, the protective cover is a conical structure, and the axis of the protective cover coincides with the axis of the peripheral retaining cylinder.
[0012] Optionally, the inner angle of the top end of the protective cover is greater than or equal to 20° and less than or equal to 160°.
[0013] Optionally, the flow area of the peripheral baffle cylinder gradually decreases in the direction from the upper end opening to the lower end opening.
[0014] Optionally, the angle between the axis of the peripheral retaining tube and the inner side wall of the peripheral retaining tube is greater than or equal to 2° and less than or equal to 30°.
[0015] Optionally, a raised limit plate is provided on the bottom side of the protective cover, and the limit plate protrudes downward along the edge of the lower side of the protective cover. When the protective cover is set on the upper port of the tube brick pouring channel to seal it, the raised limit plate is sleeved on the outer side of the upper port of the tube brick pouring channel.
[0016] Optionally, a handle is provided on the outer side wall of the peripheral retaining cylinder.
[0017] The sand filling device for the mold casting mid-filling pipe provided in the embodiment of the present disclosure can achieve the following technical effects:
[0018] When pouring river sand into the casting pipe, the lower end of the outer baffle is opened and extended into the upper port of the tube body. At this time, the protective cover is set at the upper port of the pipe brick pouring channel to block it. The sand bucket is lifted above the outer baffle, and the river sand is poured into the outer baffle through the sand bucket. The protective cover guides the river sand in the outer baffle so that the river sand flows into the filling gap between the tube body and the pipe brick pouring channel through the flow gap between the inner wall of the bottom end of the outer baffle and the protective cover. Due to the blocking of the protective cover, the river sand cannot flow into the pipe brick pouring channel. Since the positioning retaining ring is set on the outer periphery of the outer baffle, the positioning retaining ring cover on the upper end of the tube body provides positioning support for the outer baffle and the protective cover. In the process of injecting river sand, the risk of river sand scouring the protective cover and the outer baffle offset is reduced, the risk of river sand entering the interior of the pipe brick pouring channel is reduced, the safety hazard of the staff is reduced, and the pouring quality is improved.
[0019] The above general description and the following description are exemplary and explanatory only and are not intended to limit the present application. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] One or more embodiments are exemplarily described by corresponding drawings, which do not limit the embodiments. Elements with the same reference numerals in the drawings are shown as similar elements, and the drawings do not constitute a scale limitation, and wherein:
[0021] Figure 1 It is a structural schematic diagram of a sand filling device for a casting mid-filling pipe provided by an embodiment of the present disclosure;
[0022] Figure 2 It is a schematic diagram of the internal structure of a sand filling device for a mold casting mid-filling pipe provided by an embodiment of the present disclosure;
[0023] Figure 3 is a schematic structural diagram of another sand filling device for a mold casting mid-filling pipe provided by an embodiment of the present disclosure;
[0024] Figure 4 It is a schematic structural diagram of another sand filling device for a casting mid-filling pipe provided in an embodiment of the present disclosure.
[0025] Reference numerals:
[0026] 100, pipe body; 200, pipe brick pouring channel; 300, filling gap; 400, outer retaining cylinder; 410, positioning retaining ring; 420, fixing rod; 430, handle; 500, protective cover; 510, raised limit plate; 600, circulation gap. DETAILED DESCRIPTION
[0027] In order to be able to understand the features and technical contents of the embodiments of the present disclosure in more detail, the implementation of the embodiments of the present disclosure is described in detail below in conjunction with the accompanying drawings. The attached drawings are for reference only and are not used to limit the embodiments of the present disclosure. In the following technical description, for the convenience of explanation, a full understanding of the disclosed embodiments is provided through multiple details. However, one or more embodiments can still be implemented without these details. In other cases, to simplify the drawings, well-known structures and devices can be simplified for display.
[0028] The terms "first", "second", etc. in the specification and claims of the embodiments of the present disclosure and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchanged where appropriate, so as to describe the embodiments of the embodiments of the present disclosure described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.
[0029] In the embodiments of the present disclosure, the terms "upper", "lower", "inside", "middle", "outside", "front", "back" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. These terms are mainly intended to better describe the embodiments of the present disclosure and their embodiments, and are not intended to limit the indicated devices, elements or components to have a specific direction, or to be constructed and operated in a specific direction. Moreover, in addition to being used to indicate directions or positional relationships, some of the above terms may also be used to indicate other meanings. For example, the term "upper" may also be used to indicate a certain dependency or connection relationship in certain circumstances. For those of ordinary skill in the art, the specific meanings of these terms in the embodiments of the present disclosure can be understood according to specific circumstances.
[0030] In addition, the terms "disposed", "connected", and "fixed" should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present disclosure can be understood according to specific circumstances.
[0031] Unless otherwise stated, the term "plurality" means two or more.
[0032] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present disclosure may be combined with each other.
[0033] In the related art, a semicircular guide plate is formed by simply bending cardboard. The guide plate itself has low strength and is easily broken during the process of pouring river sand. Some river sand will flow out of the guide plate through the gaps in the cardboard, which not only reduces the amount of river sand poured and increases the pouring time, but also requires secondary cleaning of the scattered river sand.
[0034] Combination Figure 1-2 As shown, an embodiment of the present disclosure provides a sand filling device for a molded center casting pipe, the molded center casting pipe includes a pipe body 100 and a pipe brick pouring channel 200, the pipe brick pouring channel 200 is arranged inside the pipe body 100, and a river sand filling gap 300 is defined between the inner wall of the pipe body 100 and the outer wall of the pipe brick pouring channel 200, including: an outer baffle 400, a protective cover 500 and a positioning baffle ring 410. The outer retaining tube 400 has an upper opening and a lower opening; the protective cover 500 is arranged on the inner side of the lower opening of the outer retaining tube 400 and is connected to the edge of the lower opening, and a flow gap 600 is defined between the outer edge of the protective cover 500 and the edge of the lower opening of the outer retaining tube 400; the positioning retaining ring 410 is sleeved on the outer periphery of the outer retaining tube 400, and in the vertical direction, the positioning retaining ring 410 is located above the lower opening; wherein, when the lower opening of the outer retaining tube 400 extends into the upper port of the pipe body 100, the protective cover 500 is covered on the upper port of the pipe brick pouring channel 200 to seal it, and the flow gap 600 is connected to the river sand filling gap 300, and the positioning retaining ring 410 overlaps the upper side wall of the pipe body 100 to form a positioning support.
[0035] By using the sand filling device for the mold casting mid-pouring pipe provided by the embodiment of the present disclosure, when river sand is poured into the mold casting mid-pouring pipe, the lower end opening of the outer baffle tube 400 can be extended into the upper port of the tube body 100. At this time, the protective cover 500 is covered at the upper port of the pipe brick pouring channel 200 to block it, and the sand hopper is hoisted above the outer baffle tube 400. The river sand is poured into the outer baffle tube 400 through the sand hopper. The protective cover 500 guides the river sand in the outer baffle tube 400 so that the river sand flows into the filling gap 300 between the tube body 100 and the pipe brick pouring channel 200 through the flow gap 600 between the inner side wall at the bottom end of the outer baffle tube 400 and the protective cover 500. Due to the blocking of the protective cover 500, the river sand cannot flow into the pipe brick pouring channel 200. Since the positioning retaining ring 410 is arranged on the outer periphery of the outer retaining cylinder 400, the positioning retaining ring 410 is covered on the upper end of the tube body 100 to provide positioning support for the outer retaining cylinder 400 and the protective cover 500. During the process of injecting river sand, the risk of river sand scouring the protective cover 500 and the outer retaining cylinder 400 is reduced, and the risk of river sand entering the interior of the pipe brick pouring channel 200 is reduced, thereby reducing the safety hazards of the staff and improving the pouring quality.
[0036] Optionally, the length of the protective cover 500 in the vertical direction is less than or equal to one-half of the length of the peripheral retaining tube 400 in the vertical direction, and greater than or equal to one-quarter of the length of the peripheral retaining tube 400 in the vertical direction. In this way, when the length of the protective cover 500 in the vertical direction is greater than one-half of the length of the peripheral retaining tube 400 in the vertical direction, the length of the protective cover 500 in the vertical direction is relatively long, the center of gravity is relatively high, and during the process of pouring river sand, the protective cover 500 is washed by the river sand, and the risk of deviation is relatively high. When the length of the protective cover 500 in the vertical direction is less than one-quarter of the length of the peripheral retaining tube 400 in the vertical direction, during the process of pouring river sand, due to the relatively short length of the protective cover 500 in the vertical direction, the guiding effect of the river sand between the protective cover 500 and the peripheral retaining tube 400 is poor, the risk of river sand accumulation between the protective cover 500 and the peripheral retaining tube 400 is increased, and the speed of pouring river sand is reduced. It can be seen from this that it is more reasonable that the length of the protective cover 500 in the vertical direction is less than or equal to half of the length of the outer retaining cylinder 400 in the vertical direction, which reduces the risk of the protective cover 500 being eroded by river sand and causing displacement, reduces the risk of river sand accumulating between the protective cover 500 and the outer retaining cylinder 400, and increases the speed of pouring river sand.
[0037] Optionally, the outer retaining tube 400, the positioning retaining ring 410 and the protective cover 500 are all made of steel. In this way, the outer retaining tube 400, the positioning retaining ring 410 and the protective cover 500 have relatively high strength, and when the amount of river sand poured is large and the scouring force is large, the risk of the outer retaining tube 400, the positioning retaining ring 410 and the protective cover 500 breaking due to their low strength is reduced.
[0038] Optionally, the distance between the lower end face of the positioning retaining ring 410 and the lower end face of the peripheral retaining tube 400 is greater than or equal to 30 mm and less than or equal to 50 mm. In this way, when the positioning retaining ring 410 abuts against the upper end face of the pipe body 100 to provide positioning support for the peripheral retaining tube 400 and the protective cover 500, the lower end of the peripheral retaining tube 400 extends into the filling gap 300 between the pipe body 100 and the pipe brick pouring channel 200 for a long time. During the process of river sand pouring, when the peripheral retaining tube 400 and the protective cover 500 are displaced relative to the pipe body 100, the part of the peripheral retaining tube 400 extending into the filling gap 300 abuts against the inner side wall of the upper end of the pipe body 100 and provides a reaction force to prevent the peripheral retaining tube 400 and the protective cover 500 from continuing to move, thereby improving the stability of the peripheral retaining tube 400 and the protective cover 500 in guiding the river sand pouring, and reducing the time and frequency of the operator holding the peripheral retaining tube 400.
[0039] Optionally, the distance between the lower end face of the positioning retaining ring 410 and the lower end face of the peripheral retaining tube 400 is 40 mm. In this way, when the positioning retaining ring 410 abuts against the upper end face of the pipe body 100 to provide positioning support for the peripheral retaining tube 400 and the protective cover 500, the lower end of the peripheral retaining tube 400 extends into the filling gap 300 between the pipe body 100 and the pipe brick pouring channel 200 for a longer length, thereby improving the stability of the peripheral retaining tube 400 and the protective cover 500 in guiding the river sand pouring, and reducing the time and frequency of the operator holding the peripheral retaining tube 400.
[0040] Optionally, the axis of the positioning retaining ring 410 coincides with the axis of the peripheral retaining cylinder 400. In this way, the axis of the positioning retaining ring 410 coincides with the axis of the peripheral retaining cylinder 400, so that the positioning retaining ring 410 is better adapted to the peripheral retaining cylinder 400.
[0041] Combination Figure 3 As shown, optionally, the protective cover 500 is connected to the peripheral retaining tube 400 via a fixing rod 420, one end of the fixing rod 420 is connected to the edge of the open lower end of the peripheral retaining tube 400, and the other end of the fixing rod 420 is connected to the outer edge of the protective cover 500. In this way, the protective cover 500 and the peripheral retaining tube 400 are connected via the fixing rod 420, thereby improving the stability of the connection between the protective cover 500 and the peripheral retaining tube 400.
[0042] Optionally, a plurality of fixing rods 420 are provided. In this way, the protective cover 500 is connected to the peripheral retaining tube 400 through a plurality of fixing rods 420, and the positions of connection are more, the strength of the connection is improved, and the stability of the connection between the protective cover 500 and the peripheral retaining tube 400 is improved.
[0043] Optionally, five fixing rods 420 are provided and are evenly arranged between the protective cover 500 and the peripheral baffle 400. In this way, the protective cover 500 and the peripheral baffle 400 are connected by five fixing rods 420, and there are more connection positions, thereby improving the strength of the connection. The five fixing rods 420 are evenly arranged between the protective cover 500 and the peripheral baffle 400, and the distances between the fixing rods 420 are relatively uniform, so that the flow gap 600 is evenly separated, and larger solids in the river sand can be filtered, reducing the risk of larger objects passing through the flow gap 600.
[0044] Understandably, when pouring larger solids into the middle pouring pipe, the poured river sand will be partially unsolidified. When pouring molten steel into the pipe brick pouring channel 200, the unfilled pipe brick parts will increase the risk of pipe bricks bursting, cracking, misalignment, and steel drilling.
[0045] Optionally, the fixing rod 420 is made of steel bars, and the diameter of the steel bars is greater than or equal to 6 mm and less than or equal to 10 mm. In this way, the fixing rod 420 made of steel bars has a relatively high strength, which reduces the risk of breaking during the process of pouring river sand.
[0046] Optionally, the diameter of the steel bar is 8 mm. In this way, the diameter of the fixing rod 420 is relatively thick, and its own strength is relatively high, which reduces the risk of breakage during the process of pouring river sand.
[0047] Optionally, the protective cover 500 is a conical structure, and the axis of the protective cover 500 coincides with the axis of the peripheral baffle 400. In this way, the width of the flow gap 600 defined between the outer edge of the protective cover 500 and the lower open edge of the peripheral baffle 400 is relatively uniform, and the flow rate of river sand in the flow gap 600 in different areas is relatively uniform, thereby improving the effect of pouring river sand. The protective cover 500 is a conical structure, and the outer wall of the protective cover 500 has an inclined angle, which increases the speed of the river sand flowing from between the protective cover 500 and the peripheral baffle 400 to the filling gap 300 when guiding the poured river sand.
[0048] Specifically, the flow gap is defined between the outer edge of the lower end surface of the protective cover 500 and the edge of the lower open end of the peripheral blocking cylinder 400 .
[0049] Optionally, the protective cover 500 is made of steel material, and the protective cover wall thickness is 4 mm. In this way, the strength of the protective cover 500 itself is higher, reducing the risk of bending and breaking during the process of pouring river sand.
[0050] Optionally, the inner angle of the top of the protective cover 500 is greater than or equal to 20° and less than or equal to 160°. In this way, the outer wall of the protective cover 500 has an inclined angle, which increases the speed of the river sand flowing from between the protective cover 500 and the outer retaining cylinder 400 to the filling gap 300 when guiding the poured river sand.
[0051] Optionally, the inner angle of the top of the protective cover 500 is 30°. In this way, the outer wall of the protective cover 500 has a large inclination angle, which increases the speed of the river sand flowing from between the protective cover 500 and the outer retaining cylinder 400 to the filling gap 300 when guiding the poured river sand.
[0052] Optionally, the inner angle of the top of the protective cover 500 is 150°. In this way, the outer wall of the protective cover 500 has an inclined angle, which increases the speed of the river sand flowing from between the protective cover 500 and the peripheral retaining cylinder 400 to the filling gap 300 when guiding the poured river sand.
[0053] Optionally, the flow area of the peripheral baffle 400 gradually decreases from the upper end opening to the lower end opening. In this way, the opening of the peripheral baffle 400 gradually decreases downward, and the inner side wall of the peripheral baffle 400 has an inclined angle, which matches the inclined angle of the outer side wall of the protective cover 500, thereby increasing the speed of the river sand flowing from the protective cover 500 and the peripheral baffle 400 to the filling gap 300, and increasing the speed of pouring the river sand.
[0054] Optionally, the outer retaining tube 400 is made of steel material, and the wall thickness of the outer retaining tube 400 is 3 mm. In this way, the outer retaining tube 400 itself has high strength, reducing the risk of bending and breaking during the process of pouring river sand.
[0055] Optionally, the positioning retaining ring 410 is made of steel material, and the wall thickness of the positioning retaining ring 410 is 5 mm. In this way, the self-strength of the positioning retaining ring 410 is relatively high, and the bearing strength of providing positioning support to the peripheral retaining cylinder 400 and the protective cover 500 is relatively high.
[0056] Optionally, the angle between the axis of the outer baffle 400 and the inner wall of the outer baffle 400 is greater than or equal to 2° and less than or equal to 30°. In this way, the inner wall of the outer baffle 400 has an inclined angle, which matches the inclined angle of the outer wall of the protective cover 500, thereby increasing the speed of the river sand flowing from between the protective cover 500 and the outer baffle 400 to the filling gap 300 and increasing the speed of pouring the river sand.
[0057] Optionally, the angle between the axis of the outer baffle 400 and the inner wall of the outer baffle 400 is 4°. In this way, the inner wall of the outer baffle 400 has an inclined angle, which matches the inclined angle of the outer wall of the protective cover 500, thereby increasing the speed of the river sand flowing from between the protective cover 500 and the outer baffle 400 to the filling gap 300 and increasing the speed of pouring the river sand.
[0058] Optionally, a raised stop plate 510 is provided on the bottom side of the protective cover 500, and the raised stop plate 510 is raised downward along the edge of the lower side of the protective cover 500. When the protective cover 500 is covered on the upper end of the pipe brick pouring channel 200 to block it, the raised stop plate 510 is sleeved on the outer side of the upper end of the pipe brick pouring channel 200. In this way, the raised stop plate 510 is sleeved on the outer side of the top of the pipe brick pouring channel 200 to provide positioning for the protective cover 500 and the peripheral baffle 400, thereby reducing the risk of the protective cover 500 and the peripheral baffle 400 being offset during the process of pouring river sand.
[0059] Optionally, the length of the raised stop plate 510 in the vertical direction is greater than or equal to 15 mm and less than or equal to 30 mm. In this way, the length of the raised stop plate 510 in the vertical direction is relatively long, thereby increasing the length of the stop plate sleeved on the top outer side of the pipe brick pouring channel 200, and improving the stability of providing positioning for the protective cover 500 and the peripheral retaining cylinder 400.
[0060] Optionally, the length of the raised stop plate 510 along the vertical direction is 20 mm. In this way, the length of the raised stop plate 510 along the vertical direction is relatively long, thereby increasing the length of the stop plate sleeved on the top outer side of the pipe brick pouring channel 200, and improving the stability of providing positioning for the protective cover 500 and the peripheral retaining cylinder 400.
[0061] Optionally, the raised stopper plate 510 is made of steel material, and the wall thickness of the raised stopper plate 510 is 4 mm. In this way, the wall thickness of the raised stopper plate 510 corresponds to the wall thickness of the protective cover 500, so that the raised stopper plate 510 is better connected to the protective cover 500.
[0062] Optionally, the axis of the raised stop plate 510 coincides with the axis of the protective cover 500. In this way, when the raised stop plate 510 is sleeved on the outer side of the top end of the pipe brick pouring channel 200, the protective cover 500 is located above the pipe brick pouring channel 200, thereby improving the accuracy of the protective cover 500 in guiding the river sand to flow into the filling gap 300 when pouring the river sand.
[0063] Combination Figure 4 As shown, optionally, a handle 430 is provided on the outer side wall of the peripheral baffle 400. In this way, when pouring river sand, the operator can adjust or correct the position of the peripheral baffle 400 through the handle 430. The operator can also install or remove the protective cover 500 and the peripheral baffle 400 more conveniently through the handle 430.
[0064] Optionally, the distance between the connection between the handle 430 and the outer retaining tube 400 and the upper end surface of the outer retaining tube 400 is greater than or equal to 30 mm and less than or equal to 50 mm. In this way, the connection between the handle 430 and the outer retaining tube 400 and the upper end surface of the outer retaining tube 400 are spaced apart. During the process of pouring river sand, the connection between the handle 430 and the outer retaining tube 400 is relatively far away from the pouring sand bucket, and the operator is safer when adjusting or correcting the position of the outer retaining tube 400 through the handle 430.
[0065] Optionally, the distance between the connection of the handle 430 and the outer retaining tube 400 and the upper end surface of the outer retaining tube 400 is 40 mm. In this way, the connection of the handle 430 and the outer retaining tube 400 and the upper end surface of the outer retaining tube 400 are spaced apart. During the process of pouring river sand, the connection of the handle 430 and the outer retaining tube 400 is relatively far away from the pouring sand bucket, and the operator is safer when adjusting or correcting the position of the outer retaining tube 400 through the handle 430.
[0066] Optionally, the number of handles 430 is two.
[0067] The above description and the accompanying drawings sufficiently illustrate the embodiments of the present disclosure to enable those skilled in the art to practice them. Other embodiments may include structural and other changes. The embodiments represent only possible variations. Unless explicitly required, individual components and functions are optional, and the order of operations may vary. Portions and features of some embodiments may be included in or replace portions and features of other embodiments. The embodiments of the present disclosure are not limited to the structures described above and shown in the accompanying drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.
Claims
1. A sand filling device for a molded center-casting pipe, the molded center-casting pipe comprising a pipe body (100) and a pipe brick pouring channel (200), the pipe brick pouring channel (200) being arranged inside the pipe body (100), and a river sand filling gap (300) being defined between the inner side wall of the pipe body (100) and the outer side wall of the pipe brick pouring channel (200), characterized in that: include: The peripheral retaining cylinder (400) has an upper open end and a lower open end; A protective cover (500) is arranged inside the lower opening of the peripheral retaining tube (400) and connected to the edge of the lower opening. A flow gap (600) is defined between the outer edge of the protective cover (500) and the edge of the lower opening of the peripheral retaining tube (400). A positioning retaining ring (410) is sleeved on the outer circumference of the outer retaining cylinder (400), and in the vertical direction, the positioning retaining ring (410) is located above the lower end opening; In which, when the lower end of the outer retaining tube (400) is open and extends into the upper end of the tube body (100), the protective cover (500) is covered on the upper end of the pipe brick pouring channel (200) to seal it, the flow gap (600) is connected with the river sand filling gap (300), and the positioning retaining ring (410) overlaps the upper side wall of the tube body (100) to form a positioning support.
2. The sand filling device for the mold casting mid-filling pipe according to claim 1, characterized in that: The protective cover (500) is connected to the peripheral retaining tube (400) via a fixing rod (420), one end of the fixing rod (420) is connected to the open edge of the lower end of the peripheral retaining tube (400), and the other end of the fixing rod (420) is connected to the outer edge of the protective cover (500).
3. The sand filling device for the mold casting mid-filling pipe according to claim 1, characterized in that: The protective cover (500) is a conical structure, and the axis of the protective cover (500) coincides with the axis of the peripheral retaining cylinder (400).
4. The sand filling device for the mold casting mid-filling pipe according to claim 3, characterized in that: The inner angle of the top of the protective cover (500) is greater than or equal to 20° and less than or equal to 160°.
5. The sand filling device for mold casting mid-filling pipe according to claim 1, characterized in that: The flow area of the peripheral retaining cylinder (400) gradually decreases in the direction from the upper end opening to the lower end opening.
6. The sand filling device for the mold casting mid-filling pipe according to claim 5, characterized in that: The angle between the axis of the outer retaining cylinder (400) and the inner side wall of the outer retaining cylinder (400) is greater than or equal to 2° and less than or equal to 30°.
7. The sand filling device for a mold casting mid-filling pipe according to any one of claims 1 to 6, characterized in that: A raised stop plate (510) is provided on the bottom side of the protective cover (500), and the raised stop plate (510) is raised downward along the edge of the lower side of the protective cover (500). When the protective cover (500) is covered on the upper port of the pipe brick pouring channel (200) to seal it, the raised stop plate (510) is sleeved on the outer side of the upper port of the pipe brick pouring channel (200).
8. The sand filling device for a mold casting mid-filling pipe according to any one of claims 1 to 6, characterized in that: A handle (430) is provided on the outer side wall of the peripheral retaining cylinder (400).