CN211103497U - Side shot-throwing port magnetic sealing device for kerbstone shot blasting machine - Google Patents
Side shot-throwing port magnetic sealing device for kerbstone shot blasting machine Download PDFInfo
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- CN211103497U CN211103497U CN201920887751.8U CN201920887751U CN211103497U CN 211103497 U CN211103497 U CN 211103497U CN 201920887751 U CN201920887751 U CN 201920887751U CN 211103497 U CN211103497 U CN 211103497U
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Abstract
The utility model discloses a ball mouth magnetic seal device is thrown to side for curb shot-blasting machine adopts the magnetic seal mode, through door shape PMKD, invert U-shaped magnet cover, magnet group, magnet cover shrouding and door shape throw ball mouth baffle and construct yoke and the pole shoe in the magnetic circuit, shield and throw the inboard magnetic field of ball mouth, in the work face construction process is thrown to the lateral wall, after the steel shot throws impact curb surface through the throwing ball wheel, can fully kick-back to the rebound chamber, retrieve the feed hopper through the negative pressure, get into duty cycle; a small amount of omitted steel shots are adsorbed and gathered around the sealing device by the sealing device to block shot blasting ports, so that the sealing degree of a working face is improved, and meanwhile, safety accidents caused by splashing of the steel shots are prevented.
Description
Technical Field
The invention relates to a side shot-blasting port magnetic sealing device of an engineering machinery curb shot blasting machine for road and bridge deck construction in road traffic engineering construction.
Background
The bridge structure is required to be adopted to connect two sections of roads in the construction of road traffic engineering, a bridge main body in the modern bridge construction technology is usually formed by a steel structure box girder, strip-shaped structures arranged on two sides of a bridge surface of the steel box girder and at the edge of a middle separation belt are called kerbs, the kerbs are also generally made by steel structures and are welded, fixed and connected with the steel box girder into a whole, the size of the cross section of each kerb is usually 180x350mm and the kerbs are distributed along the direction along the bridge direction in an extending way; the kerbstone is also a mark stone at the boundary of the edge of the steel box girder pavement and other structures, has the functions of intercepting and collecting rainwater on the pavement and beautifying road appearance, and simultaneously has good protection effect on the edge of the bridge deck; the pavement composite strength of the kerbstone and the road edge directly influences the protection effect of the kerbstone on the road edge, the side surface of the kerbstone and the surface of the roadbed are generally subjected to rough treatment before pavement construction of a steel bridge deck surface layer, and oil stains, impurities and the like on the surface are removed; so as to improve the connection strength of the processed surface and ensure the pavement quality of the bridge deck surface layer; in the prior art, a movable type curb shot blasting device is generally adopted for treating the surface of a curb, the device is provided with two shot blasting working surfaces which are perpendicular to each other, the bottom shot blasting working surface is used for performing shot blasting construction treatment on the edge of a plane of a bridge deck within a range of 300mm, and the side wall shot blasting working surface is used for performing shot blasting construction treatment on the side wall of the curb within a range of 60mm in height; the working principle is that shot blasting wheels rotating at high speed throw steel shots, the steel shots impact the surface to be processed to strip impurities, the steel shots rebound to a rebound chamber of equipment by virtue of force, a matched dust collector absorbs the steel shots back to a feeding hopper by adopting negative pressure, the impurities and dust are absorbed and discharged by the dust collector, and in order to enable the steel shots impacting the shot blasting surface to enter the rebound chamber to the maximum extent to carry out working circulation, the distance between a shot blasting port of a shot blasting machine and the surface to be constructed of the kerbstone must be shortened as much as possible; the negative pressure recovery is adopted to require the shot blasting working face to have higher tightness, in the construction process, the curb side wall shot blasting working face generally has a clearance of 5-15 mm from the side face of the shot blasting machine, the side wall shot blasting construction face cannot form a closed space by adopting a common sealing mode, so that the negative pressure recovery of steel shots and the discharge of impurities are met, the recovery utilization rate of the steel shots is influenced, the consumption of the steel shots is increased, and the steel shots which are not completely recovered can be splashed to cause injury to constructors.
Disclosure of Invention
The invention aims to solve the technical problem of providing a magnetic sealing device for a side shot blasting opening of a kerb shot blasting machine, which can seal the shot blasting opening, enhance the sealing degree of a working surface, improve the safety coefficient, has a simple structure and is reliable in sealing.
The invention discloses a magnetic sealing device for a side shot-blasting opening of a kerbstone shot-blasting machine, which is characterized in that: the device comprises a fixed bottom plate which can be fixedly connected with a machine body of the curb shot blasting machine, wherein the fixed bottom plate is made of a magnetic conductive material, and the middle part of the fixed bottom plate is provided with a dovetail-shaped open slot with the same shape as the cross section of a shot blasting cavity inside the curb shot blasting machine, so that the fixed bottom plate is of a gate-shaped structure with a downward opening; the inner side surface of the fixed bottom plate is tightly attached to the machine body of the curb shot blasting machine, the outer side surface of the fixed bottom plate is provided with an inverted U-shaped magnet group, a magnet cover is arranged outside the magnet group, and the magnet group is packaged outside the fixed bottom plate through an inverted U-shaped magnet cover sealing plate; a shot blasting port baffle is also arranged on the outer side of the magnet cover sealing plate, and a dovetail-shaped open slot with the shape consistent with that of the fixed bottom plate is arranged in the middle of the shot blasting port baffle, so that the shot blasting port baffle is also of a door-shaped structure with a downward opening;
the magnet group comprises a plurality of magnet blocks, and the polarities of the magnet blocks are staggered and combined according to the sequence of S/N/S/N to form the magnet group;
two side edges of the dovetail-shaped open slot of the fixed bottom plate are oblique edges, the oblique angles of the oblique edges at the two sides are different, the oblique angle of the oblique edge at one side is 52 degrees, and the oblique angle of the oblique edge at the other side is 60 degrees;
the magnet cover comprises an inverted U-shaped inner frame and an inverted U-shaped outer frame which are arranged concentrically, the inner frame and the outer frame are fixedly connected through two sections of connecting bottom plates, the magnet cover is fixedly connected to the outer side surface of the fixing bottom plate through welding, and the magnet group is installed in the magnet cover in a limiting mode;
the magnet group is formed by combining a plurality of 60mmx20mmx20mm magnet blocks;
the edge of two sides of the fixed bottom plate is provided with a plurality of waist-round connecting holes which can be fixedly connected with the machine body of the curb shot blasting machine, and each waist-round hole is phi 10mm x20 mm;
the fixed baseplate material is a magnetic conduction material formed by Q235/t3 steel, the magnet block material is a neodymium iron boron magnet material, the magnet cover and the magnet cover sealing plate material are 304 stainless steel, and the shot blasting opening baffle plate material is high-strength wear-resistant alloy steel.
The invention relates to a magnetic sealing device for a side shot blasting port of a kerbstone shot blasting machine, which adopts a magnetic sealing mode, and a magnetic yoke and a pole shoe in a magnetic circuit are constructed by a fixed bottom plate, a magnet cover, a magnet group, a magnet cover sealing plate and a shot blasting port baffle plate to shield an inner side magnetic field of the shot blasting port; a small amount of omitted steel shots are adsorbed and gathered around the sealing device by the sealing device to block shot blasting ports, so that the sealing degree of a working face is improved, and meanwhile, safety accidents caused by splashing of the steel shots are prevented.
Drawings
FIG. 1 is a schematic perspective view of a side shot-blasting port magnetic sealing device for a kerbstone shot-blasting machine according to an embodiment of the present invention after being disassembled;
FIG. 2 is a schematic perspective view of a side shot-blasting port magnetic sealing device for a curb shot-blasting machine according to an embodiment of the invention after being assembled outside the side shot-blasting port of the curb shot-blasting machine;
FIG. 3 is a schematic perspective view of a fixed base plate of the magnetic sealing device for the side shot-blasting port of the kerb shot-blasting machine according to the embodiment of the invention;
FIG. 4 is a schematic perspective view of a magnet assembly of a side shot-blasting port magnetic sealing device for a kerbstone shot-blasting machine according to an embodiment of the present invention;
fig. 5 is a schematic perspective view of a shot blasting port baffle of the side shot blasting port magnetic sealing device for the kerbstone shot blasting machine according to the embodiment of the invention.
Detailed Description
As shown in the figure, a magnetic sealing device for a side shot blasting port of a kerbstone shot blasting machine is characterized in that a fixed bottom plate 5 is fixedly connected to a position, located on the outer side of the side shot blasting port of a shot blasting chamber inside the kerbstone shot blasting machine, of a kerbstone shot blasting machine body 10, and an open slot with a downward opening is formed in the middle of the fixed bottom plate 5, so that the fixed bottom plate is of a door-shaped structure with the downward opening; the side edges of the two sides of the open slot are oblique edges, so that the open slot in the middle of the fixed bottom plate forms a dovetail-shaped open slot, the oblique angles of the oblique edges of the two sides of the open slot are not consistent, namely the dovetail-shaped open slot is an open slot with two asymmetric sides, the oblique angle of the oblique edge of one side is 52 degrees, the oblique angle of the oblique edge of the other side is 60 degrees, and the cross-sectional shape of the open slot is consistent with that of a shot blasting cavity in the.
The inner side surface of the fixed bottom plate is tightly attached to a machine body 10 of the curb shot blasting machine, then the outer side surface of the fixed bottom plate is fixedly connected with a magnet cover 3 through welding, the magnet cover 3 comprises an inverted U-shaped inner frame and an outer frame which are arranged concentrically, the inner frame and the outer frame are fixedly connected through two sections of connecting bottom plates to form the magnet cover 3 with a limiting frame structure, the bottom side of the magnet cover 3 is fixedly connected to the outer side surface of the fixed bottom plate 5 through welding, a magnet group 4 is installed in the magnet cover 3 with the limiting frame structure in a limiting way, an inverted U-shaped magnet cover sealing plate 2 is packaged on the outer side of the magnet cover 3 and is fixedly connected into; finally, the shot blasting port baffle plate 1 is packaged on the outer side of the magnet cover sealing plate 2, and an open slot with a downward opening is also formed in the middle of the shot blasting port baffle plate 1, so that the shot blasting port baffle plate 1 is also of a door-shaped structure with a downward opening; the open slot is also a dovetail open slot with the same shape as the fixed bottom plate, the two sides of the open slot are asymmetric, the inclined angle of the inclined edge at one side is 52 degrees, the inclined angle of the inclined edge at the other side is 60 degrees, and the fixed bottom plate 5, the magnet cover 3 and the open slot at the middle part of the shot blasting opening baffle plate 1 are combined to form a shot blasting opening of the shot blasting machine.
Furthermore, the fixed bottom plate is made of a magnetic conductive material made of Q235/t3 steel with high magnetic conductivity, a plurality of waist-round connecting holes capable of being fixedly connected with the shot blasting machine body of the curb are formed in the edges of the two sides of the fixed bottom plate, each waist-round hole is phi 10mm x20mm, installation and connection are facilitated, and meanwhile a certain fine adjustment space is formed.
Further, the magnet group is composed of a plurality of 60mmx20mmx20mm magnet blocks, each magnet block is made of neodymium iron boron magnet material, and the polarities of the magnet blocks are staggered and combined according to the sequence of S/N/S/N to form the magnet group.
Still further, the magnet shield sealing plate material is 304/t1 stainless steel, and the shot blasting opening baffle plate material is Mn13 high-strength alloy steel.
The invention relates to a magnetic sealing device for a side shot blasting port of a kerbstone shot blasting machine, which adopts a magnetic sealing mode, and a magnetic yoke and a pole shoe in a magnetic circuit are constructed by a fixed bottom plate, a magnet cover, a magnet group, a magnet cover sealing plate and a shot blasting port baffle plate to shield an inner side magnetic field of the shot blasting port; a small amount of omitted steel shots are adsorbed and gathered around the sealing device by the sealing device to block shot blasting ports, so that the sealing degree of a working face is improved, and meanwhile, safety accidents caused by splashing of the steel shots are prevented.
The specific design concept is as follows:
the invention relates to an engineering machine for road and bridge deck construction, in particular to a magnetic sealing device for a side wall shot blasting port, which is a composition structure of a kerb shot blasting machine for steel bridge deck kerb shot blasting engineering construction.
In modern bridge construction technology, a bridge main body is mostly composed of steel structure box girders. The strip-shaped structures arranged on two sides and in the middle of the steel box girder bridge floor with the edges are called kerbs. The kerb is also made of steel structure and welded with the steel box girder into a whole, the cross-sectional dimension of the kerb is about 180x350mm, and the kerb is arranged along the bridge direction.
The kerbstone is a monument at the boundary of the edge of the steel box girder pavement and other structures, has the functions of intercepting and collecting rainwater on the pavement and beautifying the road appearance, and simultaneously has good protection effect on the edge of the bridge deck. The protection effect of the kerbstone on the road surface edge is directly influenced by the pavement composite strength of the kerbstone and the road edge, the side surface of the kerbstone and the surface of the roadbed are generally subjected to rough treatment before the pavement construction of a steel bridge deck surface layer, and oil stains, impurities and the like on the surface are removed. So as to improve the connection strength of the processed surface and ensure the pavement quality of the bridge deck. The current advanced method for processing the surface of the kerbstone adopts a movable kerbstone shot blasting device, the device is provided with two shot blasting working surfaces which are perpendicular to each other, the bottom shot blasting working surface is used for performing shot blasting construction processing on the edge of a bridge deck plane within the range of 300mm, and the side wall shot blasting working surface is used for performing shot blasting construction processing on the side wall of the kerbstone within the range of 60mm in height.
The invention aims to solve the technical problem of a sealing device for a shot blasting working surface of the side wall of a curb shot blasting machine.
The working principle of the plane shot blasting machine is that a shot blasting wheel rotating at a high speed casts steel shots, the steel shots impact the surface to be processed to strip impurities, then the steel shots rebound to a rebound chamber of the equipment by virtue of force, a matched dust collector absorbs the steel shots to return to a feeding hopper by adopting negative pressure, and the impurities and dust are absorbed and discharged by the dust collector. And the negative pressure recovery requires higher sealing degree of the shot blasting working surface. In the construction process, a gap of 5-15 mm is generally reserved between the shot blasting working face of the side wall of the curb and the side face of the shot blasting machine, and a common sealing mode cannot be adopted to enable the shot blasting working face of the side wall to form a closed space so as to meet negative pressure recovery of steel shots and impurity discharge. Not only can influence the recycling rate of the steel shots and increase the consumption of the steel shots, but also can cause damage to constructors due to splashing of the steel shots which are not fully recycled. In order to ensure that the kerbstone shot blasting machine meets the construction requirements, the invention aims to solve the problem of a reasonable and perfect sealing device for the side wall shot blasting working surface. The device requires in the work face work progress is thrown to the lateral wall, and the steel shot can fully kick-back to the rebound chamber after throwing the impact curb surface through throwing the impeller, retrieves through the negative pressure and returns the feed fill, gets into duty cycle. A small amount of omitted steel shots are adsorbed and gathered around the sealing device by the sealing device to block shot blasting ports, so that the sealing degree of a working face is improved, and safety accidents caused by splashing of the steel shots are avoided.
In particular to a magnetic sealing device for a side wall shot blasting port, which has simple structure and reliable sealing.
The invention discloses a magnetic sealing device for a shot blasting port on the side wall of a curb shot blasting machine, which mainly comprises a shot blasting port baffle 1, a magnet cover sealing plate 2, a magnet cover 3, a magnet group 4 and a fixed bottom plate 5.
The fixed base plate 5 is a basic member of the device, is made of Q235/t3 steel with high magnetic permeability, and forms a magnetic yoke in a magnetic circuit to ensure that the steel shots sufficiently rebound after impacting a processing surface. A dovetail groove which is consistent with the cross section curve of the inner cavity of the shot blasting chamber of the shot blasting machine is formed on the fixed bottom plate, the dovetail groove and the shot blasting port baffle form a shot blasting port of the shot blasting machine, the height of the dovetail groove is 70mm, the dovetail is asymmetrical, and the oblique angle of one side of the dovetail groove is 52 degrees; the other side bevel angle is 60 deg.. The fixed bottom plate is also provided with 4 10x20 oval through holes, the mounting position can be finely adjusted, and the magnetic sealing device and the shot blasting machine body can be accurately mounted.
The magnet group is made of neodymium iron boron magnet, so that steel shots after impacting the shot blasting surface enter the rebound chamber to the maximum extent to perform work circulation, the distance between a shot blasting port of the shot blasting machine and the surface to be constructed of the curb stone is required to be shortened as much as possible, and the thickness of the magnet group of the sealing device is required to be reduced as much as possible. And the reduction of the thickness of the magnet group can influence the adsorption capacity of the magnetic steel group, so that the sealing is not tight, and the recycling rate of steel shots is reduced. Through comparison of magnetic steel performances of various materials and a large number of research experiments, the neodymium iron boron magnet group with large coercive force is determined to be adopted as the magnetic sealing material of the sealing device, the magnet group is arranged along the door shape of the shot blasting opening, the thickness is 20mm, and the polarities of the magnet blocks are arranged in an S/N staggered manner.
The shot blasting opening baffle is made of Mn13 wear-resistant steel plates. The baffle plate is provided with an asymmetric dovetail groove consistent with the fixed bottom plate. And the fixed bottom plate and the shot blasting channel form a shot blasting channel for construction operation. The Mn13 steel sheet is high strength alloy steel material, has very strong wear resistance, can resist the ball material impact wear well, improves baffle component life.
The magnet group is fixed on the bottom plate by the magnet cover closing plate, and the magnet cover closing plate is welded with the fixed bottom plate by adopting a 304L stainless steel material, so that the magnet group can be correctly positioned and installed, and the effect of reasonably configuring a magnetic field is achieved.
According to special sealing requirements during construction operation of a side shot blasting port of a curb shot blasting machine, a magnetic sealing mode is adopted, and a magnetic yoke and a pole shoe in a magnetic circuit are reasonably configured to shield an inner side magnetic field of the shot blasting port, so that rebounded steel shots thrown by a shot blasting wheel can fully return to a rebound chamber to enter a working cycle, and meanwhile, the magnetic field intensity outside the shot blasting port is expanded, so that a small amount of steel shots which are absorbed and omitted by negative pressure are adsorbed outside the shot blasting port by utilizing magnetic force, the construction surface is successfully plugged, the sealing degree of a shot blasting construction surface of a curb side wall is increased, and personal injury to constructors due to steel shot splashing caused by incomplete recovery can be avoided.
The specific technical structure is as follows:
a magnetic sealing device for side wall shot blasting ports of a kerbstone shot blasting machine is used for steel bridge deck edges and kerbstone shot blasting construction equipment. Comprises a fixed bottom plate 5; a magnet group 4; a magnet cover 3; a magnet cover closing plate 2; shot blasting port baffle 1 and the like.
The fixed bottom plate 5 is a bearing foundation of the magnetic sealing device and a connecting component of the magnetic sealing device and the shot blasting machine body. Is made of Q235 magnetic conductive material. The plane of the fixing plate is provided with a dovetail groove which is consistent with the curve of the shot-blasting inner cavity of the kerbstone shot blasting machine, the dovetail groove is designed asymmetrically, and the oblique angle of one side is 52 degrees; the oblique angle of the other side is 60 degrees, and the oblique angle and the shot blasting port baffle form a shot blasting channel of the shot blasting machine. And 4 elliptical holes 10x20mm are additionally arranged for positioning and mounting the magnetic sealing device and the shot blasting machine body. The fixing plate is provided with enough space positions for mounting and fixing the magnetic steel group.
The magnet group is made of neodymium iron boron magnet materials, the size (length x width x thickness) of the magnet blocks is 60mmx20mmx20mm, the polarities of the magnet blocks are arranged in an S/N staggered mode, and the magnet group is arranged along a dovetail groove-shaped shot blasting opening door shape.
The magnet cover is made by 5 trade marks 304, 1 mm's stainless steel board, and 4 narrow strip shaped steel boards constitute the cover frame that the cross-section is the inversion U-shaped and weld with PMKD for the location and the installation of magnet group, and the magnet cover shrouding encapsulates in the magnet cover outside.
The shot blasting opening baffle is made of high-strength alloy steel Mn13 and has strong wear resistance. The shot blasting opening baffle is provided with a dovetail groove consistent with the fixed base plate, the dovetail is an asymmetric dovetail, the height of the dovetail is 70mm, the oblique angle of one side is 52 degrees, and the oblique angle of the other side is 60 degrees.
Claims (7)
1. The utility model provides a side shot-blasting mouth magnetic seal device for curb shot-blasting machine which characterized in that: the device comprises a fixed bottom plate which can be fixedly connected with a machine body of the curb shot blasting machine, wherein the fixed bottom plate is made of a magnetic conductive material, and the middle part of the fixed bottom plate is provided with a dovetail-shaped open slot with the same shape as the cross section of a shot blasting cavity inside the curb shot blasting machine, so that the fixed bottom plate is of a gate-shaped structure with a downward opening; the inner side surface of the fixed bottom plate is tightly attached to the machine body of the curb shot blasting machine, the outer side surface of the fixed bottom plate is provided with an inverted U-shaped magnet group, a magnet cover is arranged outside the magnet group, and the magnet group is packaged outside the fixed bottom plate through an inverted U-shaped magnet cover sealing plate; the outer side of the magnet cover sealing plate is also provided with a shot blasting port baffle, and the middle part of the shot blasting port baffle is provided with a dovetail-shaped open slot with the shape consistent with that of the fixed bottom plate, so that the shot blasting port baffle is also of a door-shaped structure with a downward opening.
2. The magnetic sealing device for the side shot-blasting port of the kerb shot-blasting machine as recited in claim 1, wherein: the magnet group comprises a plurality of magnet blocks, and the polarities of the magnet blocks are staggered and combined according to the sequence of S/N/S/N to form the magnet group.
3. The magnetic sealing device for the side shot-blasting port of the kerb shot-blasting machine as recited in claim 1, wherein: the two side edges of the dovetail-shaped open slot of the fixed bottom plate are oblique edges, the oblique angles of the oblique edges at the two sides are not consistent, the oblique angle of the oblique edge at one side is 52 degrees, and the oblique angle of the oblique edge at the other side is 60 degrees.
4. The magnetic sealing device for the side shot-blasting port of the kerb shot-blasting machine as recited in claim 2, wherein: the magnet cover comprises an inverted U-shaped inner frame and an inverted U-shaped outer frame which are arranged concentrically, the inner frame and the outer frame are fixedly connected with the bottom plate through two sections of connecting bottom plates, the magnet cover is fixedly connected to the outer side surface of the fixing bottom plate through welding, and the magnet group is installed in the magnet cover in a limiting mode.
5. The magnetic sealing device for the side shot-blasting port of the kerb shot-blasting machine as recited in claim 4, wherein: the magnet group is composed of a plurality of magnet blocks of 60mmx20mmx20 mm.
6. The magnetic sealing device for the side shot-blasting port of the kerb shot-blasting machine as recited in claim 1, wherein: and the edges of two sides of the fixed bottom plate are provided with a plurality of waist-round connecting holes which can be fixedly connected with the machine body of the curb shot blasting machine, and each waist-round hole is phi 10mm x20 mm.
7. The magnetic sealing device for the side shot-blasting port of the kerb shot-blasting machine as recited in claim 5, wherein: the fixed baseplate material is a magnetic conduction material formed by Q235 steel, the magnet block material is a neodymium iron boron magnet material, the magnet cover and the magnet cover sealing plate material are 304 stainless steel, and the shot blasting opening baffle plate material is Mn13 high-strength alloy steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920887751.8U CN211103497U (en) | 2019-06-13 | 2019-06-13 | Side shot-throwing port magnetic sealing device for kerbstone shot blasting machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920887751.8U CN211103497U (en) | 2019-06-13 | 2019-06-13 | Side shot-throwing port magnetic sealing device for kerbstone shot blasting machine |
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| CN211103497U true CN211103497U (en) | 2020-07-28 |
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| CN201920887751.8U Active CN211103497U (en) | 2019-06-13 | 2019-06-13 | Side shot-throwing port magnetic sealing device for kerbstone shot blasting machine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110253458A (en) * | 2019-06-13 | 2019-09-20 | 镇江蓝舶科技股份有限公司 | A kind of side throwing ball mouth magnetic sealing means for kerbstone shot-blasting machine |
-
2019
- 2019-06-13 CN CN201920887751.8U patent/CN211103497U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110253458A (en) * | 2019-06-13 | 2019-09-20 | 镇江蓝舶科技股份有限公司 | A kind of side throwing ball mouth magnetic sealing means for kerbstone shot-blasting machine |
| CN110253458B (en) * | 2019-06-13 | 2024-05-14 | 镇江蓝舶科技股份有限公司 | Side shot blasting port magnetic sealing device for curb shot blasting machine |
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