Intelligent protection pressurizing type sanding device

Abstract

The utility model provides an intelligent protection pressurizing type sanding device. The intelligent protection pressurization type sanding device comprises a valve body, an inflation chamber cover, a pressing type sand raising assembly, a sand blowing adjusting assembly, an air inlet connector, a protection end pipe, a protection cover and an air pressure transmission assembly. The inflation chamber cover is installed at the inflation end of the valve body. The pressing type sand raising assembly is installed on the inflation chamber cover and communicates with the valve body. The sand blowing adjusting assembly is installed on the inflation chamber cover and communicates with the valve body. An air outlet of the air inlet connector is formed in the air inlet end of the inflation chamber cover and is provided with a flow dividing opening; the protection end pipe is connected with a sand outlet of the valve body through a sand conveying pipe. The protective cover is arranged on the protective end pipe, and the protective end of the protective cover can automatically cover the sand outlet of the protective end pipe; the pneumatic transmission assembly is arranged on the protection end pipe, the input end of the pneumatic transmission assembly is connected with the diversion opening through the air conveying pipe, and the output end of the pneumatic transmission assembly is connected with the protection cover and used for moving and opening the protection cover. According to the intelligent protection pressurizing type sanding device, the technical problem that the valve body and the end pipe are prone to being blocked is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of sand spreading devices, in particular to an intelligent protection pressurized sand spreading device. Background Art

[0002] The core function of the locomotive sand spreading device is to spread sand when the locomotive is started or running, thereby significantly improving the adhesion coefficient between the wheel and the track, thereby strengthening the adhesion between the two, and effectively preventing the locomotive from idling or sliding. Existing sand spreading devices are prone to clogging in rainy and snowy weather. On the one hand, the sand storage cavity of the sand spreading valve is easily blocked by wet sand with poor fluidity, and on the other hand, the end pipe is blocked.

[0003] In actual operation, the end pipes often have problems such as blockage and freezing of the sand outlet due to the influence of the environment or the driving direction. These problems not only seriously affect the normal operation of the locomotive, but also pose a potential threat to driving safety, especially in winter, when the temperature drops sharply, the sand outlet is easily blocked by freezing, resulting in the locomotive being unable to obtain sufficient sand at critical moments, increasing safety hazards.

[0004] After investigating, analyzing and discussing the on-site usage, the inventor finally discovered the main reason for the end pipe blockage: when all fasteners are in good sealing condition, the wheel hub of the running locomotive will splash or throw rainwater from the horseshoe sleeve steel pipe end into the sand outlet end pipe, causing rain and snow inside the steel pipe. When spreading sand, although most of the sand can be sprayed onto the working surface, a small amount of sand still adheres to the inner wall of the steel pipe due to the effect of rain. Over time, these wet sands gradually harden, making the flow of sand in the pipeline unsmooth, and then forming accumulation. Over time, more and more sand accumulates in the hose, eventually leading to blockage.

[0005] Therefore, it is necessary to develop a sand spreading device that can automatically solve the above-mentioned two blocking problems at the same time. Utility Model Content

[0006] The purpose of the utility model is to provide an intelligent protective pressurized sand spreading device to solve the above-mentioned technical problems.

[0007] Utility model solution:

[0008] The utility model provides an intelligent protective pressurized sand-spreading device, comprising a valve body, an inflation chamber cover, a push-type sand-raising component, a sand-blowing adjustment component, an air inlet joint, a protective end pipe, a protective cover and a pneumatic transmission component; the inflation chamber cover is installed at the inflation end of the valve body; the push-type sand-blowing component is installed at the inflation chamber cover and is connected to the valve body; the sand-blowing adjustment component is installed at the inflation chamber cover and is connected to the valve body; the air outlet of the air inlet joint is installed at the air inlet end of the inflation chamber cover, and it is provided with a diversion port; the protective end pipe is connected to the sand outlet of the valve body through a sand conveying pipe; the protective cover is arranged on the protective end pipe, and its protective end can automatically cover the sand outlet of the protective end pipe; the pneumatic transmission component is arranged on the protective end pipe, and its input end is connected to the diversion port through an air conveying pipe, and its output end is connected to the protective cover, which is used to move and open the protective cover.

[0009] Furthermore, the sand blasting adjustment assembly includes an adjustment wire and a sand blasting pipe; the sand blasting pipe is installed on the inner wall of the inflation chamber cover and extends into the valve body; the adjustment wire is installed on the outer wall of the inflation chamber cover and can be adjusted relative to the input port of the sand blasting pipe.

[0010] Furthermore, the input end of the sand blowing pipe extends into the inflation chamber cover, and a side inlet is provided on the side wall on the windward side of the input end, and the regulating wire can adjust the effective air intake area of ​​the side inlet.

[0011] Furthermore, the protective end pipe includes an output pipe and a protective pipe arranged at the output end of the output pipe; the sand outlet of the valve body is connected to the input end of the output pipe through a sand conveying pipe; the pneumatic transmission assembly and the protective cover are arranged on the protective pipe; the diversion port is connected to the input end of the output pipe through an air conveying pipe.

[0012] Furthermore, a mounting hole is opened in the tube wall of the protective tube along the length direction, and the pneumatic transmission assembly is arranged in the mounting hole; the pneumatic transmission assembly includes an air intake pipe and a connecting rod; the air intake pipe is installed at the inner end of the mounting hole, and is used to be connected to the diversion port through an air supply pipe; the connecting rod is slidably arranged in the mounting hole or the guide tube in the mounting hole, and its outer end is arranged on the inner wall of the protective cover; wherein, the exhaust gas from the air intake pipe acts on the inner end of the connecting rod to move it to open the protective cover.

[0013] Furthermore, the pneumatic transmission assembly also includes an intermediate sleeve and a closing spring; the intermediate sleeve is arranged in the mounting hole and is located on the exhaust port side of the air intake pipe, and the inner end of the connecting rod member is slidably passed through the intermediate sleeve; the closing spring is arranged between the inner end of the connecting rod member and the intermediate sleeve, and is used to pull the protective cover to automatically close through the connecting rod member.

[0014] Furthermore, the pneumatic transmission assembly also includes a connecting wire tube, which is connected to the air intake pipe and the intermediate sleeve.

[0015] Furthermore, the protective cover comprises a connected mounting portion and a horseshoe cover portion; the mounting portion is mounted on the protective end tube; the output port of the protective end tube adopts a horseshoe opening, and the horseshoe cover portion is covered on the horseshoe opening.

[0016] Furthermore, a hinged portion is convexly provided on the inner wall of the horseshoe cover, and the output end of the pneumatic transmission assembly is hinged to the hinged portion.

[0017] Furthermore, it also includes a filter element, which is installed at the sand inlet of the valve body and adopts a three-dimensional mesh structure.

[0018] Beneficial effects:

[0019] The utility model provides an intelligent protective pressurized sand spreading device. Aiming at the problem that ordinary sand spreading pipes are easily blocked in rainy and snowy weather, the pressurized sand spreading device adds an air path, which can clean the valve body and the inside of the end pipe by wind before sand spreading, effectively solving the problem of traditional sand discharging steel pipes being blocked by wet sand in rainy and snowy weather. In addition, when the air source pressure is set within the specified air pressure range, the user can also flexibly adjust the sand discharge volume within a certain range through the sand blowing adjustment component as needed. At the same time, the sand blowing adjustment component is not only used to pre-clean the pipeline, but also increases the pressure in the pipeline and promotes the flow of air in the pipeline, thereby enhancing the fluidity of sand particles in the sand discharging device. Finally, the sand particles are effectively discharged through the protective end pipe.

[0020] At the same time, during the sand spreading operation, the compressed gas will open the protective cover of the protective end pipe through the diversion port, the air pipe and the pneumatic transmission component; after the sand spreading operation is completed, the compressed gas in the air inlet pipeline will be safely released, and the protective end of the protective cover can automatically cover the sand outlet of the protective end pipe, which can effectively isolate the outside dust, rain and snow from invading the end pipe. The intelligent protective end pipe does not need to be connected to a cumbersome air circuit system. It only needs to divert the air circuit to achieve the access and use of the intelligent protective end pipe air circuit. This design greatly simplifies the use process, improves the convenience of operation, and also reduces the risk of possible incorrect connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 A schematic diagram of the structure of the intelligent protective pressurized sand spreading device provided in this embodiment;

[0023] Figure 2 A schematic diagram of the structure of the intelligent protective pressurized sand spreading device provided in this embodiment;

[0024] Figure 3 A schematic diagram of the structure of the intelligent protective pressurized sand spreading device provided in this embodiment;

[0025] Figure 4 A cross-sectional view of the relevant part of the valve body provided for this embodiment;

[0026] Figure 5 A schematic structural diagram of the protective end tube and pneumatic transmission assembly provided in this embodiment.

[0027] icon:

[0028] 100-valve body; 200-air chamber cover; 300-pressing sand raising assembly;

[0029] 400-sand blowing adjustment component; 410-adjusting wire; 420-sand blowing pipe; 421-side inlet;

[0030] 500-inlet connector; 510-diverter port;

[0031] 600-protection end tube; 610-output tube; 620-protection tube; 621-installation hole; 630-horseshoe mouth;

[0032] 700-protective cover; 710-installation portion; 720-horseshoe cover portion; 721-hinged portion;

[0033] 800-pneumatic transmission assembly; 810-air intake pipe; 820-connecting rod; 830-guide tube; 840-intermediate sleeve; 850-closing spring; 860-connecting wire tube;

[0034] 900-sand conveying pipe; 1000-air conveying pipe; 1100-filter element. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical scheme and advantages of the embodiment of the utility model clearer, the technical scheme in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. The components of the embodiment of the utility model described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0036] In the description of the present utility model, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present utility model.

[0037] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] In conjunction with the accompanying drawings, some embodiments of the present invention are described in detail below. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0039] This embodiment provides an intelligent protective pressurized sand spreading device, please refer to Figure 1-5As shown, it includes a valve body 100, an air-filling chamber cover 200, a push-type sand-raising component 300, a sand-blowing adjustment component 400, an air inlet joint 500, a protective end pipe 600, a protective cover 700 and a pneumatic transmission component 800; the air-filling chamber cover 200 is installed at the air-filling end of the valve body 100; the push-type sand-blowing component 300 is installed at the air-filling chamber cover 200 and communicates with the valve body 100; the sand-blowing adjustment component 400 is installed at the air-filling chamber cover 200 and communicates with the valve body 100; the air outlet of the air inlet joint 500 is installed At the air inlet end of the inflation chamber cover 200, a diversion port 510 is provided; the protective end tube 600 is connected to the sand outlet of the valve body 100 through a sand delivery pipe 900; the protective cover 700 is arranged on the protective end tube 600, and its protective end can automatically cover the sand outlet of the protective end tube 600; the pneumatic transmission assembly 800 is arranged on the protective end tube 600, and its input end is connected to the diversion port 510 through an air delivery pipe 1000, and its output end is connected to the protective cover 700, for moving and opening the protective cover 700.

[0040] Specifically, the sand blowing adjustment component 400 can be adjusted according to the actual sand output, so as to increase or decrease the sand output; if no sand is discharged, and the reason may be caused by the blockage of the sand blowing air nozzle, the operator only needs to press the sand poking steel needle on the outside of the sand blowing component with his hand, and the sand poking air blocking sand blowing hole on the inside will be quickly cleaned by the steel needle, and then the steel needle will move outward and reset under the action of the reset spring. The whole process takes a short time, only one or two minutes, and the operation is simple and efficient. Among them, the sand poking port of the sand spreading device has been optimized and adopts a horizontal sand poking method, which effectively solves the potential problems of improper nut installation or valve body 100 slippage caused by sand falling in the sand poking hole of the old vertical sand spreading valve, thereby ensuring the stability and reliability of the sand spreader. Among them, the valve body 100 has a straight-through output cavity, and the output end of the sand blowing adjustment component 400 is arranged parallel to the straight-through output cavity. Among them, the output cavity of the valve body 100 is optimized, and the movement path of the sand in the sand bin is changed from the original turning arc sand blowing method to the straight-through sand blowing method, which effectively reduces the wear of the sand outlet.

[0041] In this embodiment, the sand blasting adjustment assembly 400 includes an adjustment wire 410 and a sand blasting pipe 420; the sand blasting pipe 420 is installed on the inner wall of the inflation chamber cover 200 and extends into the valve body 100; the adjustment wire 410 is installed on the outer wall of the inflation chamber cover 200 and can be adjusted relative to the input port of the sand blasting pipe 420.

[0042] Specifically, when it is detected that the amount of sand discharged by the sand spreader is too little, the amount of sand can be increased by rotating the adjusting wire 410 counterclockwise, and conversely, the amount of sand can be reduced by rotating it clockwise.

[0043] In this embodiment, the input end of the sand blowing pipe 420 extends into the inflation chamber cover 200 , and a side inlet 421 is provided on the windward side wall of the input end. The regulating wire 410 can adjust the effective air intake area of ​​the side inlet 421 .

[0044] Specifically, based on the input port of the sand blasting pipe 420, a side inlet 421 is opened on the windward side wall of the end, thereby increasing the total area of ​​the inlet, increasing the adjustment range and improving the air intake volume.

[0045] In this embodiment, the protective end tube 600 includes an output tube 610 and a protective tube 620 arranged at the output end of the output tube 610; the sand outlet of the valve body 100 is connected to the input end of the output tube 610 through a sand delivery pipe 900; the pneumatic transmission assembly 800 and the protective cover 700 are arranged on the protective tube 620; the diversion port 510 is connected to the input end of the output tube 610 through an air delivery pipe 1000.

[0046] Specifically, the diversion port 510 is connected to the inlet end of the output pipe 610 through the air pipe 1000, and is used for secondary pressurized transportation of sand. At the same time, when the sand spreading is completed, the remaining sand in the pipeline can be further cleaned thoroughly.

[0047] In this embodiment, a mounting hole 621 is opened on the tube wall of the protective tube 620 along the length direction, and the pneumatic transmission assembly 800 is arranged in the mounting hole 621; the pneumatic transmission assembly 800 includes an air intake pipe 810 and a connecting rod 820; the air intake pipe 810 is installed at the inner end of the mounting hole 621, and is used to be connected to the diversion port 510 through the air supply pipe 1000; the connecting rod 820 is slidably arranged in the mounting hole 621 or the guide tube 830 in the mounting hole 621, and its outer end is arranged on the inner wall of the protective cover 700; wherein, the exhaust of the air intake pipe 810 acts on the inner end of the connecting rod 820 to move it to open the protective cover 700.

[0048] Specifically, the mounting hole 621 is convenient for accommodating and installing the pneumatic transmission assembly 800, and can also form a certain closed air path in cooperation with the pneumatic transmission assembly 800. When spreading sand, the exhaust of the air intake pipe 810 presses the inner end of the connecting rod 820 to slide outward against the elastic force of the spring, and when the sand is finished, the protective cover 700 can be automatically closed under the pull of the connecting rod 820.

[0049] In this embodiment, the pneumatic transmission assembly 800 also includes an intermediate sleeve 840 and a closing spring 850; the intermediate sleeve 840 is arranged in the mounting hole 621 and is located on the exhaust port side of the air intake pipe 810, and the inner end of the connecting rod member 820 is slidably passed through the intermediate sleeve 840; the closing spring 850 is arranged between the inner end of the connecting rod member 820 and the intermediate sleeve 840, and is used to pull the protective cover 700 to close automatically through the connecting rod member 820.

[0050] Specifically, the intermediate sleeve 840 and the closing spring 850 serve as a closing component, which is used to pull the protective cover 700 to automatically close through the connecting rod 820; this actively pulled closing structure, compared to the structure that closes by its own weight, can ensure the stable sealing of the protective cover 700 and fully avoid the problem of loose closing due to its shaking or other obstacles.

[0051] In this embodiment, the pneumatic transmission assembly 800 further includes a connecting wire tube 860 , and the connecting wire tube 860 is connected to the air inlet pipe 810 and the intermediate sleeve 840 .

[0052] Specifically, the connecting wire tube 860 can be threadedly connected to the intermediate sleeve 840 and the air intake pipe 810. This structure can increase the sealing performance and allow the air pressure to act on the inner end of the connecting rod member 820. At the same time, the connecting wire tube 860 can also serve as a limiter for the inner end of the connecting rod member 820 under the action of the spring; in addition, the inner end of the connecting rod member 820 adopts a connecting rod sleeve piston sleeve block structure or an integrated structure, which increases the sliding stability and sealing performance.

[0053] In this embodiment, the protective cover 700 includes a connected mounting portion 710 and a horseshoe cover portion 720 ; the mounting portion 710 is mounted on the protective end tube 600 ; the output port of the protective end tube 600 adopts a horseshoe opening 630 , and the horseshoe cover portion 720 is covered on the horseshoe opening 630 .

[0054] Specifically, the protective cover 700 and the protective end tube 600 adopt a horseshoe structure, which is conducive to sealing and increasing the sealing performance; the mounting portion 710 and the horseshoe cover portion 720 can adopt an integrally molded structure. At the same time, a reinforcing plate can be provided inside or on the inner wall of the horseshoe cover for abutting or hingedly connecting with the outer end of the connecting rod 820.

[0055] In this embodiment, a hinge portion 721 is protruding from the inner wall of the horseshoe cover portion 720 , and the output end of the pneumatic transmission assembly 800 is hinged to the hinge portion 721 .

[0056] Specifically, the output end is also the outer end of the connecting rod 820; wherein, the hinged portion 721 is protrudingly arranged and hinged to the outer end of the connecting rod 820. When spreading sand, under the action of compressed gas, the horseshoe cover is opened and folded upward under the action of the hinged portion 721 such as the hinged ear, so that a larger rotation amount can be achieved through a smaller axial movement, thereby more fully opening the protective cover 700 to facilitate sand discharge.

[0057] In this embodiment, a filter element 1100 is further included. The filter element 1100 is installed at the sand inlet of the valve body 100 and has a three-dimensional mesh structure.

[0058] Specifically, in order to prevent the sand spreader from clogging during use, a filtering device is installed for it. This device can filter the sand flowing into the sand spreader from the sand box, ensuring the quality of the sand flowing inside the sand spreader. In this way, not only the efficiency of the sand spreader is improved, but also its service life is extended, the parking time caused by clogging is reduced, and the overall operation continuity and stability are improved. In addition, through this filtering process, the sand spreader can work more stably, providing users with a smoother and more uniform distribution of sand, thereby ensuring the quality and efficiency of the work.

[0059] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. An intelligent protective pressurized sand spreading device, characterized in that: It comprises a valve body (100), an air-filling chamber cover (200), a press-type sand-raising assembly (300), a sand-blowing adjustment assembly (400), an air inlet joint (500), a protective end pipe (600), a protective cover (700) and a pneumatic transmission assembly (800); The inflation chamber cover (200) is installed on the inflation end of the valve body (100); The press-type sand-raising assembly (300) is installed on the inflation chamber cover (200) and is connected to the valve body (100); The sand blowing adjustment assembly (400) is installed on the inflation chamber cover (200) and is in communication with the valve body (100); The air outlet of the air inlet connector (500) is installed at the air inlet end of the air inlet chamber cover (200), and is provided with a diversion port (510); The protection end pipe (600) is connected to the sand outlet of the valve body (100) through a sand conveying pipe (900); The protective cover (700) is arranged on the protective end tube (600), and its protective end can automatically cover the sand outlet of the protective end tube (600); The pneumatic transmission assembly (800) is arranged on the protective end tube (600), and its input end is connected to the diversion port (510) through the air supply pipe (1000), and its output end is connected to the protective cover (700) for moving and opening the protective cover (700).

2. The intelligent protective pressurized sand spreading device according to claim 1, characterized in that: The sand blowing adjustment component (400) comprises an adjustment wire (410) and a sand blowing pipe (420); The sand blowing pipe (420) is installed on the inner side wall of the inflation chamber cover (200) and extends into the valve body (100); The adjusting wire (410) is installed on the outer side wall of the inflation chamber cover (200) and can be adjusted relative to the input port of the sand blowing pipe (420).

3. The intelligent protective pressurized sand spreading device according to claim 2, characterized in that: The input end of the sand blowing pipe (420) extends into the inflation chamber cover (200), and a side inlet (421) is provided on the side wall on the windward side of the input end. The regulating wire (410) can adjust the effective air intake area of ​​the side inlet (421).

4. An intelligent protective pressurized sand spreading device according to any one of claims 1 to 3, characterized in that: The protection end tube (600) comprises an output tube (610) and a protection tube (620) arranged at the output end of the output tube (610); The sand outlet of the valve body (100) is connected to the input end of the output pipe (610) through a sand delivery pipe (900); the pneumatic transmission assembly (800) and the protective cover (700) are arranged on the protective pipe (620); The diversion port (510) is connected to the input end of the output pipe (610) via a gas delivery pipe (1000).

5. The intelligent protective pressurized sand spreading device according to claim 4, characterized in that: The wall of the protection tube (620) is provided with a mounting hole (621) along the length direction, and the pneumatic transmission assembly (800) is arranged in the mounting hole (621); the pneumatic transmission assembly (800) comprises an air intake pipe (810) and a connecting rod (820); The air intake pipe (810) is installed at the inner end of the installation hole (621) and is used to be connected to the diversion port (510) through the air delivery pipe (1000); The connecting rod (820) is slidably disposed in the mounting hole (621) or the guide tube (830) in the mounting hole (621), and its outer end is disposed on the inner wall of the protective cover (700); The exhaust gas from the air intake pipe (810) acts on the inner end of the connecting rod (820) to move the connecting rod to open the protective cover (700).

6. The intelligent protective pressurized sand spreading device according to claim 5, characterized in that: The pneumatic transmission assembly (800) further includes an intermediate sleeve (840) and a closing spring (850); The intermediate sleeve (840) is arranged in the mounting hole (621) and is located at the exhaust port side of the air intake pipe (810), and the inner end of the connecting rod (820) is slidably inserted into the intermediate sleeve (840); The closing spring (850) is disposed between the inner end of the connecting rod (820) and the intermediate sleeve (840), and is used to pull the protective cover (700) to close automatically through the connecting rod (820).

7. The intelligent protective pressurized sand spreading device according to claim 6, characterized in that: The pneumatic transmission assembly (800) further comprises a connecting wire tube (860), wherein the connecting wire tube (860) is connected to the air intake pipe (810) and the intermediate sleeve (840).

8. An intelligent protective pressurized sand spreading device according to any one of claims 1-3 and 5-7, characterized in that: The protective cover (700) comprises a mounting portion (710) and a horseshoe cover portion (720) connected to each other; The mounting portion (710) is mounted on the protection end pipe (600); The output port of the protective end pipe (600) is a horseshoe opening (630), and the horseshoe cover (720) is covered on the horseshoe opening (630).

9. The intelligent protective pressurized sand spreading device according to claim 8, characterized in that: A hinged portion (721) is convexly provided on the inner wall of the horseshoe cover portion (720), and the output end of the pneumatic transmission component (800) is hingedly connected to the hinged portion (721).

10. An intelligent protective pressurized sand spreading device according to any one of claims 1-3, 5-7, and 9, characterized in that: It also includes a filter element (1100), which is installed at the sand inlet of the valve body (100) and adopts a three-dimensional mesh structure.

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