Device for preventing dust from entering electromagnetic valve

Abstract

The invention relates to the technical field of electromagnetic valves, in particular to an electromagnetic valve device for preventing dust from entering, which comprises an electromagnetic valve assembly, a dust removal assembly and a dust removal assembly, the dust entering prevention assembly comprises a quick connector installed at the exhaust hole, the end, away from the exhaust hole, of the quick connector is connected with a right-angle bent pipe, the end, away from the quick connector, of the right-angle bent pipe is connected with a transparent pipe body, and a plugging mechanism is installed at the bottom of the transparent pipe body; and a driving mechanism is arranged in the quick connector and is driven by gas exhausted from the exhaust hole to control the plugging mechanism to be opened or closed. The electromagnetic valve has the beneficial effects that through combination of the quick connector, the right-angle elbow and the transparent pipe body and dynamic control of the plugging mechanism, the possibility that dust enters the electromagnetic valve body is remarkably reduced; and the internal driving mechanism can automatically open and close the plugging mechanism according to the airflow of the exhaust hole, so that the smoothness of gas emission is ensured, and dust invasion in a non-working state is also prevented.

Description

Technical Field

[0001] The invention relates to the technical field of electromagnetic valves, in particular to a device for preventing dust from entering an electromagnetic valve. Background Art

[0002] Traditional electromagnetic pulse valves have an exhaust hole on the upper part of the valve body, which is a prerequisite for the normal operation of the solenoid valve. Generally, especially in bag dust removal systems, the solenoid valve is installed upright and the exhaust hole is in a horizontal state. It is not easy for debris or dust in the environment to enter the valve through this hole and cause the solenoid valve to leak.

[0003] However, the solenoid valve in the air sweeping system is installed in an oblique state. Dirt from the surrounding environment can easily invade the valve and cause air leakage in the solenoid valve. Once the air leakage occurs, the air sweeping system will be paralyzed and lose its function, thus causing blockage in the silo. Summary of the invention

[0004] Some simplifications or omissions may be made in this section and the abstract and title of the present application to avoid obscuring the purpose of this section, the abstract and the title of the invention, and such simplifications or omissions shall not be used to limit the scope of the present invention.

[0005] The invention aims to provide a device for preventing dust from entering into a solenoid valve.

[0006] Therefore, its purpose is to solve the problem that the solenoid valve in the air sweeping system is installed in an oblique state, and dirt in the surrounding environment can easily invade the valve and cause air leakage in the solenoid valve.

[0007] To solve the above technical problems, the present invention provides the following technical solutions: a solenoid valve device for preventing dust from entering, comprising a solenoid valve assembly, comprising a solenoid valve body, and an exhaust hole provided on the solenoid valve body; an anti-dust inlet assembly, comprising a quick connector installed at the exhaust hole, the end of the quick connector away from the exhaust hole is connected to a right-angle elbow, the end of the right-angle elbow away from the quick connector is connected to a transparent tube body, and a sealing mechanism is installed at the bottom of the transparent tube body; a driving mechanism is installed inside the quick connector, and the driving mechanism is driven by the gas discharged from the exhaust hole to control the opening or closing of the sealing mechanism; a damping assembly, comprising an arc-shaped resistance rod installed on the outside of the sealing mechanism, and a movable damping mechanism movably connected to the arc-shaped resistance rod is provided below the arc-shaped resistance rod, and the movable damping mechanism applies damping to the movement of the arc-shaped resistance rod.

[0008] As a preferred solution of the device for preventing dust from entering the solenoid valve of the present invention, the driving mechanism includes a shell fixed to the inside of the right-angle elbow, and two symmetrically distributed first cavities and second cavities are opened inside the shell. A rotating rod is rotatably connected to the middle of the shell, and the two ends of the rotating rod are respectively sealed and slid with the first cavity and the second cavity. A torsion spring is sleeved in the middle of the rotating rod, and the second cavity is filled with a driving medium.

[0009] As a preferred solution of the device for preventing dust from entering the solenoid valve of the present invention, a circular hole for accommodating gas discharge is opened inside the first cavity, a cover plate is installed on the side of the shell facing the exhaust hole, an air inlet hole connected to the first cavity is opened on the cover plate, and the circular hole and the air inlet hole are arranged alternately.

[0010] As a preferred solution of the device for preventing dust from entering the solenoid valve of the present invention, a driving hole is opened inside the second cavity, an air outlet end of the driving hole is connected to a hose, and an air outlet end of the hose is connected to a blocking mechanism.

[0011] As a preferred solution of the device for preventing dust from entering the solenoid valve of the present invention, the sealing mechanism includes a sealing shell fixedly connected to the transparent tube body, a rotating ring is provided on the movable sleeve outside the sealing shell, a connecting hole is opened on the sealing shell, a baffle plate for opening or closing the connecting hole is fixed on the rotating ring, and a rubber layer is fixed on the side of the baffle plate facing the connecting hole.

[0012] As a preferred solution of the device for preventing dust from entering the solenoid valve of the present invention, a driving groove is opened in the sealing shell, the rotating ring is partially located in the driving groove and is sealingly and slidingly connected to the driving groove, and the driving groove is connected to a hose for driving the rotating ring to rotate.

[0013] As a preferred solution of the device for preventing dust from entering the solenoid valve of the present invention, the movable damping mechanism includes an arc-shaped cylinder fixed on the sealing shell, a first damping chamber is opened inside the arc-shaped cylinder, a piston rod body is sealed and slidably connected inside the first damping chamber, the piston rod body is fixedly connected to the arc-shaped resistance rod, and the arc-shaped resistance rod is fixed to the rotating ring by bolts.

[0014] As a preferred solution of the device for preventing dust from entering the solenoid valve of the present invention, a second damping chamber is further provided inside the arc-shaped cylinder, the second damping chamber and the first damping chamber are connected through an opening, an annular elastic layer is fixed at the opening, an elastic airbag is fixed inside the second damping chamber, and the first damping chamber and the second damping chamber are both filled with buffering medium.

[0015] As a preferred solution of the device for preventing dust from entering the solenoid valve of the present invention, the deformation component includes a collecting cover threadedly installed on the bottom of the sealing shell, an upper elastic protective layer is fixed to the bottom of the collecting cover, a lower elastic protective layer is fixed under the upper elastic protective layer, and a display layer is provided between the upper elastic protective layer and the lower elastic protective layer.

[0016] As a preferred solution of the device for preventing dust from entering the electromagnetic valve of the present invention, a plurality of through holes communicating with the upper elastic protective layer are provided inside the collecting cover, and liquid crystal is filled inside the display layer.

[0017] The beneficial effect of the device for preventing dust from entering the solenoid valve of the present invention is that the possibility of dust entering the solenoid valve body is significantly reduced through the combination of the quick connector, the right-angle elbow and the transparent tube body, and the dynamic control of the blocking mechanism.

[0018] The internal driving mechanism can automatically open and close the sealing mechanism according to the airflow of the exhaust hole, ensuring smooth gas discharge and preventing dust invasion when not in operation.

[0019] The damping assembly controls the resetting speed of the rotating ring through the arc-shaped resistance rod and the movable damping mechanism, thereby avoiding the problem of incomplete gas exhaustion that may be caused by rapid resetting.

[0020] The deformation component provides an intuitive means of pressure monitoring through changes in the upper elastic protective layer and the display layer, and can promptly alert maintenance personnel when the gas pressure rises abnormally. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. Among them:

[0022] Figure 1 It is a schematic diagram of the overall structure of the device for preventing dust from entering the solenoid valve in the present invention.

[0023] Figure 2 It is a schematic diagram of the three-dimensional structure of the dust-proof component of the device for preventing dust from entering the solenoid valve in the present invention.

[0024] Figure 3 It is a schematic diagram of the driving mechanism structure of the solenoid valve dust prevention device in the present invention.

[0025] Figure 4 It is a schematic diagram of the structure of the blocking mechanism of the device for preventing dust from entering the solenoid valve in the present invention.

[0026] Figure 5 It is a schematic cross-sectional structural diagram of the damping component of the device for preventing dust from entering the solenoid valve in the present invention.

[0027] Figure 6 It is a schematic diagram of the structure of the deformation component of the device for preventing dust from entering the solenoid valve in the present invention.

[0028] In the figure:

[0029] 100, solenoid valve assembly; 101, solenoid valve body; 102, exhaust hole;

[0030] 200, dust ingress prevention component; 201, quick connector; 202, right-angle elbow; 203, transparent tube body; 204, blocking mechanism;

[0031] 201a, driving mechanism; 201b, housing; 201c, first cavity; 201d, second cavity; 201e, rotating rod; 201f, exhaust hole; 201g, driving hole;

[0032] 203a, hose;

[0033] 204a, blocking shell; 204b, rotating ring; 204c, communicating hole; 204d, shielding plate;

[0034] 300, damping assembly; 301, arc-shaped resistance rod; 302, movable damping mechanism;

[0035] 302a, arc-shaped cylinder; 302b, first damping chamber; 302c, piston rod body; 302d, second damping chamber; 302e, elastic airbag;

[0036] 302d-1, annular elastic layer;

[0037] 400, deformation component; 401, collection cover; 402, upper elastic protective layer; 403, display layer; 404, lower elastic protective layer. DETAILED DESCRIPTION

[0038] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0039] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0040] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0041] Example 1

[0042] Reference Figure 1-4, which is the first embodiment of the present invention, and provides a solenoid valve dust prevention device, comprising a solenoid valve assembly 100, which comprises a solenoid valve body 101, and an exhaust hole 102 provided on the solenoid valve body 101; an anti-dust inlet assembly 200, which comprises a quick connector 201 installed at the exhaust hole 102, and the end of the quick connector 201 away from the exhaust hole 102 is connected to a right-angle elbow 202, and the end of the right-angle elbow 202 away from the quick connector 201 is connected to a transparent tube body 203, and a blocking mechanism 204 is installed at the bottom of the transparent tube body 203; a driving mechanism 201a is installed inside the quick connector 201, and the driving mechanism 201a is driven by the gas discharged from the exhaust hole 102 to control the blocking mechanism 204 to open and discharge the gas;

[0043] The quick connector 201 is installed on the interface exhaust hole 102 of the solenoid valve body 101, providing a quick and safe connection method for easy maintenance and replacement. The right-angle elbow 202 is connected to the quick connector 201 to change the direction of the fluid, which may help reduce the direct entry of dust. The transparent tube body 203 is connected to the other end of the right-angle elbow 202, allowing observation of gas flow and inspection of dust accumulation. The blocking mechanism 204 is installed at the bottom of the transparent tube body 203 to prevent external dust from entering when gas flow is not required. Built into the quick connector 201, it is driven by the gas discharged from the exhaust hole 102 to control the opening and closing of the blocking mechanism 204. This means that when the solenoid valve is working, the exhausted airflow will push the blocking mechanism 204 to open and let the gas pass; when the solenoid valve is closed, there is no airflow drive, and the blocking mechanism 204 remains closed to prevent dust from entering.

[0044] The driving mechanism 201a includes a housing 201b fixed to the inside of the right-angle elbow 202, and two symmetrically distributed first cavities 201c and second cavities 201d are provided inside the housing 201b. A rotating rod 201e is rotatably connected in the middle of the housing 201b, and the two ends of the rotating rod 201e are respectively sealed and slid with the first cavity 201c and the second cavity 201d. A torsion spring is sleeved in the middle of the rotating rod 201e, and the second cavity 201d is filled with a driving medium, such as liquid or gas. A circular hole 201f for accommodating gas discharge is provided inside the first cavity 201c, and a cover plate is installed on the side of the housing 201b facing the exhaust hole 102, and an air inlet hole connected to the first cavity 201c is provided on the cover plate, and the circular hole 201f and the air inlet hole are arranged alternately. A driving hole 201g is provided inside the second cavity 201d, and the air outlet end of the driving hole 201g is connected to the hose 203a, and the air outlet end of the hose 203a is connected to the blocking mechanism 204. The blocking mechanism 204 includes a blocking shell 204a fixedly connected to the transparent tube body 203, a rotating ring 204b is movably sleeved on the outer side of the blocking shell 204a, a connecting hole 204c is provided on the blocking shell 204a, a shielding plate 204d for opening or closing the connecting hole 204c is fixed on the rotating ring 204b, and a rubber layer is fixed on the side of the shielding plate 204d facing the connecting hole 204c. A driving groove is provided in the blocking shell 204a, and the rotating ring 204b is partially located in the driving groove and is sealingly and slidably connected to the driving groove. The driving groove is connected to the hose 203a and is used to push the rotating ring 204b to rotate. A reset spring fixedly connected to the rotating ring 204b is provided in the driving groove.

[0045] In this embodiment, an internal thread is processed on the outside of the exhaust hole 102, and is connected and fixed to the outer thread of the exhaust hole 102 through a quick connector 201. A right-angle elbow 202 is fixed to the other end of the quick connector 201, so that external dust must pass through several turns to enter the solenoid valve body 101, thereby preventing air leakage caused by dust falling on the solenoid valve body 101.

[0046] In addition, refer to Figure 2-3When the pressure generated by the exhaust hole 102 overcomes the torsion of the torsion spring, the gas enters the first cavity 201c through the air inlet and pushes the rotating rod 201e to rotate to a preset angle, exposing the circular hole 201f to discharge the gas. At the same time, the second cavity 201d pushes the driving medium into the driving hole 201g. After being transported by the driving hole 201g, the driving medium will flow into the driving groove, pushing the shell 201b to rotate a preset angle. When the rotating ring 204b rotates, it drives the shielding plate 204d to move, thereby exposing the connecting hole 204c, so that the gas discharged from the exhaust hole 102 is finally discharged to the outside. Through the blocking mechanism 204, the shielding plate 204d can block the connecting hole 204c when the device is not in use, effectively preventing external dust from entering its interior, and the rubber layer on the shielding plate 204d can seal the connecting hole 204c to prevent dust from infiltrating.

[0047] By using a quick connector 201 with internal threads and a right-angle elbow 202 at the connection between the solenoid valve body 101 and the outside, the complexity of the path for dust to enter the solenoid valve body is increased, effectively preventing dust from falling directly into the inside of the solenoid valve, and reducing the problem of air leakage caused by dust; when the exhaust hole 102 is venting, the internal structure such as the torsion spring, the air inlet, the first cavity 201c, the rotating rod 201e and the exhaust hole 201f and other components realize the function of automatic control of gas emission, ensuring the smoothness and efficiency of the emission process; the connecting hole 204c is automatically blocked by the baffle plate 204d to prevent the invasion of external dust. At the same time, the rubber layer on the baffle plate enhances the sealing effect, ensuring the cleanliness and protection of the equipment when not in operation.

[0048] Example 2

[0049] Reference Figure 4-5, which is the second embodiment of the present invention, is different from the previous embodiment in that the damping assembly 300 includes an arc-shaped resistance rod 301 installed on the outside of the blocking mechanism 204, and a movable damping mechanism 302 movably connected to the arc-shaped resistance rod 301 is provided below the arc-shaped resistance rod 301, and the movable damping mechanism 302 applies damping to the movement of the arc-shaped resistance rod 301. The movable damping mechanism 302 includes an arc-shaped cylinder 302a fixed on the blocking shell 204a, and a first damping chamber 302b is provided inside the arc-shaped cylinder 302a, and a piston rod body 302c is sealed and slidably connected inside the first damping chamber 302b, and the piston rod body 302c is fixedly connected to the arc-shaped resistance rod 301, and the arc-shaped resistance rod 301 is fixed to the rotating ring 204b by bolts. A second damping chamber 302d is also opened inside the arc-shaped cylinder 302a. The second damping chamber 302d is connected to the first damping chamber 302b through an opening. An annular elastic layer 302d-1 is fixed at the opening. An elastic airbag 302e is fixed inside the second damping chamber 302d. The first damping chamber 302b and the second damping chamber 302d are both filled with a buffer medium, such as a viscous liquid.

[0050] In Example 1, if the shielding plate 204d is reset too quickly, the gas cannot be completely discharged from the inside of the transparent tube 203, which affects the use.

[0051] Therefore, by installing the arc resistance rod 301 on the rotating ring 204b, the arc resistance rod 301 can rotate synchronously with the rotating ring 204b, and the arc resistance rod 301 will pull the arc cylinder 302a when rotating, and the arc cylinder 302a will transport the buffer medium to the second damping chamber 302d. It should be noted that by installing the annular elastic layer 302d-1 at the opening, the annular elastic layer 302d-1 itself has elasticity, so the force applied to the buffer medium under the pulling of the arc resistance rod 301 is relatively large, so that the annular elastic layer 302d-1 is The arc resistance rod 301 is pushed to move, but at this time, the force exerted by the compressed elastic airbag 302e on the buffer medium is not enough to cause the annular elastic layer 302d-1 to deform. Therefore, the buffer medium flows into the first damping chamber 302b at a slower speed, delaying the reset speed of the rotating ring 204b, so that the gas in the transparent tube body 203 has enough time to be discharged to the outside.

[0052] By introducing the arc-shaped resistance rod 301 and related components, the resetting speed of the rotating ring 204b is effectively controlled, avoiding the problem of incomplete gas exhaust due to too fast resetting; the design of the buffer medium and the damping chamber ensures that the entire resetting process is smoother, reduces possible impact or vibration, and improves the stability and service life of the equipment; the elastic properties of the annular elastic layer 302d-1 allow it to automatically adjust the inner diameter of the opening according to the external pulling force, thereby achieving rapid entry and slow outflow of the buffer medium.

[0053] Example 3

[0054] Reference Figures 1 to 4 , which is the third embodiment of the present invention, and this embodiment further provides a solenoid valve device for preventing dust from entering. The deformation component 400 includes a collecting cover 401 threadedly mounted on the bottom of the blocking shell 204a, so the collected dust can be cleaned by disassembling the collecting cover 401. An upper elastic protective layer 402 is fixed to the bottom of the collecting cover 401, and a lower elastic protective layer 404 is fixed below the upper elastic protective layer 402. A display layer 403 is provided between the upper elastic protective layer 402 and the lower elastic protective layer 404. A plurality of through holes connected to the upper elastic protective layer 402 are provided inside the collecting cover 401, and liquid crystal is filled inside the display layer 403.

[0055] It can be seen from the above embodiments that when the baffle 204d fails to open normally, the internal gas pressure will continue to increase. In order to solve this problem, a deformation component 400 is added so that when the gas pressure in the transparent tube body 203 is too high, the pressure acts on the upper elastic protective layer 402 through the through hole. The upper elastic protective layer 402 deforms and expands, thereby squeezing the display layer 403, causing the display layer 403 to bulge outward. The color of the liquid crystal in the display layer 403 will change due to the force, thereby reminding external maintenance personnel to carry out repairs in time.

[0056] The deformation component 400 can respond instantly to changes in internal gas pressure. When the pressure exceeds the set threshold, the bulge and color change of the display layer 403 provide an obvious visual signal, which allows maintenance personnel to quickly identify the problem. By providing early warning, damage to other parts of the system caused by continued high pressure can be prevented, protecting the equipment from more serious damage and extending its service life.

[0057] Importantly, it should be noted that the construction and arrangement of the present application shown in a number of different exemplary embodiments are only exemplary. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible without substantially departing from the novel teachings and advantages of the subject matter described in the application (e.g., the size, scale, structure, shape and proportion of various elements, and parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, directional changes, etc.). For example, the element shown as integrally formed can be composed of multiple parts or elements, the position of the element can be inverted or otherwise changed, and the nature or number or position of the discrete element can be changed or changed. Therefore, all such modifications are intended to be included in the scope of the present invention. The order or sequence of any process or method steps can be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and is not only structurally equivalent but also equivalent structure. Without departing from the scope of the present invention, other replacements, modifications, changes and omissions can be made in the design, operating conditions and arrangement of the exemplary embodiments. Therefore, the invention is not limited to a specific embodiment, but extends to numerous modifications still falling within the scope of the appended claims.

[0058] Additionally, in order to provide a concise description of exemplary embodiments, all features of an actual embodiment (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention) may not be described.

[0059] It will be appreciated that in the development of any actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but will be a routine task of design, fabrication, and production for those of ordinary skill having the benefit of this disclosure without undue experimentation.

[0060] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A device for preventing dust from entering a solenoid valve, characterized in that: include, A solenoid valve assembly (100) comprises a solenoid valve body (101) and an exhaust hole (102) provided on the solenoid valve body (101); An anti-dust ingress component (200) comprises a quick connector (201) installed at the exhaust hole (102), one end of the quick connector (201) away from the exhaust hole (102) is connected to a right-angle elbow (202), one end of the right-angle elbow (202) away from the quick connector (201) is connected to a transparent tube body (203), and a blocking mechanism (204) is installed at the bottom of the transparent tube body (203); A driving mechanism (201a) is installed inside the quick connector (201), and the driving mechanism (201a) is driven by the gas discharged from the exhaust hole (102) to control the blocking mechanism (204) to open or close; The damping assembly (300) comprises an arc-shaped resistance rod (301) installed outside the blocking mechanism (204), a movable damping mechanism (302) movably connected to the arc-shaped resistance rod (301) is provided below the arc-shaped resistance rod (301), and the movable damping mechanism (302) applies damping to the movement of the arc-shaped resistance rod (301).

2. The device for preventing dust from entering a solenoid valve as claimed in claim 1, characterized in that: The driving mechanism (201a) comprises a shell (201b) fixed to the inside of the right-angle elbow (202); the shell (201b) is provided with two symmetrically distributed first cavities (201c) and second cavities (201d); a rotating rod (201e) is rotatably connected to the middle of the shell (201b); two ends of the rotating rod (201e) are respectively sealed and slidable with the first cavity (201c) and the second cavity (201d); a torsion spring is sleeved in the middle of the rotating rod (201e); and the second cavity (201d) is filled with a driving medium.

3. The device for preventing dust from entering a solenoid valve as claimed in claim 2, characterized in that: A circular hole (201f) for accommodating gas discharge is provided inside the first cavity (201c), a cover plate is installed on the side of the shell (201b) facing the exhaust hole (102), and an air inlet hole connected to the first cavity (201c) is provided on the cover plate, and the circular hole (201f) and the air inlet hole are arranged alternately.

4. The device for preventing dust from entering a solenoid valve as claimed in claim 3, characterized in that: A driving hole (201g) is provided inside the second cavity (201d), an air outlet end of the driving hole (201g) is in communication with a hose (203a), and an air outlet end of the hose (203a) is in communication with a blocking mechanism (204).

5. The device for preventing dust from entering a solenoid valve as claimed in claim 4, characterized in that: The blocking mechanism (204) comprises a blocking shell (204a) fixedly connected to the transparent tube body (203); a rotating ring (204b) is movably sleeved on the outside of the blocking shell (204a); a connecting hole (204c) is provided on the blocking shell (204a); a shielding plate (204d) for opening or closing the connecting hole (204c) is fixed on the rotating ring (204b); and a rubber layer is fixed on the side of the shielding plate (204d) facing the connecting hole (204c).

6. The device for preventing dust from entering a solenoid valve as claimed in claim 5, characterized in that: A driving groove is provided in the sealing shell (204a), and the rotating ring (204b) is partially located in the driving groove and is sealingly and slidably connected to the driving groove. The driving groove is connected to the hose (203a) to drive the rotating ring (204b) to rotate.

7. The device for preventing dust from entering a solenoid valve as claimed in claim 6, characterized in that: The movable damping mechanism (302) comprises an arc-shaped cylinder (302a) fixed on the sealing shell (204a), a first damping chamber (302b) is provided inside the arc-shaped cylinder (302a), a piston rod body (302c) is sealingly and slidably connected inside the first damping chamber (302b), the piston rod body (302c) is fixedly connected to the arc-shaped resistance rod (301), and the arc-shaped resistance rod (301) is fixed to the rotating ring (204b) by bolts.

8. The device for preventing dust from entering a solenoid valve as claimed in claim 7, characterized in that: A second damping chamber (302d) is also provided inside the arc-shaped cylinder (302a); the second damping chamber (302d) and the first damping chamber (302b) are connected via an opening; an annular elastic layer (302d-1) is fixedly provided at the opening; an elastic airbag (302e) is fixedly provided inside the second damping chamber (302d); and the first damping chamber (302b) and the second damping chamber (302d) are both filled with a buffer medium.

9. The device for preventing dust from entering a solenoid valve as claimed in claim 5, characterized in that: The deformation component (400) comprises a collecting cover (401) threadedly mounted on the bottom of the blocking shell (204a); an upper elastic protective layer (402) is fixed to the bottom of the collecting cover (401); a lower elastic protective layer (404) is fixed below the upper elastic protective layer (402); and a display layer (403) is provided between the upper elastic protective layer (402) and the lower elastic protective layer (404).

10. The device for preventing dust from entering a solenoid valve as claimed in claim 9, characterized in that: The collecting cover (401) is provided with a plurality of through holes in communication with the upper elastic protective layer (402), and the display layer (403) is filled with liquid crystal.

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