Anti-freezing and anti-breaking closestool electromagnetic valve

Abstract

An anti-freezing and anti-breaking closestool electromagnetic valve comprises a shell, a water inlet pipe arranged on the shell and water outlet pipes arranged on the two sides of the water inlet pipe and communicated with the water inlet pipe, a center valve is arranged on the water inlet pipe and comprises a valve body arranged in the water inlet pipe in a sleeved mode, and the outer wall of the valve body is connected with the water inlet pipe in a clamped mode through a concave-convex structure to form a double-layer nested structure. The concave-convex structure expands along with volume expansion of the frozen water body, after the containing cavity is filled with water, the containing cavity is placed in the environment of minus 20 DEG C, the water can be frozen, the volume of the water is expanded, and the water inlet pipe and the shell can expand along with expansion of the water body without being affected by the temperature through the arranged double-layer nesting and the concave-convex structure. The electromagnetic valve cannot be frozen and cracked in a low-temperature environment, the service life is prolonged, the use effect is improved, the maintenance and replacement cost is reduced, and the electromagnetic valve can be conveniently used by personnel for a long time.

Description

Technical Field

[0001] The utility model relates to a freeze-break-resistant toilet electromagnetic valve, belonging to the field of electromagnetic valves. Background Art

[0002] Solenoid valves are industrial equipment controlled by electromagnetics. They are basic automation components used to control fluids. They are actuators and are not limited to hydraulic or pneumatic. Solenoid valves can be used with different circuits to achieve the desired control, and the accuracy and flexibility of the control can be guaranteed. Different solenoid valves play a role in different positions of the control system. Solenoid valves are used in smart toilets to control automatic flushing. In an environment with a large flow rate, the existing solenoid valves have a large water inlet volume at the water inlet channel, so the valve body is set to a large volume. When used in a low-temperature environment, the frozen volume is easily increased, causing the valve body to freeze and crack, affecting the use effect. It is also difficult to repair and needs to be replaced, which results in a large cost loss. Utility Model Content

[0003] The purpose of the utility model is to overcome the shortcomings and deficiencies of the prior art and to provide a freeze-break-resistant toilet solenoid valve.

[0004] A freeze-break resistant toilet solenoid valve comprises a shell, a water inlet pipe arranged on the shell and water outlet pipes arranged on both sides of the water inlet pipe and connected with the shell, wherein the water inlet pipe is provided with a central valve, and the central valve comprises a valve body sleeved in the water inlet pipe, and the outer wall of the valve body is connected to the water inlet pipe by a concave-convex structure to form a double-layer nested structure, and the concave-convex structure expands together with the expansion of the water body when the water fills the cavity and is placed in an environment of minus 20 degrees Celsius, the water will freeze and expand in volume, and the double-layer nesting and concave-convex structure can make the water inlet pipe and the shell expand without being affected by the temperature and follow the expansion of the water body, so that the solenoid valve will not freeze and crack in a low temperature environment, thereby extending the service life, improving the use effect, reducing the maintenance and replacement cost, and facilitating long-term use by personnel.

[0005] Furthermore, the concave-convex structure includes a plurality of second protrusions arranged at intervals around the outer wall of the water inlet pipe, and an expansion gap is formed between the second protrusions. The expansion gap is used to expand together with the expansion of the freezing volume of the water body. Since the water inlet pipe and the valve body are generally made of plastic and have a certain elasticity, the setting of the expansion gap is conducive to adapting to the changes in the freezing volume of the water body, so that the solenoid valve will not crack and affect its use.

[0006] Furthermore, the width of the expansion gap on the left and right sides of the water inlet pipe is greater than the width of the expansion gap on the front and rear sides of the water inlet pipe. The width of the expansion gap can be adjusted according to actual design requirements, which is more conducive to adapting to different installation environments and installation requirements and helping to improve product practicality.

[0007] Preferably, the expansion gap is extended along the length direction to the bottom of the water inlet pipe and is provided with a stop surface, which can control the length of the expansion gap within a certain range and only needs to adapt to the radial volume change. It does not need to be set in other directions, thereby reducing processing requirements and processing difficulty.

[0008] Preferably, a plurality of first protrusions are provided at intervals around the outer wall of the valve body, and a groove matching and engaging with the first protrusions is provided on the inner wall of the water inlet pipe. The engagement between the groove and the first protrusion allows the valve body and the water inlet pipe to be stably engaged, forming a tight fit. When the water body freezes, they can jointly receive the expansion force generated by the volume change and disperse the expansion force, thereby increasing the service life and reducing damage.

[0009] Preferably, the groove is arranged at a corresponding position of the second protrusion, so that the first protrusion can be inserted into the second protrusion along the groove. Such a nested connection is helpful in helping to improve the tightness and firmness of the connection.

[0010] Furthermore, the second bump has the same shape and contour as the first bump, which is convenient for improving connection reliability and reducing processing difficulty.

[0011] Furthermore, the shape of the valve body and the water inlet pipe is a rounded rectangle, which can match the degree of expansion to minimize the possibility of rupture of the solenoid valve. The shape of the valve body and the water inlet pipe can also be other shapes, which can be adjusted according to design requirements.

[0012] Preferably, a water inlet channel and a water outlet channel are provided in the valve body, and a valve core for controlling the connection or disconnection between the water inlet channel and the water outlet channel is provided between the water inlet channel and the water outlet channel; the water outlet channel extends to both sides to communicate with the water outlet pipe.

[0013] Preferably, the central valve further comprises a valve cover sleeved on the water inlet pipe, and the valve cover is provided with an air inlet for normal use of the valve.

[0014] The beneficial effects of the utility model are as follows: after the water cavity is filled with water and placed in an environment of minus 20 degrees Celsius, the water will freeze and expand in volume. The double-layer nesting and the concave-convex structure can make the water inlet pipe and the shell expand without being affected by the temperature, and will not cause the solenoid valve to freeze and crack in a low temperature environment, thereby extending the service life, improving the use effect, reducing the cost of maintenance and replacement, and facilitating long-term use by personnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, without paying creative labor, other drawings obtained based on these drawings still belong to the scope of the utility model.

[0016] Figure 1 It is an exploded view of the main structure of the utility model;

[0017] Figure 2 It is a top view cross-sectional schematic diagram of the main structure of the utility model;

[0018] Figure 3 for Figure 2 A magnified detail of the center A;

[0019] Figure 4 It is a front cross-sectional schematic diagram of the main structure of the utility model;

[0020] In the figure, 1. shell; 2. water inlet pipe; 21. second protrusion; 22. expansion gap; 23. stop surface; 24. groove; 3. center valve; 31. valve body; 311. first protrusion; 312. water inlet channel; 313. water outlet channel; 314. valve core; 32. valve cover; 321. air inlet; 4. concave-convex structure; 5. water outlet pipe. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solutions and advantages of the utility model clearer, the utility model will be further described in detail below with reference to the accompanying drawings.

[0022] It should be noted that all expressions using "first" and "second" in the embodiments of the present invention are for distinguishing two non-identical entities with the same name or non-identical parameters. It can be seen that "first" and "second" are only for the convenience of expression and should not be understood as limitations on the embodiments of the present invention. The subsequent embodiments will not explain this one by one.

[0023] The directions and positions mentioned in the present invention, such as "upper", "lower", "front", "back", "left", "right", "inside", "outside", "top", "bottom", "side", etc., are only for reference to the directions or positions of the drawings. Therefore, the directions and positions used are used to explain and understand the present invention, but not to limit the scope of protection of the present invention.

[0024] like Figure 1-4As shown, an embodiment of the utility model is a freeze-resistant toilet solenoid valve, comprising a shell, a water inlet pipe arranged on the shell and water outlet pipes arranged on both sides of the water inlet pipe and connected with the shell, the water inlet pipe is provided with a central valve, the central valve comprises a valve body sleeved in the water inlet pipe, the outer wall of the valve body is connected with the water inlet pipe by a concave-convex structure to form a double-layer nested structure, the concave-convex structure expands together with the expansion of the water body when it freezes, and when the water fills the cavity and is placed in an environment of minus 20 degrees Celsius, the water will freeze and expand in volume, and the double-layer nesting and concave-convex structure can make the water inlet pipe and the shell expand without being affected by the temperature and follow the expansion of the water body, so that the solenoid valve will not freeze and crack in a low temperature environment, thereby extending the service life, improving the use effect, reducing the maintenance and replacement cost, and facilitating long-term use by personnel.

[0025] The concave-convex structure includes a plurality of second protrusions which are arranged at intervals around the outer wall of the water inlet pipe, and an expansion gap is formed between the second protrusions. The expansion gap is used to expand along with the expansion of the frozen volume of the water body. Since the water inlet pipe and the valve body are generally made of plastic and have a certain elasticity, the setting of the expansion gap is conducive to adapting to the changes in the frozen volume of the water body, so that the solenoid valve will not crack and affect its use.

[0026] The width of the expansion gap on the left and right sides of the water inlet pipe is greater than the width of the expansion gap on the front and rear sides of the water inlet pipe. The width of the expansion gap can be adjusted according to actual design requirements, which is more conducive to adapting to different installation environments and installation requirements and helping to improve product practicality.

[0027] The expansion gap extends along the length direction to the bottom of the water inlet pipe and is provided with a stop surface. The stop surface can control the length of the expansion gap within a certain range and only needs to adapt to the radial volume change. It does not need to be set in other directions, reducing processing requirements and processing difficulty.

[0028] A plurality of first protrusions are arranged at intervals around the outer wall of the valve body, and the inner wall of the water inlet pipe is provided with grooves matching and engaging with the first protrusions. The engagement between the grooves and the first protrusions enables the valve body and the water inlet pipe to be stably engaged, forming a tight fit. When the water body freezes, they can jointly receive the expansion force generated by the volume change and disperse the expansion force, thereby increasing the service life and reducing damage.

[0029] The groove is arranged at a corresponding position of the second protrusion, so that the first protrusion can be inserted into the second protrusion along the groove. Such a nested connection is helpful in helping to improve the tightness and firmness of the connection.

[0030] The second bump has the same shape and contour as the first bump, which is convenient for improving connection reliability and reducing processing difficulty.

[0031] The shape of the valve body and the water inlet pipe is a rounded rectangle, which can match the expansion degree to minimize the possibility of rupture of the solenoid valve. The shape of the valve body and the water inlet pipe can also be other shapes and can be adjusted according to design requirements.

[0032] A water inlet channel and a water outlet channel are arranged in the valve body, and a valve core for controlling the connection or disconnection of the water inlet channel and the water outlet channel is arranged between the water inlet channel and the water outlet channel; the water outlet channel extends to both sides and is connected to the water outlet pipe.

[0033] The central valve also includes a valve cover sleeved on the water inlet pipe, and the valve cover is provided with an air inlet for normal use of the valve.

[0034] The above disclosure is only a preferred embodiment of the present invention, and certainly cannot be used to limit the scope of rights of the present invention. Therefore, equivalent changes made according to the claims of the present invention are still within the scope covered by the present invention.

[0035] Although the present invention has been described with reference to several specific embodiments, it should be understood that the present invention is not limited to the specific embodiments disclosed. The present invention is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.

Claims

1. A freeze-proof toilet solenoid valve, characterized in that: The utility model comprises a shell, a water inlet pipe arranged on the shell and water outlet pipes arranged on both sides of the water inlet pipe and connected with the water inlet pipe. The water inlet pipe is provided with a central valve, and the central valve comprises a valve body sleeved in the water inlet pipe. The outer wall of the valve body is connected with the water inlet pipe by a concave-convex structure to form a double-layer nested structure. The concave-convex structure expands together with the expansion of the freezing volume of the water body.

2. The anti-freeze toilet solenoid valve according to claim 1, characterized in that: The concave-convex structure comprises a plurality of second convex blocks which are arranged around the outer wall of the water inlet pipe at intervals, and expansion gaps are formed between the second convex blocks. The expansion gaps are used to expand together with the expansion of the frozen volume of the water body.

3. The anti-freeze toilet solenoid valve according to claim 2, characterized in that: The width of the expansion gap located at the left and right sides of the water inlet pipe is greater than the width of the expansion gap located at the front and rear sides of the water inlet pipe.

4. The anti-freeze toilet solenoid valve according to claim 2 or 3, characterized in that: The expansion gap extends along the length direction to the bottom of the water inlet pipe and a stop surface is provided.

5. The anti-freeze toilet solenoid valve according to claim 1, characterized in that: The outer wall of the valve body is provided with a plurality of first protrusions at intervals and around each other, and the inner wall of the water inlet pipe is provided with grooves that match and engage with the first protrusions.

6. The anti-freeze toilet solenoid valve according to claim 5, characterized in that: The groove is arranged at a corresponding position of the second protrusion, so that the first protrusion can be inserted into the second protrusion along the groove.

7. The anti-freeze toilet solenoid valve according to claim 6, characterized in that: The second bump has the same shape as the first bump.

8. The anti-freeze toilet solenoid valve according to claim 1, characterized in that: The valve body and the water inlet pipe are in the shape of a rounded rectangle.

9. The anti-freeze toilet solenoid valve according to claim 1, characterized in that: The valve body is provided with a water inlet channel and a water outlet channel, and a valve core for controlling the connection or disconnection between the water inlet channel and the water outlet channel is provided between the water inlet channel and the water outlet channel; the water outlet channel extends to both sides to communicate with the water outlet pipe.

10. The anti-freeze toilet solenoid valve according to claim 1, characterized in that: The central valve also includes a valve cover sleeved on the water inlet pipe, and the valve cover is provided with an air inlet.

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