Liquid level switch and liquid storage tank

Abstract

The utility model discloses a liquid level switch and a liquid storage tank, and relates to the technical field of liquid level valves, the liquid level switch comprises a valve body, a floating ball, a connecting rod and a plug, the plug and the floating ball are fixedly connected to two ends of the connecting rod respectively, the connecting rod is connected to the valve body in a sliding mode, a conical first matching surface is arranged on the periphery of the plug, and a second matching surface is arranged on the inner periphery of the valve body. Fluid enters from the liquid inlet in the end, away from the floating ball, of the valve body and is discharged from the communicating holes in the circumferential wall of the valve body, and the liquid supply function is achieved. The floating ball floats on the liquid level, when the liquid level rises, the floating ball can move upwards, and when the first matching face is matched with the second matching face, the plug can plug the liquid inlet, so that supply of the fluid is stopped, and overflow caused by the fact that the liquid level in the container is too high is avoided. The liquid storage tank further comprises a tank body and a liquid inlet pipe, the mounting section of the liquid inlet pipe is inserted into the valve body, and when the liquid level is lowered, the bottom wall of the plug can be in press contact with the end face of the mounting section, so that the plug blocks the liquid inlet pipe, fluid in the liquid storage tank is prevented from flowing back from the liquid inlet pipe, and leakage is avoided.

Description

Technical Field

[0001] This utility model relates to the field of liquid level valve technology, and in particular to a liquid level switch and a liquid storage tank. Background Technology

[0002] In related technologies, for industries such as textiles that require the use of adhesives in processing, raw materials are first mixed in a mixing tank to produce adhesive, which is then injected into a storage device. This process eliminates air bubbles and ensures a smooth supply of adhesive. The storage device is used to transport the adhesive to downstream processing equipment. During operation, the adhesive level in the storage device needs to be kept stable within a certain range. If the adhesive level is too high, it will cause the adhesive to overflow, resulting in material waste and pollution of the production environment. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a liquid level switch and a liquid storage tank that can stabilize the liquid level of adhesive and prevent overflow.

[0004] A liquid level switch according to a first aspect of the present invention includes:

[0005] The valve body comprises a float, a connecting rod, and a plug. The plug and float are fixedly connected to the two ends of the connecting rod, which is slidably connected to the valve body. The outer circumference of the plug has a tapered first mating surface, and the inner circumference of the valve body has a second mating surface. The first mating surface is located at the end of the plug facing the float. Fluid enters from the inlet at the end of the valve body away from the float and exits from the connecting hole on the peripheral wall of the valve body. The float floats on the liquid surface. When the liquid level rises, the float can move upward. When the first mating surface mates with the second mating surface, the plug can seal the inlet.

[0006] A liquid level switch according to an embodiment of the present invention has at least the following beneficial effects:

[0007] This embodiment includes a valve body, a float, a connecting rod, and a plug. The plug and the float are fixedly connected to both ends of the connecting rod, which is slidably connected to the valve body. The outer circumference of the plug has a conical first mating surface, and the inner circumference of the valve body has a second mating surface. Fluid enters from the inlet at the end of the valve body away from the float and exits from the connecting hole on the peripheral wall of the valve body, thus achieving the fluid supply function. The float floats on the liquid surface. When the liquid level rises, the float can move upward. When the first mating surface mates with the second mating surface, the plug can seal the inlet, stopping the fluid supply and preventing the liquid level in the container from becoming too high and overflowing.

[0008] According to an embodiment of the first aspect of the present invention, a guide member is provided in the valve body, the outer peripheral wall of the guide member abuts against the inner peripheral wall of the valve body, and a connecting rod passes through the guide member.

[0009] According to an embodiment of the first aspect of the present invention, the valve body is provided with at least two guide members along its length, one of which is fixed to the end of the valve body away from the plug.

[0010] According to an embodiment of the first aspect of the present invention, the outer periphery of the float has a cylindrical side circumference, and the bottom of the float has a conical contact surface.

[0011] According to an embodiment of the first aspect of the present invention, both ends of the float are provided with locking members for fixed installation, and the connecting rod passes through the locking members, and the locking members can clamp the connecting rod.

[0012] According to an embodiment of the first aspect of the present invention, a fitting tube is provided inside the float, and the two ends of the fitting tube are fixedly connected to the two ends of the float. The inner peripheral wall of the fitting tube fits with the outer peripheral wall of the connecting rod.

[0013] According to an embodiment of the first aspect of the present invention, the connecting hole extends along the length direction of the valve body, and the minimum length of the connecting hole is not less than four-fifths of the maximum length of the valve body.

[0014] According to a second aspect of the present invention, a liquid storage tank is provided, including the above-mentioned liquid level switch, comprising:

[0015] The tank body is equipped with a liquid inlet pipe, which is fitted with a valve body. The liquid inlet pipe has an installation section that is inserted into the valve body. When the liquid level drops, the bottom wall of the plug can press against the end face of the installation section, thereby sealing the plug in the liquid inlet pipe.

[0016] The liquid storage tank according to the second aspect embodiment of the present invention has at least the following beneficial effects:

[0017] In this embodiment, the tank is equipped with an inlet pipe and a valve body. The inlet pipe has an installation section that is inserted into the valve body. When the liquid level drops, the bottom wall of the plug can press against the end face of the installation section, thereby sealing the plug in the inlet pipe to prevent the fluid in the storage tank from flowing back through the inlet pipe and to prevent leakage.

[0018] According to an embodiment of the second aspect of this utility model, the mounting section extends in the vertical direction, and the valve body is threadedly connected to the mounting section.

[0019] According to an embodiment of the second aspect of the present invention, when the first mating surface and the second mating surface are mated, the top wall of the float is not higher than the top edge of the tank.

[0020] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0022] Figure 1 This is an isometric view of the liquid storage tank in an embodiment of this utility model;

[0023] Figure 2 This is a cross-sectional view of the liquid storage tank in an embodiment of this utility model;

[0024] Figure 3 for Figure 2 A magnified view of A in the middle;

[0025] Figure 4 for Figure 2 A magnified view of B in the middle.

[0026] Figure label:

[0027] Tank body 100; Inlet pipe 101; Installation section 102; Drain pipe 103;

[0028] Valve body 110; float 111; connecting rod 112; plug 113; side panel 114; contact surface 115; locking element 116; first mating surface 117; second mating surface 118; protrusion 119; guide 120; connecting hole 121; liquid inlet 122; mating pipe 123. Detailed Implementation

[0029] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0030] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0031] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0032] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0033] In related technologies, for industries such as textiles that require the use of adhesives in processing, raw materials are first mixed in a mixing tank to produce adhesive, which is then injected into a storage device. This process eliminates air bubbles and ensures a smooth supply of adhesive. The storage device is used to transport the adhesive to downstream processing equipment. During operation, the adhesive level in the storage device needs to be kept stable within a certain range. If the adhesive level is too high, it will cause the adhesive to overflow, resulting in material waste and pollution of the production environment.

[0034] To solve the above problems, refer to Figures 1 to 4 An embodiment of the first aspect of this utility model provides a liquid level switch, which is installed inside the tank body 100 of a liquid storage tank. The switch includes a valve body 110, a float 111, a connecting rod 112, and a plug 113. The plug 113 and the float 111 are respectively fixedly connected to both ends of the connecting rod 112, with the float 111 located at the upper end of the connecting rod 112 and the plug 113 located at the lower end of the connecting rod 112. The connecting rod 112 is slidably connected to the valve body 110. The outer periphery of the plug 113 has a tapered first mating surface 117, and the inner periphery of the valve body 110 has a second mating surface 118. It is understood that fluid (i.e., glue) enters from the inlet 122 at the end of the valve body 110 away from the float 111 and exits from the connecting hole 121 on the peripheral wall of the valve body 110, thus achieving the liquid supply function. The float 111 floats on the liquid surface. When the liquid level rises, the float 111 can move upward. When the first mating surface 117 and the second mating surface 118 are mated, the plug 113 can seal the liquid inlet 122 to stop the fluid supply and prevent the liquid level in the container from being too high and causing overflow, so as to ensure production safety.

[0035] It is understood that, in the second aspect of this utility model, a liquid storage tank is provided, comprising a tank body 100 for storing adhesive, the tank body 100 having an inlet pipe 101 and an outlet pipe 103, the inlet pipe 101 communicating with the inner cavity of the tank body 100 from the side wall of the tank body 100, and the inlet pipe 101 having an mounting section 102 extending vertically, the mounting section 102 being detachably mounted on the mounting section 102. It is understood that the bottom end of the valve body 110 is connected to the mounting section 102 by a threaded connection.

[0036] Understandably, the maximum inner diameter of the mounting section 102 is smaller than the minimum inner diameter of the plug 113. Therefore, when the liquid level drops, the bottom wall of the plug 113 can press against the end face of the mounting section 102, thereby sealing the plug 113 against the inlet pipe 101. If no glue continues to flow into the inlet pipe 101, the plug 113 remains in contact with the end face of the mounting section 102, and the connection between the inlet pipe 101 and the valve body 110 is cut off. When glue enters from the inlet pipe 101 and pushes open the plug 113, it can disengage the plug 113 from the mounting section 102, thereby reconnecting the inlet pipe 101 and the valve body 110.

[0037] Understandably, the valve body 110 is provided with a guide 120, the outer peripheral wall of which abuts against the inner peripheral wall of the valve body 110. The connecting rod 112 passes through the guide 120, thereby ensuring that the connecting rod 112 can move stably as the float 111 moves up and down. Furthermore, the valve body 110 is provided with at least two guides 120 along its length, one of which is fixed to the end of the valve body 110 away from the plug 113, to further ensure the stable up and down movement of the connecting rod 112 and prevent the float 111 from floating.

[0038] Understandably, the valve body 110 has at least two connecting holes 121 on its peripheral wall, and a liquid inlet 122 is provided at the end of the valve body 110 away from the float 111. When the first mating surface 117 and the second mating surface 118 are not in contact, the adhesive can enter from the liquid inlet pipe 101 and enter the valve body 110 through the liquid inlet 122, flowing into the tank 100 through the connecting holes 121. Understandably, the connecting holes 121 extend along the length of the valve body 110, and the minimum length of the connecting holes 121 is not less than four-fifths of the maximum length of the valve body 110, to ensure good flow efficiency of the adhesive and avoid clogging.

[0039] Understandably, the valve body 110 has a protrusion 119 at the end opposite to the float 111. The protrusion 119 extends radially inward along the valve body 110, and the second mating surface 118 is located on the protrusion 119. When the drainage efficiency decreases, the inlet efficiency remains unchanged, and the liquid level rises, the float 111 moves upward until the first mating surface 117 mates with the second mating surface 118. At this point, the plug 113 can seal the inlet 122, stopping the supply of glue and preventing the liquid level in the container from becoming too high and causing overflow. At this time, the top wall of the float 111 is not higher than the top edge of the tank 100, thus ensuring that the liquid level does not exceed the top edge of the tank 100 to avoid overflow.

[0040] Understandably, the float 111 has a cylindrical side circumference 114, and a conical contact surface 115 at its bottom. In practice, the part of the float 111 that mainly contacts the adhesive is its bottom contact surface 115. Due to the high viscosity of the adhesive, the conical contact surface 115 reduces the possibility of the float 111 drifting on the liquid surface, thus ensuring the stability of the float 111. The cylindrical side circumference 114 on the float 111 simplifies the structure of the float 111, making it easier to manufacture and reducing manufacturing costs. Furthermore, both ends of the float 111 are provided with locking members 116 for fixed installation. The connecting rod 112 passes through the locking member 116, and the locking member 116 can clamp the connecting rod 112, thereby fixing the float 111 to the connecting rod 112. Understandably, the locking component 116 is equipped with a locking bolt. When the locking bolt is tightened, it can press against the end face of the connecting rod 112 to achieve a secure installation. At the same time, the detachable locking bolt allows the installation position of the float 111 to be adjusted at any time to determine the height of the maximum liquid level inside the tank 100. Furthermore, the float 111 is provided with a mating tube 123. The two ends of the mating tube 123 are fixedly connected to the two ends of the float 111. The inner peripheral wall of the mating tube 123 mates with the outer peripheral wall of the connecting rod 112, thereby facilitating the installation of the float 111 and the connecting rod 112. During the installation process, the connecting rod 112 can pass through the float 111 along the inner cavity of the mating tube 123, which helps to simplify the operation.

[0041] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A liquid level switch, characterized in that, include: The valve comprises a valve body, a float, a connecting rod, and a plug. The plug and the float are fixedly connected to both ends of the connecting rod, which is slidably connected to the valve body. The plug has a tapered first mating surface on its outer periphery, and the valve body has a second mating surface on its inner periphery. The first mating surface is located at the end of the plug facing the float. Fluid enters from the inlet at the end of the valve body away from the float and exits from the connecting hole on the peripheral wall of the valve body. The float floats on the liquid surface and can move upward when the liquid level rises. When the first mating surface mates with the second mating surface, the plug can seal the inlet.

2. A liquid level switch according to claim 1, characterized in that, The valve body is provided with a guide member, the outer peripheral wall of the guide member abuts against the inner peripheral wall of the valve body, and the connecting rod passes through the guide member.

3. A liquid level switch according to claim 2, characterized in that, The valve body is provided with at least two guides along its length, one of which is fixed to the end of the valve body away from the plug.

4. A liquid level switch according to claim 1, characterized in that, The float has a cylindrical side circumference and a conical contact surface at its bottom.

5. A liquid level switch according to claim 1, characterized in that, Both ends of the float are provided with locking components for fixed installation, and the connecting rod passes through the locking components, which can clamp the connecting rod.

6. A liquid level switch according to claim 1, characterized in that, The float is provided with a fitting tube, and the two ends of the fitting tube are fixedly connected to the two ends of the float. The inner peripheral wall of the fitting tube fits with the outer peripheral wall of the connecting rod.

7. A liquid level switch according to claim 1, characterized in that, The connecting hole extends along the length of the valve body, and the minimum length of the connecting hole is not less than four-fifths of the maximum length of the valve body.

8. A liquid storage tank, characterized in that, The liquid level switch includes any one of claims 1 to 7, the liquid level switch comprising a valve body, a float, a connecting rod, and a plug, the plug having a first mating surface, and the valve body having a second mating surface, comprising: The tank body is provided with a liquid inlet pipe, and the valve body is installed on the liquid inlet pipe. The liquid inlet pipe has an installation section, which is inserted into the valve body. When the liquid level drops, the bottom wall of the plug can press against the end face of the installation section, thereby sealing the plug in the liquid inlet pipe.

9. The liquid storage tank according to claim 8, characterized in that, The mounting section extends vertically, and the valve body is threadedly connected to the mounting section.

10. The liquid storage tank according to claim 8, characterized in that, When the first mating surface mates with the second mating surface, the top wall of the float is not higher than the top edge of the tank.

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