Removable level float and heater using the float

Abstract

This utility model belongs to the field of heater technology, and particularly relates to a detachable liquid level float and a heater using the float. One type of detachable liquid level float includes: a connecting rod that passes through a through hole in a mounting cover, with both ends protruding from the upper and lower surfaces of the mounting cover; a sealing flange that is fitted onto the outer wall of the connecting rod and threaded into the through hole; and a float that is fitted onto the outer wall of the connecting rod and located on the lower surface of the mounting cover. Through the threaded design of the sealing flange, the float can be replaced without disassembling the mounting cover. Compared to the traditional method of removing the mounting cover from the heating cylinder before replacing the float, this utility model significantly improves the float replacement efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of heater technology, and particularly relates to a detachable liquid level float and a heater using the float. Background Technology

[0002] In the solar silicon wafer cleaning process, the chemical heater needs to be in frequent contact with corrosive media, and its level detection float is easily damaged.

[0003] Existing technologies, such as patent CN221948367U, disclose a portable heater for heating liquid medicine. This heater places a liquid level float inside the heating cylinder. However, the liquid level float is easily corroded by various liquid medicines and may become damaged. When a damaged float needs to be replaced, the operator must completely remove and open the entire mounting cover from the equipment. This process requires draining the liquid medicine and removing the mounting cover, which is cumbersome, time-consuming, and affects production efficiency.

[0004] Therefore, how to solve the problem of inconvenient float disassembly is a technical issue that urgently needs to be addressed in this field.

[0005] It should be noted that the information disclosed in this background section is only for understanding the background technology of this application concept, and therefore, the above description is not considered to constitute information related to the technology. Utility Model Content

[0006] This disclosure provides at least one detachable liquid level float and a heater using the float.

[0007] In a first aspect, embodiments of this disclosure provide a detachable liquid level float, comprising: The connecting rod passes through the through hole of the mounting cover, and both ends protrude from the upper and lower surfaces of the mounting cover. A sealing flange, which is fitted onto the outer wall of the connecting rod and threaded into the through hole; The float is fitted onto the outer wall of the connecting rod and is located on the lower surface of the mounting cover.

[0008] In one alternative embodiment, an anti-detachment block is fitted at the bottom of the connecting rod to prevent the float from detaching from the connecting rod.

[0009] In one alternative embodiment, the diameter of the through hole is not less than the diameter of the float.

[0010] In one optional embodiment, a connecting electrical signal module is provided on the connecting rod, wherein when the float detects a decrease in liquid level or cannot detect liquid level, the connecting electrical signal sends a detection signal.

[0011] In one alternative embodiment, a cover is fitted over the outer wall of the connecting rod, which covers the outside of the sealing flange.

[0012] Secondly, embodiments of this disclosure also provide a heater, comprising: The heating cylinder has threads on the lower surface of the mounting cover and is hollow inside; A straight pipe, located inside the heating cylinder and connected to the liquid inlet; Heating plates, several of which are evenly distributed axially along the outer wall of the straight tube. Heating wires pass through each of the heating plates and are fixed to the mounting cover by positioning elements.

[0013] In one optional embodiment, the heating wire is at least three parallel long heating wires, each heating wire having an independent temperature measuring device connected to both ends, and including a main temperature measuring point and an auxiliary temperature measuring point.

[0014] In one alternative embodiment, the straight pipe is eccentrically disposed inside the heating cylinder, and its lower end extends to the drain port at the bottom of the heating cylinder.

[0015] In one alternative embodiment, the heating wires are arranged in a spiral shape, and their length direction is parallel to the length direction of the heating cylinder.

[0016] In one alternative embodiment, each of the heating plates has a plurality of heating wire holes; A heating wire passes through each of the said heating wire holes, and several of the said heating wires are arranged circumferentially around the straight tube.

[0017] The beneficial effects of this utility model are that it provides a detachable liquid level float and a heater using the float. Through the threaded design of the sealing flange, the float can be replaced without disassembling the mounting cover. Compared with the traditional method that requires removing the mounting cover from the heating cylinder before the float can be replaced, this utility model significantly improves the replacement efficiency of the float.

[0018] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objectives and other advantages of this invention are realized and obtained through the structures particularly pointed out in the description and the accompanying drawings.

[0019] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, preferred embodiments are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the specific embodiments or related technologies of this utility model, the drawings used in the description of the specific embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0021] Figure 1 A perspective view of a detachable liquid level float provided in an embodiment of this disclosure; Figure 2 A front cross-sectional view of a detachable level float provided in an embodiment of this disclosure; Figure 3 A cross-sectional front view of a heater provided in an embodiment of this disclosure; Figure 4 A perspective view of the heating plate and straight pipe provided in an embodiment of this disclosure; Figure 5 A perspective view of the heating wire provided in an embodiment of this disclosure.

[0022] In the picture: 1. Connecting rod; 10. Anti-detachment block; 11. Connecting electrical signal module; 12. Cover; 2. Sealing flange; 3. Float ball; 4. Mounting cover; 40. Through hole; 5. Heating cylinder; 50. Drain outlet; 51. Liquid inlet; 6. Straight pipe; 7. Heating plate; 70. Heating wire hole; 8. Heating wire; 81. Main temperature measuring point; 82. Auxiliary temperature measuring point; 83. Positioning component. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0024] In this document, when it is mentioned that a first component is located on a second component, this can mean that the first component can be directly formed on the second component, or that a third component can be inserted between the first and second components. Furthermore, in the accompanying drawings, the thickness of the components may be exaggerated or reduced for the purpose of effectively describing the technical content.

[0025] In this document, exemplary embodiments of the present disclosure will be described in more detail with reference to the accompanying drawings. As used herein, expressions such as “at least one of…” modify the entire list of elements when following a list of elements, rather than individual elements in the list. For example, the expression “at least one of a, b, and c” should be understood to include only a, only b, only c, both a and b, both a and c, both b and c, or all of a, b, and c.

[0026] The terminology used herein is for the purpose of describing specific exemplary configurations only and is not intended to be limiting. As used herein, the singular articles “a,” “an,” and “the” may also be intended to include plural forms unless otherwise expressly stated herein. The terms “comprising,” “including,” and “having” are inclusive and thus specify the presence of features, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein should not be construed as requiring them to be performed in the specific order discussed or shown, unless specifically identified as such. Additional or alternative steps may be employed.

[0027] As used herein, the phrases “in one embodiment,” “according to one embodiment,” “in some embodiments,” etc., generally refer to the fact that a particular feature, structure, or characteristic following the phrase can be included in at least one embodiment of this disclosure. Therefore, a particular feature, structure, or characteristic can be included in more than one embodiment of this disclosure, such that these phrases do not necessarily refer to the same embodiment. As used herein, the terms “example,” “exemplary,” etc., are used to “serve as an example, instance, or illustration.” Any implementation, aspect, or design described herein as “example” or “exemplary” is not necessarily to be construed as preferred or superior to other implementations, aspects, or designs. Rather, the use of the terms “example,” “exemplary,” etc., is intended to present concepts in a specific manner.

[0028] Research has revealed that in the solar silicon wafer cleaning process, the chemical heater is frequently exposed to corrosive media, making its level detection float prone to damage.

[0029] Existing technologies, such as patent CN221948367U, disclose a portable heater for heating liquid medicine. This heater places a liquid level float inside the heating cylinder. However, the liquid level float is easily corroded by various liquid medicines and may become damaged. When a damaged float needs to be replaced, the operator must completely remove and open the entire mounting cover from the equipment. This process requires draining the liquid medicine and removing the mounting cover, which is cumbersome, time-consuming, and affects production efficiency.

[0030] Therefore, how to solve the problem of inconvenient float disassembly is a technical issue that urgently needs to be addressed in this field.

[0031] The defects in the above solutions and the reasons for their occurrence are the results of the inventors' practice and careful research. Therefore, the discovery process of the above problems and the solutions proposed in this disclosure should be considered as the inventors' contributions to this disclosure.

[0032] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0033] The following detailed description, with reference to the accompanying drawings, describes some embodiments of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0034] like Figure 1 and Figure 2 As shown, at least one embodiment provides a detachable level float, comprising: A connecting rod 1 passes through the through hole 40 of the mounting cover 4, with both ends protruding from the upper and lower surfaces of the mounting cover 4. The mounting cover 4 is threadedly connected to the upper end of the heating cylinder 5. A sealing flange 2 is sleeved on the outer wall of the connecting rod 1 and threadedly connected to the through hole 40. A float 3 is sleeved on the outer wall of the connecting rod 1 and located on the lower surface of the mounting cover 4; it is used to detect the liquid level in the heating cylinder 5. The float 3 is slidably mounted on the connecting rod 1, and the length of the connecting rod 1 inserted into the heating cylinder 5 can be adjusted according to production needs. When replacing the float 3, the sealing flange 2 is loosened so that the connecting rod 1 and the float 3 are disengaged from the mounting cover 4 through the through hole 40. Due to the threaded design of the sealing flange 2, the float 3 can be replaced without disassembling the mounting cover 4. Compared with the traditional method that requires removing the mounting cover 4 from the heating cylinder 5 before replacing the float 3, this invention significantly improves the replacement efficiency of the float 3.

[0035] Reference Appendix Figure 2 An anti-detachment block 10 is fitted onto the bottom of the connecting rod 1 to prevent the float 3 from detaching from the connecting rod 1. The anti-detachment block 10 prevents the float 3 from detaching from the connecting rod 1. The diameter of the through hole 40 is not less than the diameter of the float 3. A connection electrical signal module 11 is provided on the connecting rod 1, wherein when the float 3 detects a decrease in liquid level or cannot detect the liquid level, the connection electrical signal sends a detection signal. A cover 12 is fitted onto the outer wall of the connecting rod 1, covering the outside of the sealing flange 2 to prevent external contamination or mechanical damage. The cover 12 is made of PTFE material to achieve corrosion resistance and extend the component life.

[0036] The working principle of a detachable level float is as follows: Replacement procedure: After loosening the sealing flange 2, the connecting rod 1 and float 3 can be removed as a whole from the through hole 40. The diameter of the through hole 40 is not less than the diameter of the float 33 to ensure that the float 3 can pass through smoothly. This hole design avoids blockage caused by liquid crystallization and meets the ASME BPE requirements for the cleanliness of fluid equipment.

[0037] Anti-detachment and signal mechanism: An anti-detachment block 10 is fitted at the bottom of the connecting rod 1 to prevent the float 33 from detaching; a connecting electrical signal module 11 is installed on the connecting rod 1. When the float 33 detects a decrease or loss of liquid level, the connecting electrical signal module 11 sends a signal to the heating controller, triggering the heating wire 8 to stop working and preventing dry burning accidents.

[0038] Reference Appendix Figure 3 At least one embodiment provides a heater, comprising: a heating cylinder 5, threaded onto the lower surface of a mounting cover 4, and hollow inside; an inlet 51 and an outlet 51 respectively provided on both sides of the mounting cover 4, the outlet communicating with the through hole 40; a straight pipe 6 located inside the heating cylinder 5 and communicating with the inlet 51; liquid flowing into the straight pipe 6 through the inlet 51, the straight pipe 6 guiding the liquid to the bottom of the heating cylinder 5; heating plates 7, a plurality of heating plates 7 being axially evenly distributed along the outer wall of the straight pipe 6; and heating wires 8 penetrating each heating plate 7 and fixed to the mounting cover 4 by positioning elements 83. The arrangement of multiple heating plates 7 and heating wires 8 can accelerate the heating speed of the liquid inside the heating cylinder 5. The multiple heating plates 7 are axially evenly distributed along the outer wall of the straight pipe 6. The heating wires 8 penetrate the heating plates 7 and are fixed to the mounting cover 4 by positioning elements 83. This structure optimizes heat distribution and is suitable for heating variable-temperature liquids.

[0039] Reference Appendix Figure 5 The heating wire 8 consists of three parallel long heating wires 8, each with an independent temperature measuring device connected to both ends, including a main temperature measuring point 81 and an auxiliary temperature measuring point 82. The heating wire 8 consists of at least three parallel long heating wires 8, each with an independent temperature measuring device connected to both ends, namely a main temperature measuring point 81 and an auxiliary temperature measuring point 82. Figure 5 As shown, the heating wires 8 are arranged in a spiral shape, with their length direction parallel to the length direction of the heating cylinder 5. The parallel design provides redundancy, meaning that in case of failure of the main temperature measuring point 81, the auxiliary point is connected to prevent overheating caused by single-point failure; the spiral layout increases the surface area and improves thermal efficiency.

[0040] Reference Appendix Figure 4 The straight pipe 6 is eccentrically positioned inside the heating cylinder 5, and its lower end extends to the drain port 50 at the bottom of the heating cylinder 5. Each heating plate 7 has several heating wire holes 70. A heating wire 8 passes through each of the heating wire holes 70, and several heating wires 8 are arranged circumferentially around the straight tube 6. Several heating wire holes 70 are formed on each heating plate 7, and the heating wires 8 pass through these holes 70 and through each plate. The heating plates 7 are arranged circumferentially around the straight tube 6 to ensure uniform heating of the liquid medicine. The plate spacing is designed to be 50mm to avoid localized boiling and to meet the cavitation prevention requirements of API 675 for pumped heating systems.

[0041] Reference Appendix Figure 3 and Figure 4 The straight pipe 6 is eccentrically positioned inside the heating cylinder 5, extending to the bottom drain port 50. During operation, residual medicine is discharged by gravity through the eccentric design, reducing the risk of blockage. This layout facilitates integration into the online cleaning system and reduces manual intervention. The positioning component 8383 uses a sealing screw and nut for double sealing to prevent medicine spillage.

[0042] The heater works on the following principle: Start-up phase: The liquid medicine enters through inlet 51 and is distributed to heating cylinder 5 via straight pipe 6. Liquid level float 3 detects the liquid level through connecting rod 1, and signal module monitors the liquid level in real time. Heating stops when the liquid level is below the threshold.

[0043] Maintenance scenario: When float 3 fails due to corrosion, the technician loosens the sealing flange 2 and removes the connecting rod 1-float 3 assembly for replacement.

[0044] Safety advantages: The dual temperature measurement point design, namely the main temperature measurement point 81 and the auxiliary temperature measurement point 82, ensures that the temperature error is <1°C, preventing thermal damage to the silicon wafer.

[0045] In the description of the embodiments of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0046] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and 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, and therefore should not be construed as a limitation of this utility model. Furthermore, terms such as "first," "second," and other numerical terms used herein do not imply order or sequence unless expressly indicated herein. Therefore, without departing from the teachings of the exemplary embodiments, the first element, component, region, layer, or segment discussed above may be referred to as the second element, component, region, layer, or segment.

[0047] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A removable liquid level float, characterized by, include: The connecting rod (1) passes through the through hole (40) of the mounting cover (4) and both ends protrude from the upper and lower surfaces of the mounting cover (4); A sealing flange (2) is fitted onto the outer wall of the connecting rod (1) and threaded into the through hole (40); The float (3) is fitted on the outer wall of the connecting rod (1) and located on the lower surface of the mounting cover (4).

2. The detachable liquid level float as described in claim 1, characterized in that, A detachment block (10) is fitted at the bottom of the connecting rod (1) to limit the float (3) from detaching from the connecting rod (1).

3. The detachable liquid level float as described in claim 1, characterized in that, The diameter of the through hole (40) is not less than the diameter of the float (3).

4. The detachable liquid level float as described in claim 1, characterized in that, A connection electrical signal module (11) is provided on the connecting rod (1), wherein when the float (3) detects a decrease in liquid level or cannot detect liquid level, the connection electrical signal sends a detection signal.

5. The detachable liquid level float as described in claim 1, characterized in that, A cover (12) is fitted on the outer wall of the connecting rod (1), which covers the outside of the sealing flange (2).

6. A heater characterized by, The removable level float as described in any one of claims 1-5 comprises: The heating cylinder (5) has threads on the lower surface of the mounting cover (4) and is hollow inside; A straight pipe (6) is located inside the heating cylinder (5) and is connected to the liquid inlet (51); Heating plates (7), several of the heating plates (7) are evenly distributed axially along the outer wall of the straight tube (6), Heating wire (8) passes through each of the heating plates (7) and is fixed to the mounting cover (4) by positioning element (83).

7. The heater as claimed in claim 6, characterized in that, The heating wire (8) consists of at least three parallel long heating wires (8), each heating wire (8) is connected to an independent temperature measuring device at both ends, and includes a main temperature measuring point (81) and an auxiliary temperature measuring point (82).

8. The heater as claimed in claim 6, characterized in that, The straight pipe (6) is eccentrically positioned inside the heating cylinder (5), and its lower end extends to the drain port (50) at the bottom of the heating cylinder (5).

9. The heater as claimed in claim 6, characterized in that, The heating wire (8) is spirally distributed and its length direction is parallel to the length direction of the heating cylinder (5).

10. The heater as claimed in claim 9, characterized in that, Each of the heating plates (7) has several heating wire holes (70); A heating wire (8) passes through each of the heating wire holes (70), and a plurality of the heating wires (8) are arranged circumferentially around the straight tube (6).

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