High-accuracy liquid level switch
By setting at least three float switches in parallel in the level switch, combined with a guide ring and a limit block, the problem of malfunction of the float-type level switch in the ripple or non-static state is solved, and higher detection accuracy and precision are achieved.
Patent Information
- Application Number
- CN202520262269.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-19
- Publication Date
- 2025-12-19
- Estimated Expiration
- 2035-02-19
AI Technical Summary
Existing float-type level switches are prone to malfunction when there are ripples on the liquid surface or when the liquid is not stationary, resulting in low detection accuracy.
At least three float switches are evenly distributed and connected in series, and fixed to the bracket by a connecting frame to ensure that the main switch body is triggered only after all float switches are triggered. Combined with guide rings and limit blocks, the sliding accuracy of the slide bar is improved and malfunctions are prevented.
When the liquid surface is tilted or not stationary, the float switch is less prone to malfunction, thus improving the detection accuracy and precision of the level switch.
Smart Images
Figure CN223693046U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to liquid level switch technical field especially relates to a liquid level switch with high accuracy rate. BACKGROUND
[0002] Liquid level switch, also called water level switch, liquid level sensor, as the name implies, is a switch used to control liquid level, which is mainly divided into contact type and non-contact type in form, and the commonly used non-contact switch includes capacitive liquid level switch, contact type floating ball type liquid level switch, electrode type liquid level switch and electronic liquid level switch. Capacitive liquid level switch can also be realized by contact method. With the continuous development and progress of science and technology, the control of liquid level switch is gradually intelligentized and high-precision.
[0003] Although the floating ball type liquid level switch in the prior art can meet the liquid detection requirement, when there is corrugation on the liquid surface or the liquid surface is in a non-stationary state, the floating ball type liquid level switch may malfunction.
[0004] Therefore, the floating ball type liquid level switch in the prior art has the technical problem of easy malfunction. SUMMARY
[0005] The liquid level switch with high accuracy rate provided by the utility model solves the technical problem of easy malfunction of the floating ball type liquid level switch in the prior art.
[0006] Some embodiments for solving the above technical problem include:
[0007] A liquid level switch with high accuracy rate comprises a support, the support is provided with a switch body, the support is horizontally arranged, the support is further provided with a float switch, the float switch is at least three, the at least three float switches are uniformly distributed around the support, and the switch body is triggered by the float switch.
[0008] The float switch comprises a vertically arranged cylinder, the upper end of the cylinder is provided with a switch assembly, the lower end of the cylinder is provided with a float assembly, the switch assembly is triggered by the float assembly, the float assembly is slidingly connected to the cylinder, all the switch assemblies are arranged in series, and the switch body is triggered after all the switch assemblies are triggered.
[0009] The cylinder is fixed to the support through a connecting frame.
[0010] Preferably, the switch assembly comprises a body and a contact arranged on the body, the body is fixed to the cylinder through threads, and the contact is located at the lower end of the body.
[0011] As preferred, the body is provided with external threads, the barrel is provided with internal threads matched with the external threads of the body, the barrel is further provided with a lock ring, the lock ring is sleeved on the body, and the lock ring is provided with external threads matched with the internal threads of the barrel.
[0012] As preferred, the float assembly is slidably connected to the barrel through a slide rod, the upper end of the slide rod is located in the barrel, the upper end of the slide rod is provided with a limiting block for preventing the slide rod from being separated from the barrel, and the barrel is provided with a guide ring matched with the slide rod.
[0013] As preferred, the guide ring is at least two, the at least two guide rings are uniformly arranged along the length direction of the barrel, and all the guide rings are located below the limiting block.
[0014] As preferred, the surface of the guide ring in contact with the slide rod is an arc surface for realizing linear contact between the guide ring and the slide rod.
[0015] As preferred, the guide ring and the barrel are in an integrated structure, and the barrel is provided with a lightening groove for reducing the weight of the barrel.
[0016] As preferred, the limiting block is fixed to the slide rod through threads, or the limiting block and the slide rod are in an integrated structure.
[0017] As preferred, the connecting frame comprises an inner rod fixed to the barrel, the support is provided with an outer rod matched with the inner rod, the inner rod is provided with external threads, and the outer rod is provided with screw holes matched with the external threads of the inner rod.
[0018] As preferred, the outer rod and the support are in an integrated structure, the inner rod and the barrel are in an integrated structure, the inner rod is perpendicular to the barrel, the inner rod is further provided with a lock nut, and the support is provided with a level.
[0019] Compared with the prior art, the utility model has the following advantages:
[0020] By arranging at least three float switches and connecting the at least three float switches in series, the switch body can be triggered only after all the float switches are triggered, so that when the liquid surface is in an inclined state or the liquid surface is in a non-stationary state, the switch body will not be triggered even if part of the float switches are triggered, thereby preventing the switch body from being easily misoperated and improving the precision of the liquid level switch.
[0021] By setting the connecting frame, the connecting frame can fix the float switch at a position away from the support, so that the float switch has a larger distribution area on the liquid surface, and the float switch can detect the liquid surface at multiple positions, so that the float switch is not easy to act, and the precision of the liquid level switch is further improved.
[0022] Three points form a plane, and at least three float switches are used to effectively detect the actual position of the liquid surface, so that the float switch has higher action precision, and the switch body is not easy to misoperate. BRIEF DESCRIPTION OF DRAWINGS
[0023] For the purpose of explanation, several embodiments of the present utility model technology are set forth in the following drawings. The following drawings are incorporated into the present text and constitute a part of the specific embodiments. In some cases, the well-known structures and components are shown in block diagram form in order to avoid obscuring the concepts of the present utility model subject technology.
[0024] Fig. 1 It is a schematic view of the present utility model.
[0025] Fig. 2 It is a schematic view of the support.
[0026] Fig. 3 It is a schematic view of the float switch.
[0027] Fig. 4 It is an exploded view of the float switch.
[0028] Fig. 5 It is a schematic view of the internal structure of the float switch.
[0029] Shown in the figure:
[0030] 1, support, 11, switch body.
[0031] 2, float switch, 21, cylinder, 211, guide ring, 212, weight-reducing groove, 22, switch assembly, 221, body, 222, contact, 23, float assembly, 231, sliding rod, 232, limit block.
[0032] 3, connecting frame, 31, inner rod, 32, outer rod. DETAILED DESCRIPTION
[0033] The detailed embodiments shown below are intended to be illustrative of the various configurations of the subject technology and are not intended to represent the only configurations in which the subject technology can be practiced. The detailed embodiments include specific details for the purpose of providing a thorough understanding of the subject technology. However, it will be apparent to those skilled in the art that the subject technology can be practiced without
[0034] It can be understood that, in this document, the terms such as "first" and "second" are intended to distinguish one entity or operation from another entity or operation, rather than to "imply or indicate any actual relationship or sequence between the entities or operations.
[0035] The terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element preceded by "comprises a" does not, without more constraints, foreclose the existence of additional identical elements in the process, method, article, or apparatus that includes the recited element.
[0036] Referring to Figs. 1 to 5 As shown in the figure, a liquid level switch with high accuracy, comprising a support 1, the support 1 is provided with a switch body 11, the support 1 is horizontally arranged, the support 1 is further provided with a float switch 2, the float switch 2 is at least three, at least three float switches 2 are uniformly distributed around the support 1, the switch body 11 is triggered by the float switch 2;
[0037] The float switch 2 comprises a vertically arranged cylinder 21, the upper end of the cylinder 21 is provided with a switch assembly 22, the lower end of the cylinder 21 is provided with a float assembly 23, the switch assembly 22 is triggered by the float assembly 23, the float assembly 23 is slidingly connected to the cylinder 21, all the switch assemblies 22 are arranged in series, and the switch body 11 is triggered after all the switch assemblies 22 are triggered;
[0038] The cylinder 21 is fixed to the support 1 through a connecting frame 3.
[0039] The switch body 11 can be any non-mechanical switch. Specifically, all the float switches 2 are connected in series and electrically connected to the switch body 11. When all the float switches 2 are triggered, the main switch is closed. When one or more of the float switches 2 are not triggered, the switch body 11 cannot be triggered.
[0040] Since the plurality of float switches 2 are arranged in series, the plurality of float switches 2 can detect multiple positions of the liquid surface, and when the liquid surface is in a non-stationary state or is tilted, one or more of the plurality of float switches 2 cannot be triggered, so that the switch body 11 cannot be triggered. That is, the switch body 11 can be triggered only when all the float switches 2 are triggered, thereby improving the accuracy of the switch body 11 and reducing the risk of false operation of the switch body 11.
[0041] The bracket 1 can be installed at the target position by any means.
[0042] Referring to Figs. 1 to 5 In some embodiments, as shown in the drawings, the switch assembly 22 includes a body 221 and a contact 222 arranged on the body 221, the body 221 is fixed to the cylinder 21 by threads, and the contact 222 is located at the lower end of the body 221. The contact 222 is triggered by a slide rod 231.
[0043] The body 221 is provided with external threads, the cylinder 21 is provided with internal threads matched with the external threads of the body 221, and the cylinder 21 is further provided with a lock ring, the lock ring is sleeved on the body 221, and the lock ring is provided with external threads matched with the internal threads of the cylinder 21.
[0044] In some embodiments, the float assembly 23 is connected to the cylinder 21 by a slide rod 231, the upper end of the slide rod 231 is located in the cylinder 21, and the upper end of the slide rod 231 is provided with a limiting block 232 to prevent the slide rod 231 from being separated from the cylinder 21, and the cylinder 21 is provided with a guide ring 211 matched with the slide rod 231.
[0045] The guide ring 211 has at least two, and the at least two guide rings are uniformly arranged along the length direction of the cylinder 21, and all the guide rings 211 are located below the limiting block 232.
[0046] The surface of the guide ring 211 in contact with the slide rod 231 is an arc surface to make the guide ring 211 and the slide rod 231 in linear contact. The arrangement of the guide ring 211 makes the slide rod 231 have higher displacement accuracy, and the slide rod 231 is not easy to be stuck during sliding, thereby effectively avoiding that the float switch 2 cannot be triggered. Since the slide rod 231 is not easy to be stuck, the float switch 2 has higher accuracy.
[0047] Referring to Figs. 1 to 5 In some embodiments, the guide ring 211 and the cylinder 21 are in an integral structure, and the cylinder 21 is provided with a lightening groove 212 to reduce the weight of the cylinder 21.
[0048] The weight-reducing grooves 212 can be one or more, for reducing the weight of the cylinder 21, so that the liquid level switch as a whole has a lighter weight.
[0049] In some embodiments, the limiting block 232 is fixed to the slide rod 231 by screwing, or the limiting block 232 and the slide rod 231 are of an integral structure.
[0050] The float ball in the float assembly 23 can be fixed to the slide rod 231 in any manner. For example, the float ball can be fixed to the slide rod 231 by detachable connection, or the float ball can be fixed to the slide rod 231 by non-detachable connection.
[0051] In some embodiments, the connecting frame 3 comprises an inner rod 31 fixed to the cylinder 21, the support 1 is provided with an outer rod 32 matched with the inner rod 31, the inner rod 31 is provided with external threads, and the outer rod 32 is provided with screw holes matched with the external threads of the inner rod 31.
[0052] In some embodiments, the outer rod 32 and the support 1 are of an integral structure, the inner rod 31 and the cylinder 21 are of an integral structure, the inner rod 31 is perpendicular to the cylinder 21, and the inner rod 31 is further provided with a lock nut.
[0053] In some embodiments, the support 1 is provided with a level. The level makes it convenient to indicate whether the support 1 is in a horizontal state during installation, so that the liquid level switch has higher accuracy when the support 1 is in the horizontal state.
[0054] The level can be fixed to the support 1 in any manner, for example, by screwing.
[0055] The above has introduced the subject technical scheme of the utility model and corresponding details. It can be understood that the above introduction is only some implementation of the subject technical scheme of the utility model, and some details can be omitted during specific implementation.
[0056] In addition, in some implementation of the utility model above, multiple implementations can be combined, and various combination schemes are not listed one by one due to the length. Those skilled in the art can freely combine the above implementation according to the needs during specific implementation, so as to obtain better application experience.
[0057] Those skilled in the art can obtain other details or drawings according to the subject technical scheme of the utility model and the drawings during implementation of the subject technical scheme of the utility model. Obviously, these details still belong to the range covered by the subject technical scheme of the utility model without departing from the subject technical scheme of the utility model.
Claims
1. A liquid level switch with high accuracy, characterized by: The utility model provides a kind of float switch, including support (1), the support (1) is provided with switch body (11), the support (1) is horizontally arranged, the support (1) is further provided with float switch (2), the float switch (2) at least three, at least three the float switch (2) evenly distributed in the periphery of the support (1), the switch body (11) is triggered by the float switch (2); The float switch (2) includes a vertically arranged cylinder (21), the upper end of the cylinder (21) is provided with a switch assembly (22), the lower end of the cylinder (21) is provided with a float assembly (23), the switch assembly (22) is triggered by the float assembly (23), the float assembly (23) is slidingly connected to the cylinder (21), all the switch assemblies (22) are arranged in series, and the switch body (11) is triggered after all the switch assemblies (22) are triggered. The cylinder (21) is fixed to the support (1) by a connecting frame (3).
2. The liquid level switch with high accuracy according to claim 1, characterized in that: The switch assembly (22) includes a body (221) and a contact (222) provided on the body (221), the body (221) is fixed to the cylinder (21) by threads, and the contact (222) is located at the lower end of the body (221).
3. The liquid level switch with high accuracy according to claim 2, characterized in that: The body (221) is provided with external threads, the cylinder (21) is provided with internal threads matched with the external threads of the body (221), the cylinder (21) is further provided with a lock ring, the lock ring is sleeved on the body (221), and the lock ring is provided with external threads matched with the internal threads of the cylinder (21).
4. The liquid level switch of high accuracy according to claim 3, characterized in that: The float assembly (23) is slidingly connected to the cylinder (21) by a slide rod (231), the upper end of the slide rod (231) is located in the cylinder (21), the upper end of the slide rod (231) is provided with a limiting block (232) preventing the slide rod (231) from being separated from the cylinder (21), and the cylinder (21) is provided with a guide ring (211) matched with the slide rod (231).
5. The liquid level switch of high accuracy according to claim 4, characterized in that: The guide ring (211) is provided in the length direction of the cylinder (21), and all the guide rings (211) are located below the limiting block (232).
6. The liquid level switch with high accuracy according to claim 5, characterized in that: The surface of the guide ring (211) in contact with the slide rod (231) is an arc surface for linear contact between the guide ring (211) and the slide rod (231).
7. The liquid level switch of high accuracy according to claim 6, characterized in that: The guide ring (211) and the cylinder (21) are in an integral structure, and the cylinder (21) is provided with a lightening groove (212) reducing the weight of the cylinder (21).
8. The liquid level switch of high accuracy according to claim 7, characterized by: The limiting block (232) is fixed to the slide rod (231) by threads, or the limiting block (232) and the slide rod (231) are in an integral structure.
9. The liquid level switch of high accuracy according to claim 1, characterized by: The connecting frame (3) comprises an inner rod (31) fixed to the barrel (21), and the support (1) is provided with an outer rod (32) matched with the inner rod (31), wherein the inner rod (31) is provided with an outer thread, and the outer rod (32) is provided with a screw hole matched with the outer thread of the inner rod (31).
10. The liquid level switch of high accuracy according to claim 9, characterized by: The outer rod (32) and the support (1) are in an integral structure, the inner rod (31) and the barrel (21) are in an integral structure, the inner rod (31) is perpendicular to the barrel (21), the inner rod (31) is further provided with a lock nut, and the support (1) is provided with a level.