Verification device of liquid level switch

Abstract

The utility model provides a liquid level switch checking device, which relates to the technical field of liquid level switch checking devices and comprises a closed structure, a checking structure is mounted on the right side of the closed structure, a branch pipe is sleeved at the top end of the closed structure, a liquid level switch is mounted at the top end of the branch pipe, and the closed structure comprises a three-way pipeline. Threaded rods are symmetrically arranged at the positions, close to the left side and the right side, of the top end of the three-way pipeline, the threaded rods extend into the three-way pipeline and are provided with circular sealing plates, and rotating shafts are arranged at the bottoms of the circular sealing plates and located in the three-way pipeline. Limiting blocks are arranged in the three-way pipeline and located at the positions, close to the front face and the back face, of the left side and the right side of the circular sealing plate in a staggered mode, the verification structure comprises a box body, and through use of a threaded rod, the circular sealing plate and the box body, the three-way pipeline can be closed before the liquid level switch is verified, so that water flow is prevented from being sprayed out; the installation difficulty of the verification tube is greatly reduced, and the overall practicability is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of liquid level switch calibration devices, in particular to a liquid level switch calibration device. Background Art

[0002] Liquid level switch, also known as water level switch, liquid level sensor, as the name implies, is a switch used to control the liquid level. It is mainly divided into contact type and non-contact type in form. Commonly used non-contact switches include capacitive liquid level switch, contact float type liquid level switch is the most widely used, electrode liquid level switch, electronic liquid level switch, capacitive liquid level switch can also be realized by contact method;

[0003] The existing Chinese patent with the announcement number CN 210802871 U discloses a calibration device for a liquid level switch, in which the sleeve is initially fixedly installed at one end of a three-way valve. When the liquid level switch needs to be calibrated, the three-way valve and the calibration pipe need to be sealed and connected together through two connectors, and the knob is turned clockwise to move the two slide bars to Figure 3 The position shown in the figure ensures the stability of the two connectors, and water is added into the water inlet funnel. The liquid level switch is tested through the communicating vessel principle. When the liquid level switch reaches the upper limit, the single chip receives the signal of the liquid level switch and makes the buzzer sound. The above water adding operation is repeated to achieve the purpose of testing the liquid level switch. Compared with the traditional testing device, the testing tube can be disassembled from the sleeve, which is convenient to use, reduces the production cost, and greatly extends the application scope of the testing tube.

[0004] The above-mentioned existing technical solutions have the following defects: the sleeve only has the function of reinforcing the connection between the three-way valve and the calibration tube, and cannot close the three channels. During the installation or disassembly of the calibration tube, water will gush out through the three-way valve, thereby increasing the difficulty of installation and insufficient practicality. Therefore, we propose a calibration device for a liquid level switch. Utility Model Content

[0005] The purpose of the utility model is to solve the shortcomings existing in the prior art. The sleeve only has the function of reinforcing the connection between the three-way valve and the calibration tube, and cannot close the three channels. During the installation or disassembly of the calibration tube, water will gush outward through the three-way valve, thereby increasing the difficulty of installation and insufficient practicality. Therefore, we propose a calibration device for a liquid level switch.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A liquid level switch calibration device comprises a closed structure, a calibration structure is installed on the right side of the closed structure, a branch pipe is sleeved on the top of the closed structure, and a liquid level switch is installed on the top of the branch pipe;

[0008] The closed structure comprises a three-way pipe, a threaded rod is symmetrically arranged at the top of the three-way pipe near the left and right sides, a circular sealing plate is arranged inside the three-way pipe after the threaded rod extends to the inside, a rotating shaft is arranged at the bottom of the circular sealing plate and located inside the three-way pipe, and limited blocks are staggeredly arranged inside the three-way pipe and located on the left and right sides of the circular sealing plate near the front and back sides;

[0009] The verification structure comprises a box body, a water outlet is provided on the left side of the box body near the bottom, a water inlet is provided on the top of the box body, a verification tube is sleeved on the top of the water inlet, and a funnel is provided on the top of the verification tube.

[0010] As a preferred solution of the utility model, the threaded rod is compatible with the three-way pipe, and the circular sealing plate is fixedly connected to the threaded rod.

[0011] The technical effect of adopting the above further solution is: by rotating the threaded rod, the circular sealing plate can be driven to rotate inside the three-way pipe, thereby closing the three-way pipe and preventing water from overflowing.

[0012] As a preferred solution of the utility model, the circular sealing plate is adapted to the three-way pipe, and the circular sealing plate is rotatably connected to the rotating shaft.

[0013] The technical effect of adopting the above further scheme is: the circular sealing plate can better seal the three-way pipe through the adaptation with the three-way pipe, and the circular sealing plate can rotate more smoothly through the rotating shaft, thereby improving the stability of use.

[0014] As a preferred solution of the utility model, the rotating shaft is fixedly connected to the three-way pipe, and the limiting block is fixedly connected to the three-way pipe.

[0015] The technical effect of adopting the above further solution is: through the fixed connection between the limit block and the three-way pipe, the circular sealing plate can be limited to prevent it from excessive rotation, thereby improving the sealing effect and the stability of use.

[0016] As a preferred solution of the utility model, the calibration tube is threadedly connected to the water inlet, and the funnel is adapted to the calibration tube.

[0017] The technical effect of adopting the above further scheme is: through the threaded connection between the calibration tube and the water inlet, the calibration tube can be quickly disassembled and assembled, which greatly improves the convenience of use, and the external calibration water can be injected into the box body through the funnel.

[0018] As a preferred solution of the utility model, the branch pipe is connected to the three-way pipe, and the liquid level switch is fixedly connected to the branch pipe.

[0019] The technical effect of adopting the above further solution is: through the connection between the branch pipe and the three-way pipe, water can flow into it during calibration, thereby realizing the calibration of the liquid level switch.

[0020] As a preferred solution of the utility model, the three-way pipe, the box body, the water outlet, the water inlet, the calibration tube and the funnel are connected.

[0021] The technical effect of adopting the above further scheme is: the external calibration water is injected into the calibration tube through the funnel, flows into the box body through the water inlet, then enters the three-way pipe through the water outlet, and finally enters the branch pipe through the principle of the communicating vessel to complete the calibration of the liquid level switch.

[0022] Compared with the prior art, the beneficial effects of the utility model are:

[0023] In the utility model, through the design of the closing structure, the verification structure, the branch pipe and the liquid level switch, and through the use of the threaded rod, the circular sealing plate and the box body, the three-way pipe can be closed before the liquid level switch is verified, thereby preventing water from spraying out, greatly reducing the difficulty of installing the verification pipe and effectively improving the overall practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the overall structure of a calibration device for a liquid level switch provided by the utility model;

[0025] Figure 2 This is an overall front structural anatomical diagram of a liquid level switch calibration device provided by the utility model;

[0026] Figure 3 A structural anatomical diagram of the top end of a circular sealing plate of a liquid level switch calibration device provided by the utility model;

[0027] Figure 4 The utility model provides a tee-tube side structural anatomical diagram of a liquid level switch calibration device.

[0028] Legend: 1. Enclosed structure; 101. Three-way pipe; 102. Threaded rod; 103. Round sealing plate; 104. Rotating shaft; 105. Limit block; 2. Verification structure; 201. Box body; 202. Water outlet; 203. Water inlet; 204. Verification tube; 205. Funnel; 3. Branch pipe; 4. Liquid level switch. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0030] In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant literature, and several embodiments of the present invention are given. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0031] It should be noted that when an element is referred to as being "fixed on" another element, it may be directly on the other element or there may also be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used in this article are for illustrative purposes only.

[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field of the present invention. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used in this article includes any and all combinations of one or more related listed items.

[0033] Example 1

[0034] like Figure 1-4As shown, the utility model provides a technical solution: a calibration device for a liquid level switch, comprising a closed structure 1, a calibration structure 2 is installed on the right side of the closed structure 1, a branch pipe 3 is sleeved on the top of the closed structure 1, a rubber pad is arranged at the connection between the branch pipe 3 and the three-way pipe 101, which can improve the sealing effect, a liquid level switch 4 is installed on the top of the branch pipe 3, the closed structure 1 comprises a three-way pipe 101, one end of the three-way pipe 101 away from the box body 201 is connected to an external water storage device, a threaded rod 102 is symmetrically arranged near the left and right sides of the top of the three-way pipe 101, the threaded rod 102 extends to the inside of the three-way pipe 101 and a circular sealing plate 103 is arranged, and the bottom of the circular sealing plate 103 is located on the three-way pipe 101 A rotating shaft 104 is arranged inside the three-way pipe 101, and limit blocks 105 are staggeredly arranged inside the three-way pipe 101 and on the left and right sides of the circular sealing plate 103 near the front and back sides. The verification structure 2 comprises a box body 201, and a water outlet 202 is provided on the left side of the box body 201 near the bottom, and a rubber pad is provided at the connection between the water outlet 202 and the three-way pipe 101 to improve the sealing effect. A water inlet 203 is provided at the top of the box body 201, and a rubber pad is provided at the connection between the water inlet 203 and the verification tube 204 to improve the sealing effect. A verification tube 204 is sleeved on the top of the water inlet 203, and an observation window is provided on the front of the verification tube 204 to facilitate observation of the water level, and a funnel 205 is provided on the top of the verification tube 204.

[0035] Example 2

[0036] like Figure 1-4As shown, the threaded rod 102 is adapted to the three-way pipe 101, and the circular sealing plate 103 is fixedly connected to the threaded rod 102. By rotating the threaded rod 102, the circular sealing plate 103 can be driven to rotate inside the three-way pipe 101, so as to close or open the three-way pipe 101 to prevent water from overflowing. The circular sealing plate 103 is adapted to the three-way pipe 101, and the circular sealing plate 103 is rotatably connected to the rotating shaft 104. The three-way pipe 101 can be better sealed by the shaft 104, and the circular sealing plate 103 can rotate more smoothly through the rotating shaft 104, thereby improving the stability of use. The rotating shaft 104 is fixedly connected to the three-way pipe 101, and the limit block 105 is fixedly connected to the three-way pipe 101. The fixed connection between the limit block 105 and the three-way pipe 101 can limit the circular sealing plate 103 to prevent it from rotating excessively, thereby improving the sealing effect and the stability of use. The calibration tube 204 is threadedly connected to the water inlet 203, and the funnel 205 is adapted to the calibration tube 204. Through the threaded connection between the calibration tube 204 and the water inlet 203, the calibration tube 204 can be quickly disassembled and assembled, which greatly improves the convenience of use. External calibration water can be injected into the box body 201 through the funnel 205. The branch pipe 3 is connected to the three-way pipe 101, and the liquid level switch 4 is fixedly connected to the branch pipe 3. Through the connection between the branch pipe 3 and the three-way pipe 101, water can flow into it during calibration. In order to realize the calibration of the liquid level switch 4, the three-way pipe 101, the box body 201, the water outlet 202, the water inlet 203, the calibration tube 204 and the funnel 205 are connected, and the external calibration water is injected into the calibration tube 204 through the funnel 205, flows into the box body 201 through the water inlet 203, and then enters the three-way pipe 101 through the water outlet 202. Finally, the water flows into the branch pipe 3 through the principle of the communicating vessel, thereby completing the calibration of the liquid level switch 4.

[0037] The working process of the utility model is as follows: when installing and using the calibration tube of a calibration device for a liquid level switch, first rotate the threaded rod 102 on the left side of the three-way pipe 101 counterclockwise to drive the circular sealing plate 103 to rotate inside the three-way pipe 101 until the circular sealing plate 103 fits with the limit block 105, completing the sealing work on the left side of the three-way pipe 101, rotate the threaded rod 102 on the right side of the three-way pipe 101 clockwise to drive the circular sealing plate 103 to rotate ninety degrees inside the three-way pipe 101, so that the three-way pipe 101 is connected with the box body 201, and finally insert the bottom of the funnel 205 into one end of the calibration tube 204, and connect the other end of the calibration tube 204 to the water inlet 203 through the thread to complete the entire installation process. , effectively closing the passage between the three-way pipe 101 and the external water storage device, thereby preventing water from spraying out when installing the calibration tube 204, greatly reducing the difficulty of installing the calibration tube 204, and effectively improving the overall practicality. During calibration, the external water flow is injected into the calibration tube 204 through the funnel 205, and the water flows through the water inlet 203 into the box body 201, and then enters the three-way pipe 101 through the water outlet 202. Finally, the water flows into the branch pipe 3 through the communicating vessel principle, and the calibration of the liquid level switch 4 can be started. When the water level reaches the threshold of the liquid level switch 4, the single-chip device receives the signal of the liquid level switch 4, thereby controlling the buzzer to sound. After repeating this operation, the purpose of calibrating the liquid level switch 4 is achieved.

[0038] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A liquid level switch calibration device, comprising a closed structure (1), characterized in that: A verification structure (2) is installed on the right side of the closed structure (1), a branch pipe (3) is sleeved on the top of the closed structure (1), and a liquid level switch (4) is installed on the top of the branch pipe (3); The closed structure (1) comprises a three-way pipe (101), a threaded rod (102) is symmetrically arranged at the top of the three-way pipe (101) near the left and right sides, a circular sealing plate (103) is arranged inside the three-way pipe (101) where the threaded rod (102) extends, a rotating shaft (104) is arranged at the bottom of the circular sealing plate (103) and located inside the three-way pipe (101), and limiting blocks (105) are staggeredly arranged inside the three-way pipe (101) and located near the front and back sides of the circular sealing plate (103); The verification structure (2) comprises a box body (201), a water outlet (202) is provided on the left side of the box body (201) near the bottom, a water inlet (203) is provided at the top of the box body (201), a verification tube (204) is sleeved at the top of the water inlet (203), and a funnel (205) is provided at the top of the verification tube (204).

2. A liquid level switch calibration device according to claim 1, characterized in that: The threaded rod (102) is compatible with the three-way pipe (101), and the circular sealing plate (103) is fixedly connected to the threaded rod (102).

3. A liquid level switch calibration device according to claim 1, characterized in that: The circular sealing plate (103) is adapted to the three-way pipe (101), and the circular sealing plate (103) is rotatably connected to the rotating shaft (104).

4. A liquid level switch calibration device according to claim 1, characterized in that: The rotating shaft (104) is fixedly connected to the three-way pipe (101), and the limiting block (105) is fixedly connected to the three-way pipe (101).

5. The liquid level switch calibration device according to claim 1, characterized in that: The calibration tube (204) is threadedly connected to the water inlet (203), and the funnel (205) is adapted to the calibration tube (204).

6. A liquid level switch calibration device according to claim 1, characterized in that: The branch pipe (3) is connected to the three-way pipe (101), and the liquid level switch (4) is fixedly connected to the branch pipe (3).

7. A liquid level switch calibration device according to claim 1, characterized in that: The three-way pipe (101), the box body (201), the water outlet (202), the water inlet (203), the calibration pipe (204) and the funnel (205) are connected.

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