Pressure switch protection device
By designing a pressure switch protection device for the protective cover and fixing mechanism, the problem of pressure switches being easily damaged in complex environments in the prior art is solved, and simple and effective protection and normal operation in low-temperature environments are achieved.
Patent Information
- Application Number
- CN202420731496.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-10
- Publication Date
- 2024-12-27
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
Existing pressure switches are susceptible to external influences in complex working environments, resulting in damage or failure, and there are problems such as complex protection measures, high cost and poor results.
A pressure switch protection device including a protective cover and a fixing mechanism is designed, using a removable transparent cover and an embedded electric heating wire, which can achieve waterproof, dustproof and anti-smash protection through magnetic pole attractive force and threaded connection, and is also passed through an electric heating wire. Ensure normal operation in low temperature environments.
It realizes a simple and compact protective device, which is convenient for installation and maintenance, ensures that the pressure switch operates stably in complex environments and works normally in low temperature environments, avoiding seal failure and sensor tube deformation.
Smart Images
Figure CN222260895U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of pressure switches, in particular to a pressure switch protection device. Background Art
[0002] Pressure switches are generally installed vertically on pipelines to detect pressure changes inside pipelines. However, due to the complex and changeable working environment, pressure switches are often easily affected by the external environment, such as dust, moisture, external force collision, etc., which may cause the switch to be damaged or even fail, posing a safety hazard to production.
[0003] At present, there are some protective measures for pressure switches on the market, but most of them are complex in structure, high in cost, and the protective effect is not satisfactory. Therefore, providing a pressure switch protective device with a simple structure and comprehensive protective effect is of great significance for improving the operating stability and safety of industrial automation equipment. Utility Model Content
[0004] The purpose of the utility model is to overcome the shortcomings of the prior art and provide a pressure switch protection device.
[0005] In order to solve the above technical problems, the solution adopted by the utility model is:
[0006] A pressure switch protection device includes a connected protective cover and a fixing mechanism, wherein the protective cover includes a cover seat, a detachable transparent cover shell is arranged on the cover seat, the cover seat is provided with wiring terminals penetrating the inner and outer walls, a heating wire is embedded inside the cover seat, and the cover seat and the transparent cover shell are each connected to a magnetic pole and the two magnetic poles attract each other.
[0007] Furthermore, the fixing mechanism includes two separate "C"-shaped clamps, one of which is fixed to the cover seat, and the two "C"-shaped clamps are connected by bolts or buckles.
[0008] Furthermore, the connection terminal is located on the inner wall and the outer wall of the cover base and is provided with two connection posts, and the connection posts are connected one by one between the inner and outer walls of the cover base.
[0009] Furthermore, the upper portion of the cover seat is provided with an external thread, the lower portion of the transparent cover shell is provided with an internal thread matching the external thread, the cover seat is penetrated from top to bottom, and the upper portion of the transparent cover shell is closed and the lower portion is open.
[0010] Furthermore, the heating wire and the magnetic pole are both arranged away from the wiring terminal, and the heating wire is in a spirally wound shape.
[0011] Furthermore, a circular ring-shaped gasket is arranged between the cover seat and the transparent cover shell.
[0012] Furthermore, after the cover base and the transparent cover shell are screwed into place, the suction force of the two magnetic poles is at least 75% of the maximum suction force between the two poles.
[0013] Furthermore, a circular groove is arranged on the lower surface of the cover seat, and a gasket is arranged in the circular groove.
[0014] Compared with the prior art, the beneficial effects of the utility model are:
[0015] The utility model has a simple and compact structure, is easy to install and disassemble, and is convenient for maintaining and replacing the pressure switch. The transparent cover makes the internal pressure switch status visible in real time; the pressure switch is connected to the wiring terminals in the cover seat, and the wiring terminals outside the cover seat are connected to the external circuit, so that the pressure switch is completely isolated from the outside world; at the same time, it also ensures that the pressure switch can work normally in a low temperature environment. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.
[0017] Figure 2 for Figure 1 The enlarged schematic diagram of point A in the middle,
[0018] Figure 3 for Figure 1 The enlarged schematic diagram of point B in the middle,
[0019] Figure 4 It is a cross-sectional structural schematic diagram of the utility model.
[0020] Figure 5 for Figure 4 The enlarged schematic diagram at C in the middle,
[0021] Figure 6 This is a three-dimensional structural schematic diagram of the utility model from another angle.
[0022] Figure 7 It is a schematic diagram of the structure of the heating wire in the utility model.
[0023] In the figure: 1, protective cover; 1a, cover seat; 1a-1, wiring terminal; 1a-2, heating wire; 1a-3, gasket; 1b, transparent cover; 1c, magnetic pole; 1d, gasket; 2, fixing mechanism; 2a, clamp. DETAILED DESCRIPTION
[0024] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.
[0025] like Figure 1-Figure 7As shown, the pressure switch protection device includes a connected protection cover 1 and a fixing mechanism 2, the fixing mechanism 2 is used to be connected to the outer wall of the pipe where the pressure switch is installed, and the protection cover 1 is used to cover the periphery of the pressure switch to form a comprehensive waterproof, dustproof and anti-smashing protection.
[0026] The protective cover 1 comprises a cover seat 1a, on which a detachable transparent cover shell 1b is arranged, which is convenient for opening to maintain and replace the internal pressure switch. The transparent cover shell 1b makes the status of the internal pressure switch visible in real time.
[0027] The cover seat 1a is provided with a terminal 1a-1 that penetrates the inner and outer walls. The terminal 1a-1 is located on the inner and outer walls of the cover seat 1a. Two terminals are provided. The terminals are connected one by one between the inner and outer walls of the cover seat 1a. That is, two electrical paths that penetrate the inner and outer walls are formed. When the pressure switch is wired during installation, the pressure switch is connected to the terminal 1a-1 inside the cover seat 1a, and the terminal 1a-1 outside the cover seat 1a is connected to the external circuit, so that the pressure switch is completely isolated from the outside.
[0028] In a severely cold working environment, some pressure switches may malfunction, for example: deformation of the sensing tube: the sensing tube of the pressure switch is usually made of metal. As the temperature decreases, the metal may shrink, causing the sensing tube to deform. This deformation may affect the positioning of the sensing tube, and thus affect the accuracy and sensitivity of the pressure switch; seal failure: in a low-temperature environment, the rubber seal may harden and crack, causing seal failure, which may cause medium leakage. Therefore, a spirally wound electric heating wire 1a-2 is embedded inside the cover seat 1a, which can be heated by powering on to ensure that the pressure switch can work normally in a low-temperature environment.
[0029] The fixing mechanism 2 includes two separate "C"-shaped clamps 2a, one of which is fixed to the cover seat 1a, and the two "C"-shaped clamps 2a are connected by bolts or buckles to clamp the pipe on which the pressure switch is installed.
[0030] Specifically, an external thread is provided on the upper portion of the cover seat 1a, and an internal thread matching the external thread is provided on the lower portion of the transparent cover shell 1b. The cover seat 1a is penetrated from top to bottom, the upper portion of the transparent cover shell 1b is closed and the lower portion is open, and an annular gasket 1d is provided between the cover seat 1a and the transparent cover shell 1b. When the transparent cover shell 1b and the cover seat 1a are connected by threads, the gasket 1d is pressed in the middle to improve the sealing of the connection between the two.
[0031] The cover seat 1a and the transparent cover shell 1b are each connected to a magnetic pole 1c and the two magnetic poles 1c attract each other. The magnetic pole 1c and the heating wire 1a-2 are both set away from the wiring terminal 1a-1. The suction force between the two magnetic poles 1c varies with the distance: the closer the distance, the greater the suction force; the farther the distance, the smaller the suction force. The suction force between the two is inversely proportional to the distance. After the cover seat 1a and the transparent cover shell 1b are threaded into place, the two magnetic poles 1c are close to attracting each other, and the suction force is at least 75% of the maximum suction force between the two. The attraction of the two magnetic poles 1c ensures that the connection between the cover seat 1a and the transparent cover shell 1b is stable.
[0032] In order to ensure the sealing between the cover seat 1a and the outer wall of the pipe where the pressure switch is installed, an annular groove is arranged on the lower surface of the cover seat 1a, and a gasket 1a-3 is arranged in the annular groove.
[0033] The installation process of the utility model is as follows: align the position of the pressure switch and the upper and lower through holes in the cover seat 1a, clamp the two "C"-shaped clamps 2a on the outer wall of the pipe where the pressure switch is installed, and lock them with bolts or buckles. After completion, the pressure switch is located in the upper and lower through holes in the cover seat 1a, and the pressure switch is connected to the wiring terminal 1a-1 in the cover seat 1a. The wiring terminal 1a-1 outside the cover seat 1a is then connected to the external circuit, and then the transparent cover shell 1b is installed on the cover seat 1a through threaded connection to achieve waterproof, dustproof and anti-smashing protection for the pressure switch.
[0034] The above description is only a preferred specific implementation manner of the present utility model, but the protection scope of the present utility model is not limited thereto. It should be pointed out that for ordinary technicians in this field, without departing from the concept of the present utility model, changes, modifications or additions should all fall within the protection scope of the present utility model.
Claims
1. Pressure switch protection device, characterized in that: The invention comprises a connected protective cover (1) and a fixing mechanism (2), wherein the protective cover (1) comprises a cover seat (1a), a detachable transparent cover shell (1b) is arranged on the cover seat (1a), the cover seat (1a) is provided with a wiring terminal (1a-1) penetrating the inner and outer walls, a heating wire (1a-2) is embedded in the cover seat (1a), and the cover seat (1a) and the transparent cover shell (1b) are each connected to a magnetic pole (1c), and the two magnetic poles (1c) attract each other.
2. The pressure switch protection device according to claim 1, characterized in that: The fixing mechanism (2) comprises two separate "C"-shaped hoops (2a), one of which is fixed to the cover seat (1a), and the two "C"-shaped hoops (2a) are connected via bolts or buckles.
3. The pressure switch protection device according to claim 1, characterized in that: The connection terminal (1a-1) is located on the inner wall and the outer wall of the cover seat (1a), and two connection posts are provided. The connection posts are connected one by one between the inner and outer walls of the cover seat (1a).
4. The pressure switch protection device according to claim 1, characterized in that: The upper portion of the cover seat (1a) is provided with an external thread, and the lower portion of the transparent cover shell (1b) is provided with an internal thread matching the external thread; the cover seat (1a) is through-connected from top to bottom, and the upper portion of the transparent cover shell (1b) is closed and the lower portion is open.
5. The pressure switch protection device according to claim 3, characterized in that: The heating wire (1a-2) and the magnetic pole (1c) are both arranged away from the wiring terminal (1a-1), and the heating wire (1a-2) is in a spirally wound shape.
6. The pressure switch protection device according to claim 4, characterized in that: An annular gasket (1d) is provided between the cover seat (1a) and the transparent cover shell (1b).
7. The pressure switch protection device according to claim 6, characterized in that: After the cover base (1a) and the transparent cover shell (1b) are screwed into place, the suction force of the two magnetic poles (1c) is at least 75% of the maximum suction force between the two poles.
8. The pressure switch protection device according to claim 2, characterized in that: The lower surface of the cover seat (1a) is provided with an annular groove, and a gasket (1a-3) is provided in the annular groove.