Electronic pressure switch

Abstract

An electronic pressure switch comprises a Hirschmann joint, the output end of the Hirschmann joint is connected with a connecting piece, a circuit board is fixedly arranged in an inner cavity of the connecting piece, one end of the circuit board is connected with the Hirschmann joint, and a pressure sensing core is fixedly arranged on the bottom wall of the inner cavity of the connecting piece. The pressure sensing core body is installed and fixed on the wall surface of the inner cavity of the connecting piece, the pressure sensing core body is connected with the circuit board through a wire, and the bottom wall of the inner cavity of the connecting piece is provided with an opening; according to the utility model, the circuit board and the pressure sensing core body are used for measuring the pressure value of a medium, so that the accuracy and the sensitivity are improved, the internal space of equipment is saved, the whole size of the equipment is reduced, the equipment can be applied to a specific narrow space, and the adaptability of products is improved; the device is used for preventing the situation that when equipment to be detected is just started, fluid is too large, instant huge impact force is generated, and an instrument is damaged.

Description

Technical Field

[0001] The utility model relates to the field of control switches, in particular to an electronic pressure switch. Background Art

[0002] In engineering machinery and other related fields, the use of pressure switches is increasing, and they are gradually becoming an indispensable component in the industry. Pressure switches can be widely used in the fields of petroleum, chemical industry, metallurgy, electric power, hydraulic transmission, etc. to measure and control the gauge pressure and absolute pressure of various gases and liquids. They are ideal intelligent measurement and control instruments for industrial sites.

[0003] At present, pressure switches all use mechanical working methods, which have slow response speed, low measurement accuracy, and large size. They cannot be used in specific situations where space is narrow. Due to space limitations, they are not suitable for use in today's precision and compact equipment. Utility Model Content

[0004] The purpose of the utility model is to provide an electronic pressure switch to solve the problems raised in the above background technology.

[0005] The utility model solves the technical problem by adopting the following technical solutions:

[0006] An electronic pressure switch comprises a Hirschmann connector, wherein the output end of the Hirschmann connector is connected to a connector, a circuit board is fixedly provided in an inner cavity of the connector, one end of the circuit board is connected to the Hirschmann connector, a pressure-sensitive core is fixedly provided on the bottom wall of the inner cavity of the connector, the pressure-sensitive core is mounted and fixed on the inner cavity wall of the connector, the core is connected to the circuit board through a wire, an opening is provided on the bottom wall of the inner cavity of the connector, a hollow tube is fixedly installed on the opening, a process connection thread is fixedly provided on the outside of the hollow tube, the process connection thread is connected to an access port of a device to be detected, a damping screw is provided in a pressure-inducing hole in the hollow tube, and the damping screw is used to prevent the fluid from being too large and generating a huge impact force when the device to be detected is just turned on, thereby causing damage to the instrument.

[0007] Preferably, a waterproof connector is fixedly provided on the side of the Hirschmann connector, and the waterproof connector is used to connect cables, which can effectively prevent water from flowing into the interior of the Hirschmann connector through the external connecting cable.

[0008] Preferably, a sealing gasket is provided at the connection between the Hirschmann joint and the connecting piece to prevent liquid from entering the equipment.

[0009] The advantages and positive effects of the utility model are:

[0010] 1. The utility model measures the medium pressure value through the circuit board and the pressure-sensitive core, which improves the accuracy and sensitivity compared with the previous mechanical method, saves the internal space of the equipment, reduces the entire volume of the equipment, can be used in specific narrow spaces, and improves the adaptability of the product. At the same time, a damping screw is arranged in the pressure-inducing hole of the hollow tube to prevent the fluid from being too large when the equipment to be tested is just turned on, generating a huge instantaneous impact force and causing damage to the instrument. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0012] Figure 1 This is a schematic diagram of the overall structure of an electronic pressure switch of the utility model;

[0013] Figure 2 For this utility model Figure 1 Front view;

[0014] Figure 3 For this utility model Figure 2 Enlarged schematic diagram at point A in the middle.

[0015] The marks in the accompanying drawings are described as follows: 11, connecting part; 12, Hirschmann connector; 13, opening; 14, hollow tube; 15, process connection thread; 16, waterproof connector; 17, circuit board; 18, pressure-sensitive core; 19, damping screw; 20, sealing gasket. DETAILED DESCRIPTION

[0016] Now the utility model is further described in detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the utility model in a schematic manner, and therefore only show the components related to the utility model.

[0017] Combine the following Figure 1-3 The utility model is described in detail. For the convenience of description, the directions mentioned below are defined as follows: the up, down, left, right, front and back directions mentioned below are the same as Figure 1 The view direction is consistent in front, back, left, right, up and down directions. Figure 1 It is a front view of the device of the utility model. Figure 1 The directions shown are consistent with the front, back, left, right, up and down directions of the device of the utility model when viewed from the front.

[0018] The following is a further description of the embodiments of the present invention in conjunction with the accompanying drawings:

[0019] See also Figure 1-3The utility model provides an embodiment: an electronic pressure switch, including a Hirschmann connector 12, the output end of the Hirschmann connector 12 is connected to a connector 11, a circuit board 17 is fixedly provided in the inner cavity of the connector 11, one end of the circuit board 17 is connected to the Hirschmann connector 12, a pressure-sensitive core 18 is fixedly provided on the bottom wall of the inner cavity of the connector 11, the pressure-sensitive core 18 is installed on the inner cavity wall of the connector 11, the pressure-sensitive core 18 is connected to the circuit board 17 through a wire, an opening 13 is provided on the bottom wall of the inner cavity of the connector 11, a hollow tube 14 is fixedly installed on the opening 13, a process connection thread 15 is fixedly provided on the outside of the hollow tube 14, the process connection thread 15 is connected to the access port of the device to be detected, a damping screw 19 is provided in the pressure-introducing hole of the hollow tube 14, and the damping screw 19 is used to prevent the fluid from being too large when the device to be detected is just detected, generating a huge impact force and causing damage to the instrument.

[0020] In addition, in one embodiment, a waterproof connector 16 is fixedly provided on the side of the Hirschmann connector 12. The waterproof connector 16 is used to connect cables and can effectively prevent water from flowing into the Hirschmann connector 12 through external connection cables.

[0021] In addition, in one embodiment, a sealing gasket 20 is provided at the connection between the Hirschmann joint 12 and the connector 11 to prevent liquid from entering the device.

[0022] During specific implementation, the process connection thread 15 on the equipment is rotated and connected to the access port of the instrument to be detected, and the liquid or gas enters the hollow tube 14. The pressure value is detected through the pressure-sensitive core 18. At the same time, the damping screw 19 in the inner cavity of the hollow tube 14 plays a buffering role, protecting the pressure-sensitive core 18 and increasing the service life. The pressure value of the measured medium is detected through the circuit board 17 and the core 18, which saves the internal space of the equipment and thus reduces the entire volume of the equipment. It can be used in specific narrow spaces, thereby improving the adaptability of the product.

[0023] It should be emphasized that the embodiments described in the present invention are illustrative rather than restrictive. Therefore, the present invention is not limited to the embodiments described in the specific implementation manner. Any other implementation manners derived by those skilled in the art based on the technical solution of the present invention also fall within the scope of protection of the present invention.

Claims

1. An electronic pressure switch, comprising a Hirschmann connector (12), characterized in that: The output end of the Hirschmann connector (12) is connected to the connector (11); a circuit board (17) is fixedly provided in the inner cavity of the connector (11); one end of the circuit board (17) is connected to the Hirschmann connector (12); a pressure-sensitive core (18) is fixedly provided on the bottom wall of the inner cavity of the connector (11); the pressure-sensitive core (18) is connected to the circuit board (17) via a wire; an opening (13) is provided on the bottom wall of the inner cavity of the connector (11); a hollow tube (14) is fixedly installed on the opening (13); a process connection thread (15) is fixedly provided on the outside of the hollow tube (14); and a damping screw (19) is provided in the pressure-inducing hole of the hollow tube (14).

2. An electronic pressure switch according to claim 1, characterized in that: A waterproof joint (16) is fixedly provided on the side of the Hirschmann joint (12).

3. An electronic pressure switch according to claim 1, characterized in that: A sealing gasket (20) is provided at the connection between the Hirschmann joint (12) and the connecting piece (11).

Images