Digital display pressure gauge convenient to assemble

Abstract

The utility model belongs to the technical field of electronic pressure measuring equipment, and provides a digital display pressure gauge convenient to assemble, which comprises a digital display pressure gauge main body, a gauge stand arranged at the bottom of the digital display pressure gauge main body, an air inlet pipe arranged on the gauge stand, and a connecting sleeve arranged at the end part of the air inlet pipe, the sealing ring is arranged in the connecting sleeve and abuts against the end of the air inlet pipe, the locking handles are rotationally arranged on the two sides of the connecting sleeve, and a first convex part and a second convex part which are oppositely arranged are arranged at the ends of the locking handles; one end of the connecting plug is used for being connected with an external pipeline, the connecting plug comprises a front section part, a middle section part and a rear section part, the middle section part is concave inwards relative to the front section part and the rear section part to form a clamping groove structure, groove type channels are symmetrically formed in the two sides of the front section part, and limiting blocks are symmetrically arranged on the two sides of the rear section part. According to the utility model, the quick assembly of the air inlet pipe of the digital display pressure gauge and the external pipeline can be realized, and the problems in the prior art are effectively solved.

Description

Technical Field

[0001] This utility model belongs to the technical field of electronic pressure measuring equipment, specifically, it relates to a digital pressure gauge that is easy to assemble. Background Technology

[0002] A digital pressure gauge is a measuring instrument that directly displays pressure values ​​on a digital display screen. Compared with traditional mechanical pointer pressure gauges, it has higher accuracy, readability, and functional expandability, and is widely used in industries, laboratories, medical fields, etc. The working principle of a digital pressure gauge is based on the signal conversion and electronic processing technology of a pressure sensor, which converts the physical pressure value into an electrical signal, and then processes and displays it through digital circuits. When a digital pressure gauge is used to measure the pressure of a gas or liquid medium, it must be connected to the system being measured through a pipeline (such as an air inlet pipe or hydraulic pipe) so that the medium pressure is transmitted to the sensor's sensing diaphragm. The conventional connection method is to connect to the pipeline of the system being measured through a threaded interface. The main drawbacks are as follows: (1) Over-tightening during installation may cause deformation of the sensor diaphragm, affecting the measurement accuracy; (2) After long-term use, the threaded connection may rust or jam, making it difficult to disassemble and maintain; (3) The threads are prone to loosening under vibration, leading to leakage or unstable readings. Utility Model Content

[0003] The purpose of this invention is to solve the problems existing in the prior art and to provide a digital pressure gauge that is easy to assemble.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] A digital pressure gauge that is easy to assemble includes a digital pressure gauge body, a gauge base disposed at the bottom of the digital pressure gauge body, an air inlet pipe disposed on the gauge base, a connecting sleeve disposed at the end of the air inlet pipe, a sealing ring disposed in the connecting sleeve and abutting the end of the air inlet pipe, and a locking handle rotatably disposed on both sides of the connecting sleeve and symmetrically arranged. The end of the locking handle is provided with two opposing first protrusions and second protrusions. An intrusion through hole for the first protrusions and second protrusions to move is provided on the connecting sleeve at the position of the locking handle. It also includes a connecting plug for connecting to an external pipe at one end. The connecting plug includes a front section, a middle section and a rear section. The middle section is recessed inward relative to the front section and the rear section to form a groove structure. Grooved channels are symmetrically arranged on both sides of the front section. Limiting blocks are symmetrically arranged on both sides of the rear section.

[0006] Furthermore, during the locking process, the second protrusion is placed inside the connecting sleeve through the intrusion hole, and the grooved channel of the connecting plug corresponds to the second protrusion.

[0007] Furthermore, in the locked state, the first protrusion is placed inside the connecting sleeve through the intrusion hole and is secured at the middle section position.

[0008] Furthermore, in the horizontal direction, the limiting block and the grooved channel located on the same side correspond to each other.

[0009] Furthermore, an annular groove is provided on the inner wall of the end of the connecting sleeve adjacent to the air intake pipe, and the sealing ring is placed in the annular groove.

[0010] Furthermore, the connecting sleeve is coaxially arranged with the air intake pipe and the two are integrally structured.

[0011] Furthermore, the front section, middle section, and rear section are hollow, and the three are coaxially arranged and form an integral structure. The rear section is used to connect to an external pipe.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] This invention features an air inlet pipe mounted on a base, a connecting sleeve at the end of the air inlet pipe, and locking handles rotatably mounted on both sides of the connecting sleeve. The ends of the locking handles have two opposing first and second protrusions. It also includes a connecting plug for use with the connecting sleeve. The connecting plug is inserted into the connecting sleeve, and then the locking handles are rotated and locked through their ends. This allows for quick assembly of the digital pressure gauge's air inlet pipe with external piping. The operation is simple, and the connection is secure. It is not prone to loosening under vibration and avoids the over-tightening problem associated with bolted connections. Furthermore, the absence of a bolted connection structure avoids the drawbacks of difficult disassembly and maintenance due to corrosion at the bolted connection interface. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the assembly structure of this utility model.

[0015] Figure 2 This is a schematic diagram of the locking state structure of this utility model.

[0016] Figure 3 This is a schematic diagram of the structure of this utility model in its unlocked state.

[0017] The corresponding labels in the attached drawings are as follows: 1-Digital pressure gauge body, 2-Gas base, 3-Inlet pipe, 4-Connecting sleeve, 5-Sealing ring, 6-Locking handle, 7-Limiting block, 8-First protrusion, 9-Second protrusion, 10-External pipe, 11-Connecting plug, 12-Front section, 13-Middle section, 14-Rear section, 15-Groove channel, 16-Annular groove, 17-Positioning protrusion. Detailed Implementation

[0018] To enable those skilled in the art to have a clearer understanding of this utility model, the following detailed description is provided in conjunction with embodiments. It should be understood that the specific embodiments described below are merely illustrative of this utility model and facilitate understanding. The technical solutions provided by this utility model are not limited to those provided in the following embodiments, nor should they limit the scope of protection of this utility model.

[0019] Unless otherwise defined, the technical or scientific terms used in this application shall have the ordinary meaning understood by one of ordinary skill in the art to which this disclosure pertains. The terms "comprising" or "including," and similar expressions used in this application, mean that the element or object preceding the term encompasses the elements or objects listed following the term and their equivalents, without excluding other elements or objects. Positional relation terms such as "upper," "lower," "left," "right," "front," and "rear" are determined based on the layout orientation of the accompanying drawings and are used only to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0020] Example

[0021] like Figures 1-3 As shown, this embodiment provides a digital pressure gauge that is easy to assemble, including a digital pressure gauge body 1, a gauge base 2, an air inlet pipe 3, a connecting sleeve 4, a sealing ring 5, and a locking handle 6. The gauge base 2 is fixed to the bottom of the digital pressure gauge body 1, and the air inlet pipe 3 is fixedly installed on the gauge base 2 and integrally formed coaxially with the connecting sleeve 4. The inner wall of the end of the connecting sleeve 4 adjacent to the air inlet pipe is provided with an annular groove 16, and the sealing ring 5 is embedded in the annular groove 16. The left end of the annular groove 16 abuts against the left side of the sealing ring, and the right side of the sealing ring abuts against the inner end face of the connecting sleeve. During connection, a sealing interface is formed based on the sealing ring 5.

[0022] The connecting sleeve 4 has symmetrically arranged rotatable locking handles 6 on both sides. A first protrusion 8 and a second protrusion 9 are distributed at the ends of the handles, and these two protrusions are integrally formed with the handles. The connecting sleeve 4 has an insertion through-hole (not shown in the figure) at the position corresponding to the handle end, allowing the protrusions to move. The locking handle 6 has two working positions: in the unlocked position, the second protrusion 9 extends into the inner cavity of the connecting sleeve through the insertion through-hole; in the locked position, the first protrusion 8 extends into the inner cavity of the sleeve.

[0023] This embodiment also includes a connector 11 used in conjunction with a connecting sleeve. The connector 11 adopts a three-section hollow integrated structure consisting of a front section 12, a middle section 13, and a rear section 14. The outer diameters of the front section 12, the middle section 13, and the rear section 14 match the inner diameter of the connecting sleeve 4, allowing the connector to be smoothly inserted into the connecting sleeve. The front section 12 has symmetrically formed grooved channels 15 on both sides for the passage of the second protrusion 9. At the same time, the outer diameter of the front section 12 matches the inner diameter of the annular groove 16, so that when the front section moves to the right relative to the air intake pipe, it can press the sealing ring. The middle section 13 is concave to form an annular groove structure, and its groove is arc-shaped, forming a mechanical interlock with the first protrusion 8 when locked. The rear section 14 is used to connect to external pipes. There are various connection methods, such as metal welding. The outer wall of the rear section 14 is symmetrically provided with limiting blocks 7, which are horizontally aligned with the grooved channels 15 to ensure accurate directional positioning when the connector is inserted.

[0024] In this embodiment, the structure for aligning the connector plug and the connector sleeve is as follows: it includes the limiting block 7 provided on the rear section 14, and positioning protrusions 17 that cooperate with the limiting block 7 are symmetrically provided on both sides of the left end of the connector sleeve 4.

[0025] The assembly process of this utility model is as follows: When connecting, the locking handle is turned to the left, and the second protrusion at the end of the locking handle extends into the inner cavity of the connecting sleeve through the intrusion hole, aligning the limiting block of the connecting plug with the positioning protrusion at the end of the connecting sleeve. Then, the connecting plug is inserted into the connecting sleeve (during this process, the second protrusion passes through the groove channel). After the limiting block and the positioning protrusion abut, the connecting plug is rotated (generally 90°). At this time, the second protrusion is located in the annular groove structure of the middle section. The locking handle is turned to the right, and the second protrusion at the end of the locking handle rotates to the outside of the connecting sleeve. The first protrusion extends into the inner cavity of the connecting sleeve through the intrusion hole and forms a mechanical interlock with the middle section of the connecting plug. At the same time, the right end of the first protrusion abuts against and presses against the outer left end of the front section, and the front section presses against the sealing ring.

[0026] The above description constitutes the preferred embodiment of this utility model. It should be noted that those skilled in the art can make several improvements without departing from the design principles and technical solutions of this utility model, and these improvements should also be considered within the protection scope of this utility model.

Claims

1. A digital pressure gauge that is easy to assemble, characterized in that, The instrument includes a digital pressure gauge body (1), a gauge base (2) located at the bottom of the digital pressure gauge body (1), an air inlet pipe (3) located on the gauge base (2), a connecting sleeve (4) located at the end of the air inlet pipe (3), a sealing ring (5) located inside the connecting sleeve (4) and abutting the end of the air inlet pipe (3), and locking handles (6) rotatably arranged on both sides of the connecting sleeve (4) in a symmetrical arrangement. The end of the locking handle (6) is provided with two oppositely arranged first protrusions (8) and second protrusions (9). An intrusion through hole is provided on the connecting sleeve (4) at the position of the locking handle (6) for the first protrusion (8) and the second protrusion (9) to move; it also includes a connecting plug (11) with one end for connecting to an external pipe (10). The connecting plug (11) includes a front section (12), a middle section (13) and a rear section (14). The middle section (13) is recessed inward relative to the front section (12) and the rear section (14) to form a slot structure. Grooved channels (15) are symmetrically provided on both sides of the front section (12).

2. The easily assembled digital pressure gauge according to claim 1, characterized in that: Limiting blocks (7) are symmetrically arranged on both sides of the rear section (14), and positioning protrusions (17) that cooperate with the limiting blocks (7) are symmetrically arranged on both sides of the left end of the connecting sleeve (4).

3. The easily assembled digital pressure gauge according to claim 2, characterized in that: During the locking process, the second protrusion (9) is placed inside the connecting sleeve (4) through the intrusion through hole, and the groove channel (15) of the connecting plug (11) corresponds to the second protrusion (9).

4. The easily assembled digital pressure gauge according to claim 3, characterized in that: In the locked state, the first protrusion (8) is placed inside the connecting sleeve (4) through the intrusion through hole and is locked at the position of the middle section (13).

5. The easily assembled digital pressure gauge according to claim 4, characterized in that: In the horizontal direction, the limiting block (7) and the grooved channel (15) located on the same side correspond to each other.

6. The easily assembled digital pressure gauge according to claim 5, characterized in that: An annular groove (16) is provided on the inner wall of the end of the connecting sleeve (4) adjacent to the air inlet pipe (3), and the sealing ring (5) is placed in the annular groove (16).

7. The easily assembled digital pressure gauge according to any one of claims 1 to 6, characterized in that: The connecting sleeve (4) and the air intake pipe (3) are coaxially arranged and the two are an integral structure.

8. The easily assembled digital pressure gauge according to claim 7, characterized in that: The front section (12), middle section (13) and rear section (14) are hollow structures, and the three are coaxially arranged and form an integral structure. The rear section (14) is used to connect to the external pipe (10).

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