Dry pressure gauge

Abstract

The utility model discloses a dry-type pressure gauge, which relates to the technical field of measuring instruments, and is characterized in that the dry-type pressure gauge comprises a dial plate and a gauge cover sleeved on the peripheral wall of the dial plate, the dial plate is fixedly connected with a connecting pipe, the peripheral wall of the dial plate is provided with three arc-shaped grooves, and the three arc-shaped grooves are internally connected with connecting blocks in a sliding manner; a threaded hole is formed in the connecting block, the arc-shaped groove opposite to the connecting pipe is an alignment groove, and the other two arc-shaped grooves are sliding grooves. Through the arrangement of the arc-shaped groove, the meter cover can be rotated in the process of disassembling the meter cover, so that a screw for fixing the meter cover can be rotated from a position close to a pipeline to a position far away from the pipeline, and enough space is reserved around the screw for placing a screwdriver, so that people can conveniently unscrew the screw and disassemble the meter cover; the arrangement of the rubber ring increases the sealing performance between the gauge cover and the dial plate, so that dust and dirt are not easy to enter the pressure gauge through the peripheral wall of the dial plate.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of measuring instrument, more specifically, it relates to a dry pressure gauge. BACKGROUND

[0002] The pressure gauge is divided into dry pressure gauge and wet pressure gauge, and the dry pressure gauge is a kind of instrument commonly used to measure the pressure of liquid or gas, and its main feature is that the inside of the gauge is not filled with any liquid filler, and the dry pressure gauge is widely used in many standard pressure measurement applications due to its simple structure, low cost and not affected by liquid freezing or evaporation.

[0003] The existing dry pressure gauge includes a dial and a cover, the cover provides physical protection for the pressure gauge, prevents external objects (such as dust, dirt, etc.) from entering the inside of the pressure gauge, thereby ensuring the normal operation and long-term use of the pressure gauge, in order to ensure the firmness of the dial and the cover, some covers are directly connected with the dial by screws, and in order to ensure the fixing effect, the distance between adjacent two screws is equal, but when the pressure gauge is installed on the pipeline, the distance between the dial below and the pipeline is relatively small, so that the screw below the dial does not have enough space to extend into a screwdriver and other tools, thereby making the cover difficult to disassemble.

[0004] Therefore, a new scheme needs to be proposed to solve this problem. UTILITY MODEL CONTENT

[0005] In view of the deficiencies in the prior art, the utility model aims at providing a dry pressure gauge.

[0006] The above technical purpose of the utility model is realized by the following technical scheme: a dry pressure gauge, including a dial and a cover sleeved on the outer peripheral wall of the dial, the dial is fixedly connected with a connecting pipe, three arc-shaped grooves are formed in the outer peripheral wall of the dial, three connecting blocks are slidably connected in the arc-shaped grooves, threaded holes are formed in the connecting blocks, three through holes for penetrating screws are formed in the outer peripheral wall of the cover, the arc-shaped groove opposite to the connecting pipe is a positioning groove, the other two arc-shaped grooves are sliding grooves, and the connecting block in the sliding groove can be clamped at one end of the sliding groove facing the positioning groove.

[0007] The utility model is further provided with: one side of the connecting block away from the arc-shaped groove is fixedly connected with a limiting plate, and one side of the limiting plate is used for abutting against the cover.

[0008] The utility model is further provided with: two limiting blocks are fixedly connected to the cover, and the two limiting blocks are respectively used for clamping at two ends of the limiting plate.

[0009] The utility model further sets up: the outer peripheral wall of the dial is equipped with ring groove, the inner peripheral wall of the watch cover is equipped with rubber ring, the rubber ring can be inserted into ring groove and is close to the bottom wall of ring groove.

[0010] The utility model further sets up: the outer edge of the dial is equipped with the guide groove that presents ring and is intercommunication with ring groove.

[0011] The utility model further sets up: the section of rubber ring presents semicircle.

[0012] The utility model further sets up: the two inner walls of the sliding slot opposite are equipped with friction grain, and the friction grain sets up in the one end of sliding slot close to alignment groove.

[0013] Summarized above, the utility model has following beneficial effect:

[0014] Through setting up arc slot, make in the process of disassembling watch cover can rotate watch cover, make the screw of fixed watch cover can rotate from the position close to pipeline to the position far from pipeline, make that there is enough space around screw to place screwdriver, thereby facilitate people to unscrew screw, be convenient for the disassembly of watch cover. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the structural schematic diagram of the utility model;

[0016] Figure 2 It is the partial sectional view of the utility model;

[0017] Figure 3 It is Figure 2 The enlarged view of A part in the middle;

[0018] Figure 4 It is the explosion drawing of the dial and watch cover in the utility model.

[0019] In the drawing: 1, dial;2, watch cover;3, connecting pipe;4, connecting block;5, screw hole;6, through hole;7, alignment groove;8, sliding slot;9, limit plate;10, limit block;11, ring groove;12, rubber ring;13, guide groove;14, friction grain;15, round hole. DETAILED DESCRIPTION

[0020] The utility model is described in detail below in combination with the drawings and examples.

[0021] Dry pressure gauge, such as Figure 1 And Figure 4As shown, including the dial 1 and cover set on the dial 1 outer wall on the cover 2, the dial 1 is fixedly connected with the connecting pipe 3, the dial 1 is connected with the pipeline through the connecting pipe 3, three arc grooves are formed in the outer wall of the dial 1, the connecting block 4 is slidably connected in the three arc grooves, the threaded hole 5 is formed in the connecting block 4, the through hole 6 for passing through the screw is formed in the outer wall of the cover 2, the arc groove opposite to the connecting pipe 3 is the alignment groove 7, the other two arc grooves are the sliding grooves 8, the connecting block 4 located in the sliding groove 8 can be clamped in the end of the sliding groove 8 facing the alignment groove 7, the ends of the two sliding grooves 8 facing the alignment groove 7 are located on the two sides of the dial 1 respectively, people pass the screw through the through hole 6 and then threadedly connect it in the threaded hole 5, so as to realize the connection of the dial 1 and the cover 2, so that the cover 2 protects the dial 1, after people install the pressure gauge on the pipeline, the screw located on the alignment groove 7 is opposite to the connecting pipe 3, the other two screws located on the sliding grooves 8 are relatively close to the pipeline, when people need to remove the cover 2 from the dial 1, people first remove the screw on the alignment groove 7 with a screwdriver, then hold the cover 2 and rotate it, so that the connecting block 4 in one of the sliding grooves 8 slides to the position close to the alignment groove 7, at this time, the screw slides from the position close to the pipeline to the side of the dial 1, so that there is more space around the screw for placing the screwdriver, thereby facilitating the removal of the screw on the sliding groove 8 with the screwdriver, similarly, when removing the screw on the other sliding groove 8, rotate the cover 2 towards the other direction until the screw is located at the end of the sliding groove 8 close to the alignment groove 7, then remove the screw with the screwdriver, when the dial 1 is maintained, people need to reinstall the cover 2 on the dial 1, people first limit the connecting block 4 located on the sliding groove 8 at the end of the sliding groove 8 close to the alignment groove 7, then tighten the screw on the alignment groove 7 with the screwdriver, then rotate the cover 2, because the radii of the three arc grooves are equal, therefore, when people slide the connecting block 4 on the alignment groove 7 to the end of the alignment groove 7, one of the through holes 6 on the cover 2 will be aligned with the threaded hole 5 in the sliding groove 8, at this time, people can fix the cover 2 and the connecting block 4 with the screw, similarly, when installing the screw on the connecting block 4 in the other sliding groove 8, only need to slide the connecting block 4 located on the alignment groove 7 to the other end of the alignment groove 7, through such setting, during the installation of the cover 2, there is also more space around the screwdriver, which is convenient for people to operate.

[0022] As Figure 2 , Figure 3 and Figure 4As shown, the side of the connecting block 4 away from the arc-shaped groove is fixedly connected with a limiting plate 9, one side of the limiting plate 9 is used to abut against the cover 2, when one side of the cover 2 abuts against the limiting plate 9, the through hole 6 on the cover 2 is aligned with the threaded hole 5 on the connecting block 4 in the thickness direction of the dial 1, the cover 2 is fixedly connected with two limiting blocks 10, the two limiting blocks 10 are respectively used to be clamped at the two ends of the limiting plate 9, the two limiting blocks 10 are used to clamp the connecting block 4 located in the alignment groove 7, thereby facilitating the alignment of the through hole 6 on the cover 2 with the threaded hole 5 in the alignment groove 7, the outer peripheral wall of the dial 1 is provided with a ring groove 11, the inner peripheral wall of the cover 2 is provided with a rubber ring 12, the rubber ring 12 can be clamped into the ring groove 11 and abut against the bottom wall of the ring groove 11, when one side of the cover 2 abuts against the limiting plate 9, the rubber ring 12 is embedded in the ring groove 11 and abuts against the bottom wall of the ring groove 11, the arrangement of the rubber ring 12 increases the sealing between the cover 2 and the outer peripheral wall of the dial 1, so that dust and dirt are not easy to enter the pressure gauge through the outer peripheral wall of the dial 1, the outer edge of the dial 1 is provided with a guide groove 13 in the shape of a ring and in communication with the ring groove 11, in the process that people sleeve the cover 2 on the outer peripheral wall of the dial 1, the rubber ring 12 enters the guide groove 13 first, because the cross section of the rubber ring 12 is semicircular, the inner wall of the guide groove 13 will be in contact with the circular arc surface of the rubber ring 12, thereby facilitating the deformation of the rubber ring 12, the arrangement of the guide groove 13 makes the deformation process of the rubber ring 12 not too fast, thereby facilitating the clamping of the rubber ring 12 into the ring groove 11, the opposite two inner walls of the sliding groove 8 are provided with friction lines 14, the friction lines 14 are arranged at the end of the sliding groove 8 close to the alignment groove 7, when people move the connecting block 4 to the end of the sliding groove 8 close to the alignment groove 7, because of the arrangement of the friction lines 14, the friction between the connecting block 4 and the inner wall of the sliding groove 8 is relatively large, thereby the connecting block 4 can be clamped, the sliding friction between the connecting block 4 and the cover 2 is smaller than the friction between the connecting block 4 and the inner wall of the sliding groove 8, and through this clamping mode, people can operate conveniently, the bottom wall of the alignment groove 7 is provided with a plurality of round holes 15, the threaded hole 5 on the connecting block 4 penetrates the connecting block 4, after the cover 2 is fixed by three screws and three connecting blocks 4, people can continue to tighten the screws in the alignment groove 7, so that one end of the screw is embedded in the round hole 15, thereby the cover 2 and the dial 1 are not easy to rotate relatively.

[0023] The preferred embodiments of the present application have been described above, the protection scope of the present application is not limited to the above-mentioned embodiments, any technical solutions falling within the concept of the present application shall fall within the protection scope of the present application. It should be noted that, for ordinary skilled in the art, some improvements and decorations without departing from the concept of the present application shall also be considered as falling within the protection scope of the present application.

Claims

1. A dry pressure gauge, comprising a dial plate (1) and a cover (2) sleeved on the peripheral wall of the dial plate (1), and a connecting pipe (3) fixedly connected to the dial plate (1), characterized in that: Three arc-shaped grooves are formed in the outer peripheral wall of the watch dial (1), and a connecting block (4) is slidably connected in each of the arc-shaped grooves; a threaded hole (5) is formed in the connecting block (4); three through holes (6) for penetrating screws are formed in the outer peripheral wall of the watch cover (2); the arc-shaped groove opposite to the connecting pipe (3) is a positioning groove (7); the other two arc-shaped grooves are sliding grooves (8); and the connecting block (4) located in the sliding groove (8) can be clamped at one end of the sliding groove (8) facing the positioning groove (7).

2. The dry gauge of claim 1, wherein: A limiting plate (9) is fixedly connected to the side of the connecting block (4) away from the arc-shaped groove; and one side of the limiting plate (9) is used for abutting against the watch cover (2).

3. The dry gauge of claim 2, wherein: Two limiting blocks (10) are fixedly connected to the watch cover (2); and the two limiting blocks (10) are respectively used for clamping at the two ends of the limiting plate (9).

4. The dry gauge of claim 3, wherein: An annular groove (11) is formed in the outer peripheral wall of the watch dial (1); a rubber ring (12) is arranged on the inner peripheral wall of the watch cover (2); and the rubber ring (12) can be clamped into the annular groove (11) and abut against the bottom wall of the annular groove (11).

5. The dry gauge of claim 4, wherein: A guide groove (13) in the shape of a ring and in communication with the annular groove (11) is formed in the outer edge of the watch dial (1).

6. The dry gauge of claim 5, wherein: The cross section of the rubber ring (12) is in the shape of a semicircle.

7. The dry gauge of claim 1, wherein: Friction lines (14) are arranged on the opposite two inner walls of the sliding groove (8); and the friction lines (14) are arranged at one end of the sliding groove (8) close to the positioning groove (7).

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