Pressure gauge flow channel structure

Abstract

The utility model discloses a pressure gauge flow channel structure which comprises a gauge body, a dial is installed at the display end of the gauge body, a connecting and guiding pipe is installed at the liquid inlet end of the gauge body, a pipe base is installed at the bottom end of an inner cavity of the gauge body, the pipe base is fixedly communicated with the top end of the connecting and guiding pipe, and a back disc is fixedly connected to the inner side of the pipe base. An elastic tube is installed at the connector end of the tube seat, a concave block is fixedly connected to the front end of the elastic tube, a convex piece is fixedly connected to the front end of the concave block, a rotating cap is installed on the upper surface of the convex piece, and the bottom of the rotating cap penetrates through the upper surface of the convex piece. According to the pressure gauge flow channel structure of the utility model, when the pressure is small, the torsion spring below the tooth column performs reverse reset on the tooth column I and the gear II engaged with the tooth column I, so that the pressure index can be reduced, and meanwhile, after liquid is guided in through the flow channel in the tube seat, the flow channel and the elastic tube are not in linear connection but in L-shaped connection design, so that the flow channel is more stable. And the pressure reduction effect in the liquid process can be ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of a pressure gauge flow channel structure, in particular to a pressure gauge flow channel structure. Background Art

[0002] A pressure gauge is an instrument that uses an elastic element as a sensitive element to measure and indicate pressure higher than the ambient pressure. It is widely used in almost all industrial processes and scientific research fields, and can be seen everywhere in thermal pipelines, oil and gas transmission, water and gas supply systems, vehicle repair and maintenance shops, etc.

[0003] For example, Patent Publication No. 202122206344.6 discloses a pressure gauge inlet flow channel structure and a pressure gauge, the key points of its technical solution are: including a gauge seat, the gauge seat is provided with a fluid channel, the fluid channel is provided with an adaptable bolt body, a spiral flow channel cavity for mitigating the impact force of the fluid is provided between the bolt body and the inner wall of the gauge seat, and the two ends of the spiral flow channel cavity are respectively connected to the water inlet and the inner end cavity of the gauge seat. The working principle of the utility model is as follows: water flows into the inlet of the spiral flow channel cavity, and then changes the direction of the water flow, and rotates along the spiral flow channel cavity to enter the interior. The spiral flow channel cavity plays a role of blocking and mitigating, thereby reducing the pulse impact of the fluid on the internal components of the pressure gauge and protecting the structure of the pressure gauge. The utility model has a reasonable structural design, is easy to use, has good reliability, can mitigate the pulse impact on the pressure gauge, retains the gap of the fluid channel to the maximum extent, and does not affect the sensitivity of the pressure gauge.

[0004] When the above-mentioned pressure gauge is in use, the design of its fluid flow channel will cause the liquid to directly impact the elastic tube, which will cause damage to the spring. The design of the straight flow channel will cause the pressure to directly connect to the elastic tube. At the same time, the deformation effect of the bottom of the elastic tube caused by the impact of the pressure is too forced. Utility Model Content

[0005] The utility model aims to solve the shortcomings in the prior art and proposes a pressure gauge flow channel structure.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a pressure gauge flow channel structure, including a meter body, a display end of the meter body is equipped with a dial, a liquid inlet end of the meter body is equipped with a connecting tube, a tube seat is installed at the bottom end of the inner cavity of the meter body, the tube seat is fixedly connected to the top end of the connecting tube, the inner side of the tube seat is fixedly connected to a back plate, an elastic tube is installed at the interface end of the tube seat, the front end of the elastic tube is fixedly connected to a concave block, the front end of the concave block is fixedly connected to a convex piece, the upper surface of the convex piece is equipped with a rotating cap, the bottom of the rotating cap passes through the upper surface of the convex piece, and is rotatably connected to the back side of the meter body.

[0007] As a further description of the above technical solution:

[0008] The outer wall of the rotating cap is rotatably connected with a connecting piece, one end of the connecting piece is installed with a hinge head, one end of the hinge head is installed with a second gear, and the top end of the second gear is fixedly connected with a cover plate.

[0009] As a further description of the above technical solution:

[0010] An eccentric column is installed at the axial center of the gear 2, and the bottom end of the eccentric column is fixedly connected with the gear 2, and the gear 2 and the eccentric column are eccentrically connected.

[0011] As a further description of the above technical solution:

[0012] A flow channel is provided in the inner cavity of the tube seat.

[0013] The flow channel is communicated with the interface end of the bullet tube, and a bullet cavity is arranged inside the bullet tube.

[0014] As a further description of the above technical solution:

[0015] The outer wall of the gear 2 is provided with a cover plate, the outer wall of the cover plate contacts with a tooth column 1, and the axial center of the tooth column 1 is provided with a tooth opening.

[0016] As a further description of the above technical solution:

[0017] The concave block is concave.

[0018] As a further description of the above technical solution:

[0019] A back plate is arranged at the bottom of the tooth opening, and the bottom of the tooth opening passes through the upper part of the first tooth column and is fixedly connected with the back side of the back plate.

[0020] The utility model has the following beneficial effects:

[0021] 1. Compared with the prior art, the flow channel structure of the pressure gauge, after the connecting pipe part is introduced into the pipe seat, liquid passes through the elastic tube connected to the side wall of the pipe seat, and the liquid in the back plate impacts the elastic tube to deform, and the deformation of the elastic tube will drive the concave block connected to the top thereof to deviate. After the concave block deviates, the swivel cap hinged by the concave block through the convex piece part drives the connecting piece to swing, and the connecting piece is connected to the eccentric column on the gear 2 through the hinge joint, so that the hinge joint as the middle connecting part will drive the gear 2 to rotate. After the gear 2 rotates, the tooth column 1 meshed with the outer wall of the gear 2 will also rotate, and the torsion spring installed at the lower part of the outer wall of the tooth column 1 is used to reset the tooth column 1.

[0022] 2. Compared with the prior art, in this pressure gauge flow channel structure, when the pressure is relatively low, the torsion spring under the tooth column will reset the tooth column 1 and the meshing gear 2 in the opposite direction to reduce its pressure index. At the same time, after the liquid is introduced through the flow channel in the tube seat, the flow channel and the elastic tube are not connected in a straight line, but are L-shaped connection designs, which can ensure a pressure reduction effect in the liquid process. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A schematic diagram of a pressure gauge body structure of a flow channel structure proposed by the utility model;

[0024] Figure 2 A schematic diagram of a dial structure of a pressure gauge flow channel structure proposed by the utility model;

[0025] Figure 3 A schematic diagram of the internal structure of a pressure gauge flow channel structure provided by the utility model;

[0026] Figure 4 A cross-sectional view of a pressure gauge body of a flow channel structure proposed by the utility model;

[0027] Figure 5 The utility model provides a schematic structural diagram of an elastic tube of a pressure gauge flow channel structure.

[0028] Legend:

[0029] Meter body 1, dial 2, connecting tube 3, tooth mouth 4, gear column 1 5, gear 2 6, recessed block 7, connecting piece 8, back plate 9, hinged head 10, tube seat 11, eccentric column 12, cover plate 13, vertical axis 14, elastic cavity 15, flow channel 16, convex piece 17, rotating cap 18, elastic tube 19. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] Reference Figure 1-5The utility model provides a pressure gauge flow channel structure: comprising a meter body 1, a dial plate 2 is installed at the display end of the meter body 1, a connecting pipe 3 is installed at the liquid inlet end of the meter body 1, a tube seat 11 is installed at the bottom end of the inner cavity of the meter body 1, the tube seat 11 is fixedly connected with the top of the connecting pipe 3, a back plate 9 is fixedly connected to the inner side of the tube seat 11, an elastic tube 19 is installed at the interface end of the tube seat 11, a concave block 7 is fixedly connected to the front end of the concave block 7, a convex piece 17 is fixedly connected to the front end of the concave block 7, a rotating cap 18 is installed on the upper surface of the convex piece 17, and the bottom of the rotating cap 18 penetrates the convex piece The upper surface of the rotating cap 17 is rotatably connected to the back of the meter body 1. The outer wall of the rotating cap 18 is rotatably connected to the connecting piece 8. One end of the connecting piece 8 is installed with a hinge head 10. When the liquid enters the tube seat 11 through the receiving tube 3, the elastic tube 19 connected to the side wall of the tube seat 11 passes through the liquid, and the liquid in the back plate 9 impacts the elastic tube 19 to deform. The deformation of the elastic tube 19 will drive the concave block 7 connected to the top thereof to deviate. After the concave block 7 deviates, the concave block 7 drives the connecting piece 8 to swing through the rotating cap 18 hinged to the convex piece 17.

[0032] Reference Figure 3-5 , a gear 2 6 is installed at one end of the hinge head 10, a cover sheet 13 is fixedly connected to the top of the gear 2 6, an eccentric column 12 is installed at the axial part of the gear 2 6, the bottom end of the eccentric column 12 is fixedly connected to the gear 2 6, the gear 2 6 and the eccentric column 12 are eccentrically connected, a flow channel 16 is opened in the inner cavity of the tube seat 11, the flow channel 16 is connected to the interface end of the elastic tube 19, and an elastic cavity 15 is arranged inside the elastic tube 19, a cover sheet 13 is opened on the outer wall of the gear 2 6, the outer wall of the cover sheet 13 contacts with a tooth column 1 5, a tooth mouth 4 is installed at the axial part of the tooth column 1 5, the concave block 7 is concave, and the bottom of the tooth mouth 4 is arranged A back plate 9 is provided, the bottom of the tooth opening 4 passes through the upper part of the tooth column 15 and is fixedly connected to the back of the back plate 9, and the connecting piece 8 is connected to the eccentric column 12 on the gear 2 6 through the hinge joint 10, so that the hinge joint 10 as the middle connecting part will drive the gear 2 6 to rotate. After the gear 2 6 rotates, the tooth column 15 meshed with the outer wall of the gear 2 6 will also rotate. At the same time, the torsion spring installed at the lower part of the outer wall of the tooth column 15 is used to reset the tooth column 15. When the pressure is small, the torsion spring under the tooth column 15 will reversely reset the tooth column 15 and the meshed gear 2 6 to reduce its pressure index.

[0033] Working principle: When the liquid enters the tube seat 11 through the receiving tube 3, the liquid passes through the elastic tube 19 connected to the side wall of the tube seat 11, and the liquid in the back plate 9 impacts the elastic tube 19 to deform, and the deformation of the elastic tube 19 will drive the concave block 7 connected to its top to deviate. After the concave block 7 deviates, the concave block 7 drives the connecting piece 8 to swing through the rotating cap 18 hinged at the convex piece 17, and the connecting piece 8 is connected to the eccentric column 12 on the gear 2 6 through the hinge joint 10, so that the hinge joint 10 as the middle connecting part will drive Gear 2 6 rotates, and after gear 2 6 rotates, the tooth column 1 5 meshed with the outer wall of gear 2 6 will also rotate. At the same time, the torsion spring installed at the lower part of the outer wall of tooth column 1 5 is used to reset the tooth column 1 5. When the pressure is small, the torsion spring under the tooth column 1 5 will reversely reset the tooth column 1 5 and the meshed gear 2 6 to reduce its pressure index. At the same time, after the liquid is introduced through the flow channel 16 in the tube seat 11, the flow channel 16 and the elastic tube 19 are not connected in a straight line, but are L-shaped connection designs, which can ensure that there is a pressure reduction effect in the liquid process.

[0034] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A pressure gauge flow channel structure, comprising a gauge body (1), characterized in that: The display end of the meter body (1) is provided with a dial (2), the liquid inlet end of the meter body (1) is provided with a connecting tube (3), the bottom end of the inner cavity of the meter body (1) is provided with a tube seat (11), the tube seat (11) is fixedly connected to the top end of the connecting tube (3), the inner side of the tube seat (11) is fixedly connected to a back plate (9), the interface end of the tube seat (11) is provided with an elastic tube (19), the front end of the elastic tube (19) is fixedly connected to a concave block (7), the front end of the concave block (7) is fixedly connected to a convex piece (17), the upper surface of the convex piece (17) is provided with a rotating cap (18), the bottom of the rotating cap (18) passes through the upper surface of the convex piece (17) and is rotatably connected to the back side of the meter body (1).

2. A pressure gauge flow channel structure according to claim 1, characterized in that: The outer wall of the rotating cap (18) is rotatably connected to a connecting piece (8), one end of the connecting piece (8) is installed with a hinged head (10), one end of the hinged head (10) is installed with a gear 2 (6), and the top end of the gear 2 (6) is fixedly connected to a cover plate (13).

3. A pressure gauge flow channel structure according to claim 2, characterized in that: An eccentric column (12) is installed at the axial center of the gear 2 (6), and the bottom end of the eccentric column (12) is fixedly connected to the gear 2 (6), so that the gear 2 (6) and the eccentric column (12) are eccentrically connected.

4. A pressure gauge flow channel structure according to claim 1, characterized in that: A flow channel (16) is provided in the inner cavity of the tube seat (11), the flow channel (16) is connected to the interface end of the elastic tube (19), and an elastic cavity (15) is provided inside the elastic tube (19).

5. A pressure gauge flow channel structure according to claim 2, characterized in that: The outer wall of the gear 2 (6) is provided with a cover plate (13), the outer wall of the cover plate (13) is in contact with a tooth column 1 (5), and a tooth opening (4) is installed at the axial center of the tooth column 1 (5).

6. A pressure gauge flow channel structure according to claim 1, characterized in that: The concave block (7) is concave.

7. A pressure gauge flow channel structure according to claim 5, characterized in that: A back plate (9) is provided at the bottom of the tooth opening (4), and the bottom of the tooth opening (4) penetrates the upper part of the tooth column one (5) and is fixedly connected to the back side of the back plate (9).

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