Pressure flowmeter with protection structure

Abstract

The utility model discloses a pressure flow meter with a protection structure, the pressure flow meter with the protection structure comprises a pressure flow meter body, a mounting cylinder, a first mounting plate, two moving plates and a driving mechanism, the pressure flow meter body is provided with a dial plate; the mounting cylinder sleeves the periphery of the dial and one end of the mounting cylinder extends out of the dial; the first mounting plate sleeves one end, extending out of the dial plate, of the mounting cylinder; the two moving plates are attached to one side of the first mounting plate and are oppositely arranged in the first direction, the two moving plates have the degree of freedom of sliding in the first direction so as to jointly block the end, extending out of the dial plate, of the mounting cylinder, and the first direction is parallel to the first mounting plate; the driving mechanism is arranged on the side, away from the moving plates, of the first mounting plate and connected with the two moving plates. According to the pressure flowmeter with the protection structure, the dial plate is protected through the movable plate, and glass on the dial plate is effectively prevented from being impacted and broken.

Description

Technical Field

[0001] This application relates to the field of flow meter technology, and more particularly to a pressure flow meter with a protective structure. Background Technology

[0002] A pressure flow meter, also known as a differential pressure flow meter, is a device used to measure the pressure and flow rate of fluids (such as gas or liquid) flowing in a pipeline.

[0003] Flow meters on the market use pointer-type displays to show flow rate, but the display area is protected by glass to make it easier for users to read the results.

[0004] However, glass is very easy to break when subjected to external impact, which affects the operation of the internal pointer and causes inaccurate readings. In such cases, the flow meter needs to be replaced, which is inconvenient to use. Utility Model Content

[0005] The main purpose of this application is to provide a pressure flow meter with a protective structure, which aims to solve the problem that the glass of the display area of ​​traditional flow meters is easily broken by external impacts.

[0006] To achieve the above objectives, this application provides a pressure flow meter with a protective structure. The pressure flow meter includes a pressure flow meter body, a mounting cylinder, a first mounting plate, two movable plates, and a driving mechanism. The pressure flow meter body has a dial; the mounting cylinder is sleeved around the outer periphery of the dial and extends out of the dial at one end; the first mounting plate is sleeved around the end of the mounting cylinder extending out of the dial; the two movable plates are both fitted against one side of the first mounting plate and are arranged opposite each other in a first direction, each having a degree of freedom to slide along the first direction to jointly block the end of the mounting cylinder extending out of the dial, the first direction being parallel to the first mounting plate; the driving mechanism is located on the side of the first mounting plate opposite to the movable plates and connected to the two movable plates, the driving mechanism providing a driving force for the two movable plates to move in opposite directions.

[0007] Optionally, the first mounting plate has two through slots extending along the first direction, and the two through slots are spaced apart in a second direction, which is perpendicular to the first direction and parallel to the first mounting plate; the pressure flow meter with the protective structure further includes two sliders, which pass through the through slots one-to-one and slide in cooperation with the corresponding through slots, and the two sliders are respectively fixed to a movable plate; wherein, the driving mechanism is connected to the two sliders to provide a driving force for the two sliders to slide in opposite directions.

[0008] Optionally, the driving mechanism includes two racks, a rotating shaft, a gear, a first driving part, and a second driving part. The two racks are fixed to the sliders one-to-one and both extend along the first direction. The rotating shaft is rotatably connected to the first mounting plate and has a degree of freedom to rotate about its own axis. The axis of the rotating shaft is the same as a third direction, which is perpendicular to the first mounting plate. In the second direction, the rotating shaft is located between the two racks. The gear is sleeved on the outer periphery of the rotating shaft and meshes with the two racks. The first driving part connects the rotating shaft and the first mounting plate, and provides a first driving force to the rotating shaft to drive the two moving plates closer to each other. The second driving part is located on the side of the gear away from the first mounting plate, and provides a second driving force to the rotating shaft to drive the two moving plates away from each other.

[0009] Optionally, the first driving part is a torsion spring, which is sleeved on the outer periphery of the rotating shaft and located between the gear and the first mounting plate. The two ends of the torsion spring are respectively connected to the rotating shaft and the first mounting plate.

[0010] Optionally, the second drive unit includes a spool and a pull ring, with the spool sleeved around the outer periphery of the rotating shaft; the pull ring is connected to the end of the cable on the spool.

[0011] Optionally, the two sliders and the two through slots constitute a set of sliding components, and there are two sets of sliding components, which are respectively located on both sides of the mounting cylinder in the second direction.

[0012] Optionally, the two sets of sliding components are arranged side by side in the second direction, and each sliding component is correspondingly provided with a rotating shaft, a gear, and two racks; the pressure flow meter with protective structure also includes a second mounting plate, two pulleys, and multiple positioning posts. The second mounting plate is sleeved on the outer periphery of the mounting cylinder, and the rotating shaft rotates through the second mounting plate; the two pulleys are correspondingly sleeved on the outer periphery of one of the rotating shafts and located on the side of the second mounting plate opposite to the first mounting plate, and the two pulleys are connected by a belt; the multiple positioning posts are fixed on the side of the second mounting plate opposite to the first mounting plate, and the belt passes around the positioning posts to avoid the mounting cylinder.

[0013] Optionally, the pressure flow meter with protective structure further includes a cover plate and a flange. The cover plate is sleeved on the end of the mounting cylinder away from the first mounting plate. The flange is arranged around the outer periphery of the cover plate and the first mounting plate to block the gap between the cover plate and the first mounting plate. The flange has an opening, and the pull ring is located on the outer periphery of the flange.

[0014] Optionally, the pull ring cannot pass through the opening.

[0015] Optionally, the pressure flow meter with protective structure further includes a limiting post, which is fixed to the outer periphery of the baffle and located on the same side of the baffle as the opening, and the axial direction of the limiting post is the same as the second direction.

[0016] This application proposes a pressure flow meter with a protective structure. Two movable plates abut against each other, thereby sealing the end of the mounting cylinder and protecting the dial. When it is necessary to view the data on the dial, the two movable plates are driven away from each other by a drive mechanism, thereby opening the end of the mounting cylinder and exposing the dial. After viewing, the two movable plates are driven closer together by the drive mechanism to abut against each other, thereby sealing the end of the mounting cylinder and protecting the dial, effectively preventing the glass on the dial from being shattered by impact. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of a pressure flow meter with a protective structure proposed in an embodiment of this application;

[0018] Figure 2 for Figure 1 A schematic diagram of the protective structure of the embodiment when the dial is exposed;

[0019] Figure 3 This is a schematic diagram of the structure of the movable plate in an embodiment of this application;

[0020] Figure 4 This is a schematic diagram of the structure of the movable plate with the end of the mounting cylinder open according to an embodiment of this application;

[0021] Figure 5 for Figure 3 Another perspective structural diagram of the embodiment;

[0022] Figure 6 for Figure 5 A structural breakdown diagram of the Chinese embodiment;

[0023] Figure 7 for Figure 6 A schematic diagram showing the structural breakdown of the second mounting plate in the embodiment;

[0024] Figure 8 for Figure 7 Enlarged view of the structure at point A in the middle.

[0025] In the diagram: 1. Pressure flow meter body; 11. Dial; 2. Mounting cylinder; 3. First mounting plate; 31. Through groove; 4. Moving plate; 5. Drive mechanism; 51. Rack; 52. Rotating shaft; 53. Gear; 54. Second drive unit; 541. Spool; 542. Pull ring; 6. Slider; 71. Second mounting plate; 72. Pulley; 73. Positioning post; 81. Cover plate; 82. Edge retainer; 83. Limiting post.

[0026] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0029] In this utility model, unless otherwise explicitly specified and limited, the terms "connection" and "fixation" should be interpreted broadly. For example, "fixation" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0030] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0031] refer to Figures 1 to 8 It should be understood that, Figure 7 and Figure 6 The connections between the various components should be like Figure 5 As compact as in the middle, this is only for illustrative purposes and will Figure 7 and Figure 6 The components are shown disassembled for easier understanding. This application provides a pressure flow meter with a protective structure. The pressure flow meter with a protective structure may include a pressure flow meter body 1, a mounting cylinder 2, a first mounting plate 3, two movable plates 4, and a drive mechanism 5. The pressure flow meter body 1 has a dial 11; the mounting cylinder 2 is sleeved on the outer periphery of the dial 11 and extends out of the dial 11 at one end; the first mounting plate 3 is sleeved on the end of the mounting cylinder 2 that extends out of the dial 11; the two movable plates 4 are both attached to one side of the first mounting plate 3 and are arranged opposite each other in a first direction. The two movable plates 4 have the freedom to slide along the first direction to jointly block the end of the mounting cylinder 2 that extends out of the dial 11. The first direction is parallel to the first mounting plate 3; the drive mechanism 5 is disposed on the side of the first mounting plate 3 away from the movable plates 4 and is connected to the two movable plates 4. The drive mechanism 5 provides the two movable plates 4 with a driving force for opposite movement.

[0032] This application proposes a pressure flow meter with a protective structure. Two movable plates 4 abut against each other, thereby sealing the end of the mounting cylinder 2 and protecting the dial 11. When it is necessary to view the data on the dial 11, the two movable plates 4 are driven away from each other by the driving mechanism 5, thereby opening the end of the mounting cylinder 2 and exposing the dial 11. After viewing, the two movable plates 4 are driven closer together by the driving mechanism 5 to abut against each other, thereby sealing the end of the mounting cylinder 2 and protecting the dial 11, effectively preventing the glass on the dial 11 from being broken by impact.

[0033] Among them, such as Figure 1 As shown, the first direction is the X direction, the second direction is the Y direction, and the third direction is the Z direction.

[0034] Specifically, the end of the mounting cylinder 2 is round, such as... Figure 1 As shown, when the two movable plates 4 come into contact, they respectively block one semicircle at the end of the mounting cylinder 2, as... Figure 2 As shown, when the ends of the two movable plates 4 are opened to the mounting cylinder 2, the dial 11 is completely exposed.

[0035] refer to Figure 8 In an exemplary embodiment, the first mounting plate 3 has two through slots 31 extending along a first direction, the two through slots 31 being spaced apart in a second direction, the second direction being perpendicular to the first direction and parallel to the first mounting plate 3; the pressure flow meter with a protective structure may further include two sliders 6, the two sliders 6 passing through the through slots 31 one-to-one and slidingly engaging with the corresponding through slots 31, the two sliders 6 being fixed to a movable plate 4 respectively; wherein, the driving mechanism 5 is connected to the two sliders 6 to provide the two sliders 6 with a driving force for reverse sliding.

[0036] The slider 6 is slidably engaged with the through groove 31 and fixed to the movable plate 4. Thus, the movable plate 4 can slide in the first direction via the slider 6, causing the two movable plates 4 to abut or separate. In addition, the drive mechanism 5 can simultaneously drive the two movable plates 4 to abut or separate.

[0037] refer to Figure 7 and Figure 8 In an exemplary embodiment, the drive mechanism 5 may include two racks 51, a rotating shaft 52, a gear 53, a first drive unit, and a second drive unit 54. The two racks 51 are fixed to the slider 6 in a one-to-one correspondence and both extend along a first direction. The rotating shaft 52 is rotatably connected to the first mounting plate 3 and has a degree of freedom to rotate about its own axis. The axis of the rotating shaft 52 is the same as the third direction, and the third direction is perpendicular to the first mounting plate 3. In the second direction, the rotating shaft 52 is located between the two racks 51. The gear 53 is sleeved on the outer periphery of the rotating shaft 52 and meshes with the two racks 51. The first drive unit connects the rotating shaft 52 and the first mounting plate 3, and provides a first driving force to the rotating shaft 52 to drive the two moving plates 4 to move closer to each other. The second drive unit 54 is disposed on the side of the gear 53 away from the first mounting plate 3, and provides a second driving force to the rotating shaft 52 to drive the two moving plates 4 to move away from each other.

[0038] Specifically, the rotation of the shaft 52 can drive the gear 53 to rotate synchronously. The gear 53 meshes with two racks 51, and the two racks 51 are fixed to two sliders 6 respectively. When the gear 53 rotates, it will drive the two racks 51 and the two sliders 6 to slide in the opposite direction in the first direction. The two sliders 6 further drive the two moving plates 4 to slide in the opposite direction in the first direction, so that the two moving plates 4 collide or separate.

[0039] In this process, the first driving unit drives the two moving plates 4 to move closer to each other; the second driving unit 54 drives the two moving plates 4 to move further apart. That is, the direction in which the first driving unit drives the rotating shaft 52 to rotate is opposite to the direction in which the second driving unit 54 drives the rotating shaft 52 to rotate. The direction of rotation of the first driving unit driving the rotating shaft 52 is recorded as the reverse direction, and the direction of rotation of the second driving unit 54 driving the rotating shaft 52 is recorded as the forward direction.

[0040] Furthermore, the first driving part is a torsion spring, which is sleeved on the outer periphery of the rotating shaft 52 and located between the gear 53 and the first mounting plate 3. The two ends of the torsion spring are respectively connected to the rotating shaft 52 and the first mounting plate 3. The second driving part 54 may include a spool 541 and a pull ring 542. The spool 541 is sleeved on the outer periphery of the rotating shaft 52; the pull ring 542 is connected to the end of the cable on the spool 541.

[0041] Thus, when it is necessary to observe the dial 11, pulling the pull ring 542 will cause the rotating shaft 52 to rotate in the forward direction through the threaded wheel 541, so that the two moving plates 4 move away from each other. After observation, releasing the pull ring 542 will cause the torsion spring to drive the rotating shaft 52 to rotate in the reverse direction, so that the two moving plates 4 move closer to each other and abut against each other. The operation of observing the dial 11 can be completed simply by pulling and releasing the pull ring 542, which is convenient and quick.

[0042] refer to Figure 7 In an exemplary embodiment, two sliders 6 and two through slots 31 constitute a set of sliding components. There are two sets of sliding components, which are located on both sides of the mounting cylinder 2 in the second direction.

[0043] Among them, such as Figure 7 As shown, two sets of sliding components connect the movable plate 4 and the first mounting plate 3 on both sides of the mounting cylinder 2, making the sliding process of the movable plate 4 more stable.

[0044] refer to Figure 6 and Figure 7 In an exemplary embodiment, two sets of sliding components are arranged side by side in the second direction, and each sliding component is correspondingly provided with a rotating shaft 52, a gear 53, and two racks 51; the pressure flow meter with a protective structure may also include a second mounting plate 71, two pulleys 72, and multiple positioning posts 73. The second mounting plate 71 is sleeved on the outer periphery of the mounting cylinder 2, and the rotating shaft 52 rotates through the second mounting plate 71; the two pulleys 72 are correspondingly sleeved on the outer periphery of a rotating shaft 52 and located on the side of the second mounting plate 71 opposite to the first mounting plate 3, and the two pulleys 72 are connected by a belt; the multiple positioning posts 73 are fixed on the side of the second mounting plate 71 opposite to the first mounting plate 3, and the belt passes around the positioning posts 73 to avoid the mounting cylinder 2.

[0045] Two sets of sliding components are arranged side by side in the second direction. Each sliding component is equipped with a rotating shaft 52, a gear 53 and two racks 51. When the two rotating shafts 52 rotate synchronously in the forward direction, they can drive the two moving plates 4 to move away from each other. When the two rotating shafts 52 rotate synchronously in the reverse direction, they can drive the two moving plates 4 to move closer to each other and come into contact.

[0046] Furthermore, the two rotating shafts 52 are connected by a pulley 72. In this way, the first drive unit or the second drive unit 54 only needs to drive one rotating shaft 52 to rotate, which can drive both rotating shafts 52 to rotate together. Of course, in order to prevent relative friction between the belt and the pulley 72, a synchronous pulley and a synchronous belt can be used for transmission.

[0047] Among them, such as Figure 6 and Figure 7 As shown, there can be four positioning posts 73. The four positioning posts 73 can deflect the movement trajectory of the belt, thereby causing the belt to avoid the mounting cylinder 2.

[0048] refer to Figure 5 and Figure 6 In an exemplary embodiment, the pressure flow meter with a protective structure may further include a cover plate 81 and a flange 82. The cover plate 81 is sleeved on the end of the mounting cylinder 2 away from the first mounting plate 3. The flange 82 is arranged around the outer periphery of the cover plate 81 and the first mounting plate 3 to block the gap between the cover plate 81 and the first mounting plate 3. The flange 82 is provided with an opening, and the pull ring 542 is located on the outer periphery of the flange 82.

[0049] Among them, as shown in the figure and Figure 6 As shown, after adding the cover plate 81 and the retaining edge 82, they can work together with the first mounting plate 3 and the mounting cylinder 2 to enclose and protect most of the components, preventing damage to each part.

[0050] Furthermore, the guard 82 is provided with an opening through which the cable on the reel 541 passes. The pull ring 542 is located on the outer periphery of the guard 82, which makes it easy for the user to pull the pull ring 542 to move the two movable plates 4 away from each other.

[0051] It should be understood that the pull ring 542 cannot pass through the opening, which effectively prevents the pull ring 542 from falling into the opening, or the torsion spring drives the rotating shaft 52 and the reel 541 to rotate, so that the pull ring 542 passes through the opening and enters the inner circumference of the retaining edge 82, ensuring that the user can effectively pull the pull ring 542.

[0052] refer to Figure 4 In an exemplary embodiment, the pressure flow meter with a protective structure may further include a limiting post 83, which is fixed to the outer periphery of the flange 82 and located on the same side of the flange 82 as the opening, and the axial direction of the limiting post 83 is the same as the second direction.

[0053] Specifically, after the user pulls the pull ring 542 and places it on the limiting post 83, the position of the pull ring 542 is fixed, allowing the two movable plates 4 to be separated for a long time, which is convenient for the user to observe. After the observation is completed, the pull ring 542 is separated from the limiting post 83, and the torsion spring can drive the rotating shaft 52 to rotate in the opposite direction, so that the two movable plates 4 approach each other and abut against each other, making it more convenient to use.

[0054] The above are merely preferred embodiments of this application and do not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A pressure flowmeter having a protective structure, characterized by, The utility model relates to a pressure flowmeter with protection structure, comprising: a pressure flowmeter body (1) having a dial plate (11); a mounting cylinder (2) sleeved on the outer periphery of the dial plate (11) and extending out of the dial plate (11) at one end; a first mounting plate (3) sleeved on the end of the mounting cylinder (2) extending out of the dial plate (11); two moving plates (4) each arranged on one side of the first mounting plate (3) and oppositely arranged in a first direction, both of the moving plates (4) having a sliding freedom in the first direction to jointly block the end of the mounting cylinder (2) extending out of the dial plate (11), the first direction being parallel to the first mounting plate (3); a driving mechanism (5) arranged on the side of the first mounting plate (3) away from the moving plates (4) and connected with both of the moving plates (4), the driving mechanism (5) providing a driving force for the opposite movement of both of the moving plates (4).

2. The pressure flow meter with protective structure of claim 1, wherein, The first mounting plate (3) has two through grooves (31) extending in the first direction, both of the through grooves (31) being spaced apart in a second direction, the second direction being perpendicular to the first direction and parallel to the first mounting plate (3); the pressure flowmeter with protection structure further comprises: two sliders (6) each passing through the through groove (31) and slidingly matched with the corresponding through groove (31), both of the sliders (6) being fixed with one of the moving plates (4) respectively; wherein the driving mechanism (5) is connected with both of the sliders (6) to provide a driving force for the opposite sliding of both of the sliders (6).

3. The pressure flow meter with protective structure of claim 2, wherein, The driving mechanism (5) comprises: two racks (51) each fixed with the slider (6) and extending in the first direction; a rotating shaft (52) rotationally connected with the first mounting plate (3) and having a rotating freedom about its own axis, the axis of the rotating shaft (52) being the same as a third direction, the third direction being perpendicular to the first mounting plate (3), wherein in the second direction, the rotating shaft (52) is located between both of the racks (51); a gear (53) sleeved on the outer periphery of the rotating shaft (52) and meshed with both of the racks (51); a first driving part connecting the rotating shaft (52) with the first mounting plate (3), the first driving part providing a first driving force for the rotating shaft (52) to drive both of the moving plates (4) to move towards each other; a second driving part (54) arranged on the side of the gear (53) away from the first mounting plate (3), the second driving part (54) providing a second driving force for the rotating shaft (52) to drive both of the moving plates (4) to move away from each other.

4. The pressure flow meter with protective structure of claim 3, wherein, The first driving part is a torsion spring, the torsion spring being sleeved on the outer periphery of the rotating shaft (52) and located between the gear (53) and the first mounting plate (3), both ends of the torsion spring being connected with the rotating shaft (52) and the first mounting plate (3) respectively.

5. The pressure flow meter with protective structure as claimed in claim 3, wherein, The second driving part (54) comprises: a wire wheel (541) sleeved on the outer periphery of the rotating shaft (52); a pull ring (542) connected with the cable end on the wire wheel (541).

6. The pressure flow meter with protective structure of claim 3, wherein, Two of the sliding blocks (6) and two of the through grooves (31) form a sliding assembly, and there are two sliding assemblies, one on each side of the installation cylinder (2) in the second direction.

7. The pressure flow meter with protective structure of claim 6, wherein, The two sliding assemblies are arranged side by side in the second direction, and each sliding assembly is provided with a rotating shaft (52), a gear (53), and two racks (51); The pressure flow meter with the protection structure further comprises: A second mounting plate (71) is sleeved on the outer periphery of the installation cylinder (2), and the rotating shaft (52) penetrates the second mounting plate (71); Two pulleys (72) are respectively sleeved on the outer periphery of the rotating shaft (52) and located on the side of the second mounting plate (71) away from the first mounting plate (3), and the two pulleys (72) are connected by a belt; A plurality of positioning columns (73) are fixed to the side of the second mounting plate (71) away from the first mounting plate (3), and the belt passes around the positioning columns (73) to avoid the installation cylinder (2).

8. The pressure flow meter with protective structure of claim 5, wherein, The pressure flow meter with the protection structure further comprises: A cover plate (81) is sleeved on the end of the installation cylinder (2) away from the first mounting plate (3); A retaining edge (82) is arranged around the outer periphery of the cover plate (81) and the first mounting plate (3) to block the gap between the cover plate (81) and the first mounting plate (3); The retaining edge (82) is provided with an opening, and the pull ring (542) is located on the outer periphery of the retaining edge (82).

9. The pressure flow meter with protective structure of claim 8, wherein, The pull ring (542) cannot pass through the opening.

10. The pressure flow meter with protective structure of claim 8, wherein, The pressure flow meter with the protection structure further comprises: A limiting column (83) is fixed to the outer periphery of the retaining edge (82) and located on the same side of the opening on the retaining edge (82), and the axis of the limiting column (83) is the same as the second direction.

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