Protection mechanism and mechanical differential pressure gauge

Abstract

The utility model relates to the technical field of differential pressure gauges, in particular to a protection mechanism and a mechanical differential pressure gauge, and the protection mechanism comprises a guide part which comprises a fixed part, a support rod arranged in the fixed part, and first nuts arranged at the two ends of the support rod; the adjusting part comprises a supporting assembly arranged in the fixing part, a telescopic assembly arranged above the supporting assembly and a moving assembly arranged on one side of the supporting assembly, the supporting assembly supports an object through the design of the supporting assembly, the object is fixed through the design of the telescopic assembly, and the distance of the object is adjusted; through the design of the moving assembly, a plurality of objects are adjusted at equal intervals, and through the cooperation of the moving assembly and the telescopic assembly, the distance in a single object does not change in the adjusting process.

Description

Technical Field

[0001] The utility model relates to the technical field of differential pressure gauges, in particular to a protection mechanism and a mechanical differential pressure gauge. Background Art

[0002] A differential pressure gauge is a measuring device used to measure the pressure difference between two different points. Existing differential pressure gauges, especially micro differential pressure gauges, basically use electronic differential pressure gauges, which belong to the category of instruments.

[0003] When the electronic differential pressure gauge cannot be used, it is necessary to measure the pressure difference through a mechanical structure. During the use of the mechanical differential pressure gauge, the measured pressure difference may be unstable due to external environmental factors. For example, the influence of external wind will blow the moving plate, and the movement of the moving plate will cause the pressure in the bellows to change. Summary of the Utility Model

[0004] The purpose of this part is to outline some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Simplifications or omissions may be made in this part, as well as in the abstract and title of the application, to avoid obscuring the purpose of this part, the abstract, and the title. However, such simplifications or omissions shall not be used to limit the scope of the utility model.

[0005] In view of the problem of unstable measurement of the pressure difference in the above or existing technologies, the present utility model is proposed.

[0006] Therefore, the purpose of the present utility model is to provide a protection mechanism.

[0007] To solve the above technical problems, the present utility model provides the following technical solutions: including a guiding component, which includes a fixing member, a support rod arranged inside the fixing member, and a first nut arranged at both ends of the support rod; an adjusting component, which includes a support assembly arranged inside the fixing member, a telescopic assembly arranged above the support assembly, and a moving assembly arranged on one side of the support assembly.

[0008] As a preferred solution of the protection mechanism of the present utility model, wherein: the fixing member includes a support plate, a floor foot arranged below the support plate, and a second nut arranged above the support plate.

[0009] As a preferred solution of the protection mechanism of the present utility model, wherein: the support assembly includes a support plate arranged between the support plates, a connecting column arranged above the support plate, and a semi-circular ring arranged above the connecting column.

[0010] As a preferred embodiment of the protection mechanism of the present utility model, the telescopic assembly includes a connecting plate disposed above the semi-circular ring, a telescopic rod disposed on one side of the connecting plate, a clamping plate disposed at one end of the telescopic rod, and a bolt disposed at one end of the telescopic rod; wherein, the bolt is threadedly connected to the connecting plate.

[0011] As a preferred embodiment of the protection mechanism of the present utility model, the moving assembly includes a slide rail disposed above the support plate, a sliding plate disposed on one side of the connecting column, a slider disposed below the sliding plate, and a bidirectional screw disposed inside the slide rail; wherein, the slider is slidably disposed inside the slide rail.

[0012] The beneficial effects of the protection mechanism of the present utility model are as follows: The support component supports the object through its design, the telescopic component fixes the object and adjusts the distance through its design, the moving component performs equidistant adjustment on multiple objects through its design, and through the cooperation of the moving component and the telescopic component, the distance between individual objects does not change during the adjustment process.

[0013] In view of the problem that in the actual use process, when the electronic differential pressure gauge cannot be used, the differential pressure cannot be measured, a mechanical differential pressure gauge is proposed.

[0014] To solve the above technical problems, the present utility model also provides the following technical solution: It further includes a pressure measuring component, which includes a gas storage component disposed on one side of the support plate, an air inlet component disposed on one side of the gas storage component, and a sliding component disposed inside the gas storage component.

[0015] As a preferred embodiment of the mechanical differential pressure gauge of the present utility model, the gas storage component includes a fixed plate disposed outside the support rod, an outer bellows disposed on one side of the fixed plate, an inner bellows disposed inside the outer bellows, and a moving plate disposed on one side of the outer bellows; wherein, the moving plate cooperates with the clamping plate.

[0016] As a preferred embodiment of the mechanical differential pressure gauge of the present utility model, the air inlet component includes an air inlet disposed on one side of the moving plate, and a pressure tube disposed on one side of the air inlet.

[0017] As a preferred embodiment of the mechanical differential pressure gauge of the present utility model, the sliding component includes a sliding sleeve disposed on one side of the moving plate, and a core rod disposed inside the sliding sleeve; wherein, the core rod penetrates through the fixed plate, the moving plate, and the inner bellows respectively.

[0018] As a preferred embodiment of the mechanical differential pressure gauge of the present utility model, a check valve is provided at one end of the pressure tube.

[0019] Advantages of the mechanical differential pressure gauge of the present utility model: Through the cooperation of the fixed plate, the moving plate, the outer corrugated pipe and the inner corrugated pipe, a sealed gas storage chamber is formed. Then, through the cooperation of the air inlet assembly, gas enters the gas storage chamber. Furthermore, through the design of the sliding assembly, when the sliding assembly is in a balanced state, the differential pressure can be measured by calculation. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings. Among them:

[0021] Figure 1 It is a schematic diagram of the overall structure of the protection mechanism of the present utility model.

[0022] Figure 2 It is a schematic diagram of a partial structure of the protection mechanism of the present utility model.

[0023] Figure 3 It is a schematic cross-sectional view of the telescopic assembly structure of the protection mechanism of the present utility model.

[0024] Figure 4 It is a schematic diagram of the structure of Embodiment 2 of the present utility model.

[0025] Figure 5 It is a schematic diagram of the structure of Embodiment 3 of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] To make the above objects, features, and advantages of the present utility model more obvious and understandable, the following will provide a detailed description of the specific embodiments of the present utility model with reference to the accompanying drawings of the specification.

[0027] Many specific details are set forth in the following description to facilitate a thorough understanding of the present utility model. However, the present utility model can also be implemented in other ways different from those described herein. Those skilled in the art can make similar generalizations without departing from the spirit of the present utility model. Therefore, the present utility model is not limited by the specific embodiments disclosed below.

[0028] Secondly, the so-called "one embodiment" or "embodiment" herein refers to a specific feature, structure, or characteristic that can be included in at least one implementation of the present utility model. The appearances of "in one embodiment" in different places in this specification do not all refer to the same embodiment, nor are they separate or alternative embodiments that exclude each other with other embodiments.

[0029] Embodiment 1

[0030] Refer toFigures 1 - 3 , which is the first embodiment of the present utility model. This embodiment provides a protection mechanism, including a guiding component 100, which includes a fixing member 101, a support rod 102 disposed inside the fixing member 101, and a first nut 103 disposed at both ends of the support rod 102; an adjusting component 200, which includes a support assembly 201 disposed inside the fixing member 101, a telescopic assembly 202 disposed above the support assembly 201, and a moving assembly 203 disposed on one side of the support assembly 201.

[0031] The positions of the three support rods 102 are fixed by the fixing member 101, and the fixing member 101 is locked by the first nut 103. The support assembly 201 is fixedly connected to the telescopic assembly 202, the support assembly 201 is fixedly connected to the moving assembly 203, and the moving assembly 203 is slidably connected to the fixing assembly. Through the design of the support assembly 201, the support assembly 201 supports an object. Through the design of the telescopic assembly 202, the object is fixed and the distance is adjusted. Through the design of the moving assembly 203, equidistant adjustment is performed on multiple objects among them. Through the cooperation of the moving assembly 203 and the telescopic assembly 202, the distance in a single object does not change during the adjustment process.

[0032] Further, the fixing member 101 includes a support plate 101c, a floor anchor 101a disposed below the support plate 101c, and a second nut 101b disposed above the support plate 101c. There are two support plates 101c, which are respectively fixed at both ends of the support rod 102. The two support plates 101c are respectively fixedly connected to the two floor anchors 101a. The second nut 101b is threadedly connected to the floor anchor 101a. The support plate 101c is fixed to the ground through the floor anchor 101a and locked by the second nut 101b.

[0033] Further, the support assembly 201 includes a support plate 201a disposed between the support plates 101c, a connecting column 201b disposed above the support plate 201a, and a semi-circular ring 201c disposed above the connecting column 201b. The support plate 201a is fixedly connected to the support plates 101c on both sides. The connecting column 201b is slidably disposed above the support plate 201a. The semi-circular ring 201c is fixedly connected to the connecting column 201b. A positioning pin is disposed on the outer side of the semi-circular ring 201c. The semi-circular ring 201c is fixedly connected to an object placed between the semi-circular rings 201c through the positioning pin. When the semi-circular ring 201c moves, the clamped object is driven to move, thereby driving the entire telescopic assembly 202 to move.

[0034] Further, the telescopic component 202 includes a connecting plate 202a disposed above the semi-circular ring 201c, a telescopic rod 202b disposed on one side of the connecting plate 202a, a clamping plate 202c disposed at one end of the telescopic rod 202b, and a bolt 202d disposed at one end of the telescopic rod 202b; wherein, the bolt 202d is threadedly connected to the connecting plate 202a, the connecting plate 202a is fixedly connected to the semi-circular ring 201c, the telescopic rod 202b is slidably connected to the connecting plate 202a, the clamping plate 202c is fixedly connected to the telescopic rod 202b, and through the cooperation of the bolt 202d and the connecting plate 202a, the telescopic rod 202b is locked and fastened and will not change due to external factors, and an anti-slip knob is provided at one end of the bolt 202d to prevent slipping when rotating.

[0035] Further, the moving component 203 includes a slide rail 203a disposed above the support plate 201a, a sliding plate 203b disposed on one side of the connecting column 201b, a slider 203c disposed below the sliding plate 203b, and a bidirectional screw 203d disposed inside the slide rail 203a; wherein, the slider 203c is slidably disposed inside the slide rail 203a, the slide rail 203a is opened on the upper surface of the support plate 201a, both ends of the bidirectional screw 203d are fixedly connected to both ends of the slide rail 203a, the slider 203c is slidably disposed inside the slide rail 203a and is threadedly connected to the bidirectional screw 203d, and a plurality of sliders 203c are provided, and the threads inside the sliders 203c are matched with the threads of the bidirectional screw 203d, so as to realize the opposite or away movement of the two end sliders 203c.

[0036] Operation process: When it is necessary to fix an object, first fix the object through the positioning pin on the semi-circular ring 201c. When it is necessary to increase the number of objects, rotate the bidirectional screw 203d, thereby driving the sliders 203c on the bidirectional screw 203d to move away from each other, thereby driving a plurality of sliding plates 203b to slide away from each other on the upper surface of the support plate 201a. When it is necessary to adjust the internal distance of the object, rotate the bolt 202d to drive the telescopic rod 202b to slide inside the connecting plate 202a. Rotating the bolt 202d forward causes the telescopic rod 202b to slide out of the connecting plate 202a, and rotating the bolt 202d in reverse causes the telescopic rod 202b to slide into the connecting plate 202a. When the required clamping plate 202c moves to the position, due to the self-locking of the bolt 202d, the fixing effect can be achieved.

[0037] Embodiment 2

[0038] Refer to Figure 4, which is the second embodiment of the present utility model. Different from the previous embodiment, this embodiment provides a mechanical differential pressure gauge; it further includes a pressure measuring component 300, which includes an air storage component 301 provided on one side of the support plate 101c, an air inlet component 302 provided on one side of the air storage component 301, and a sliding component 303 provided inside the air storage component 301;

[0039] There are five air pressure pipes 302b, which are respectively labeled as X 1 , X 2 .... X 5 , and the five air pressure pipes 302b respectively receive the external air pressure labeled as P 1 , P 2 ...... P 5 , assuming that the effective area of the closed area of the fixed plate 301a is S, since S is constant,

[0040] then the core rod 303a is pushed to the right by X 1 , X 2 , X 3 , X 4 The force (F 总R ) is:

[0041] F 总R = F 1 + F 2 + F 3 + F 4 = (P 1 + P 2 + P 3 + P 4 ) * S

[0042] And the core rod 303a is pushed to the left by X 5 The force (F 总L ) is:

[0043] F 总L = F 5 = P 5 * S

[0044] Then the last moving plate is labeled as X Y , and the external force received is labeled as F Y ;

[0045] F 总R = F 总L + F Y , only at this time can the core rod 303a be stationary and balanced on the sliding sleeve 303b. As long as the two sides of the equation are not equal, the core rod 303a will keep sliding until it reaches equilibrium.

[0046] Then

[0047] F Y = PY *S = F 总R -F 总L = (P 1 + P 2 + P 3 + P 4 ) * S - P 5 * S

[0048] Canceling out S gives

[0049] P Y = P 1 + P 2 + P 3 + P 4 - P 5

[0050] Then the trachea Y is connected to a pressure gauge to read the differential pressure.

[0051] Specifically, the air storage assembly 301 includes a fixed plate 301a provided on the outside of the support rod 102, an outer bellows 301c provided on one side of the fixed plate 301a, an inner bellows 301d provided inside the outer bellows 301c, and a moving plate 301b provided on one side of the outer bellows 301c; among them, the moving plate 301b cooperates with the clamping plate 202c, and the four-piece set is a combination. The fixed plate 301a is fixed to the support rod 102 and is empty of the core rod 303a. Conversely, the moving plate 301b is empty of the support rod 102 and is fixed to the core rod 303a. The outside and inside of the bellows are respectively fixed to the fixed plate 301a and the moving plate 301b to form an annular closed space for inflating. All the forces on several moving plates 301b will be transmitted to the common stressed object - the core rod 303a.

[0052] Furthermore, the air intake assembly 302 includes an air intake port 302a provided on one side of the moving plate 301b, and an air pressure tube 302b provided on one side of the air intake port 302a.

[0053] Furthermore, the sliding assembly 303 includes a sliding sleeve 303b provided on one side of the moving plate 301b, and a core rod 303a provided inside the sliding sleeve 303b; among them, the core rod 303a passes through the fixed plate 301a, the moving plate 301b and the inner bellows 301d respectively. The core rod 303a and the sliding sleeve 303b are a set. The core rod 303a can axially move with the sliding sleeve 303b. Generally, the smoothness of the core rod 303a ground on the grinding machine is extremely high, and the sliding sleeve 303b is made of polytetrafluoroethylene, so that the friction between the two is almost zero.

[0054] The remaining structure is the same as that of Embodiment 1.

[0055] Embodiment 3

[0056] Refer to Figure 5, which is the third embodiment of the present utility model. Different from the previous embodiment, a check valve 400 is provided at one end of the pneumatic tube 302b. The design of the check valve 400 is to prevent gas backflow and make the inside of the bellows unstable.

[0057] All other structures are the same as those in Embodiment 1 or 2.

[0058] Importantly, it should be noted that the construction and arrangement of the present application shown in multiple different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who refer to this disclosure should easily understand that many modifications are possible without substantially departing from the novel teachings and advantages of the subject matter described in this application (for example, the dimensions, scales, structures, shapes and proportions of various components, and parameter values (such as temperature, pressure, etc.), installation arrangements, use of materials, color, orientation changes, etc.). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of the element may be inverted or otherwise changed, and the nature, number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of the present utility model. The order or sequence of any process or method steps may be changed or reordered according to alternative embodiments. In the claims, any "means-plus-function" clause is intended to cover the structure that performs the recited function described herein, and not only structural equivalents but also equivalent structures. Other substitutions, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments without departing from the scope of the present utility model. Therefore, the present utility model is not limited to a specific embodiment, but extends to various modifications that still fall within the scope of the appended claims.

[0059] In addition, in order to provide a concise description of the exemplary embodiments, not all features of the actual embodiments may be described (i.e., those features that are not relevant to the currently considered best mode of implementing the present utility model, or those features that are not relevant to implementing the present utility model).

[0060] It should be understood that in the development of any actual implementation, such as in any engineering or design project, a large number of specific implementation decisions may be made. Such development efforts may be complex and time-consuming, but for those of ordinary skill in the art who benefit from this disclosure, without excessive experimentation, such development efforts will be a routine task of design, manufacturing and production.

[0061] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered by the scope of the claims of the present invention.

Claims

1. A protection mechanism, characterized in that: include: A guide component (100), comprising a fixing member (101), a support rod (102) arranged inside the fixing member (101), and nuts (103) arranged at both ends of the support rod (102); The adjusting component (200) comprises a supporting component (201) arranged inside the fixing member (101), a telescopic component (202) arranged above the supporting component (201), and a moving component (203) arranged on one side of the supporting component (201).

2. The protection mechanism according to claim 1, characterized in that: The fixing member (101) comprises a support plate (101c), a foot (101a) arranged below the support plate (101c), and a nut 2 (101b) arranged above the support plate (101c).

3. The protection mechanism according to claim 2, characterized in that: The support assembly (201) comprises a support plate (201a) arranged between the support plates (101c), a connecting column (201b) arranged above the support plate (201a), and a semicircular ring (201c) arranged above the connecting column (201b).

4. The protection mechanism according to claim 3, characterized in that: The telescopic assembly (202) comprises a connecting plate (202a) arranged above the semicircular ring (201c), a telescopic rod (202b) arranged on one side of the connecting plate (202a), a clamping plate (202c) arranged at one end of the telescopic rod (202b), and a bolt (202d) arranged at one end of the telescopic rod (202b); Wherein, the bolt (202d) is threadedly connected to the connecting plate (202a).

5. The protection mechanism according to claim 4, characterized in that: The moving assembly (203) comprises a slide rail (203a) arranged above the support plate (201a), a slide plate (203b) arranged on one side of the connecting column (201b), a slider (203c) arranged below the slide plate (203b), and a bidirectional screw (203d) arranged inside the slide rail (203a); Wherein, the sliding block (203c) is slidably arranged inside the sliding rail (203a).

6. A mechanical differential pressure gauge, characterized in that: It includes the protection mechanism as described in claim 5, and also includes a pressure measuring component (300), which includes an air storage component (301) arranged on one side of the support plate (101c), an air intake component (302) arranged on one side of the air storage component (301), and a sliding component (303) arranged inside the air storage component (301).

7. The mechanical differential pressure gauge according to claim 6, characterized in that: The gas storage assembly (301) comprises a fixed plate (301a) arranged outside the support rod (102), an outer bellows (301c) arranged on one side of the fixed plate (301a), an inner bellows (301d) arranged inside the outer bellows (301c), and a movable plate (301b) arranged on one side of the outer bellows (301c); Wherein, the movable plate (301b) cooperates with the clamping plate (202c).

8. The mechanical differential pressure gauge according to claim 7, characterized in that: The air intake assembly (302) comprises an air intake port (302a) arranged on one side of the moving plate (301b), and an air pressure pipe (302b) arranged on one side of the air intake port (302a).

9. The mechanical differential pressure gauge according to claim 8, characterized in that: The sliding assembly (303) comprises a sliding sleeve (303b) arranged on one side of the moving plate (301b), and a core rod (303a) arranged inside the sliding sleeve (303b); Wherein, the core rod (303a) passes through the fixed plate (301a), the movable plate (301b) and the inner bellows (301d) respectively.

10. The mechanical differential pressure gauge according to claim 9, characterized in that: A one-way valve (400) is provided at one end of the air pressure tube (302b).

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