Single-stage mechanical pressure stabilizer and air gauge

Abstract

The single-stage mechanical pressure stabilizer comprises a shell and a base, a pushing part and a first elastic piece are arranged, a first cavity and a second cavity are separated through the first elastic piece, and an air outlet channel is divided into an air outlet channel to be communicated with the second cavity, so that when air enters an air inlet channel, the first cavity is communicated with the second cavity through the air outlet channel; the first elastic piece is pushed under the action of pressure, so that the volume of the second cavity is changed, part of gas flowing out of the gas outlet pipeline enters the second cavity, the pressure of the gas flowing out of the gas outlet pipeline is stabilized, the number of channels through which the gas flows in the whole process is small, the overall structure is simple, and the requirement for air quality is low; and compared with the traditional secondary voltage stabilizer, the service life is greatly prolonged.

Description

Technical Field

[0001] The present application relates to the field of pneumatic measuring instruments, and in particular to a single-stage mechanical voltage stabilizer and a pneumatic measuring instrument. Background Art

[0002] The pneumatic measuring instrument uses air as the medium and utilizes the change in flow rate when air flows to measure geometric dimensions. It has the characteristics of stable performance, reliable operation, small size and easy operation.

[0003] In a pneumatic measuring instrument, it generally includes two parts, namely the measuring part at the front end and the pressure stabilizing part at the back end. The compressed gas is filtered through a filter, then enters the pressure stabilizing part, and then enters the measuring part after the pressure is stabilized.

[0004] In the related art, the voltage stabilization part generally adopts an input back-pressure type two-stage voltage stabilizer. In order to achieve the voltage stabilization effect, the structure of this type of voltage stabilizer is complex, especially the internal pipes have many bends. When the gas flows through, it needs to pass through multiple bends and small throttle holes, which will place high demands on the cleanliness of the air quality. For gases of slightly poorer quality, the internal throttle holes of the voltage stabilizer will often be blocked by impurities in the air, causing malfunctions. Utility Model Content

[0005] The embodiments of the present application provide a single-stage mechanical regulator and a pneumatic meter to solve the technical problem that the related technology has very high requirements for the cleanliness of air quality, and for gases of slightly lower quality, the internal throttle holes of the regulator are often blocked by impurities in the air, causing malfunctions.

[0006] A single-stage mechanical voltage regulator is provided, comprising:

[0007] A shell, wherein a first cavity and a second cavity are disposed in the shell, a first elastic sheet is disposed in the first cavity to divide the first cavity into a first chamber and a second chamber, an air inlet channel and an air outlet channel are also opened on the shell, the air outlet channel is also communicated with the second chamber, and the air inlet channel is communicated with the second cavity;

[0008] A seat body, wherein a third cavity is disposed in the seat body, a push portion is movably disposed in the third cavity, two ends of the push portion extend to the second chamber and the second cavity respectively, and a through hole is opened on the seat body to connect the third cavity and the air outlet channel;

[0009] When the air intake passage takes in air, the pushing portion moves along the third cavity to push the first elastic sheet.

[0010] In some embodiments, a first spring assembly is provided on a side of the first elastic sheet facing the first chamber;

[0011] The voltage regulator further comprises an adjusting mechanism, which is movably disposed on the housing and extends into the first cavity to resist the first spring assembly.

[0012] In some embodiments, the adjustment mechanism includes a screw and a nut that cooperate with each other, the screw is threadedly connected to the housing, and one end of the screw extends into the first cavity to resist the first spring assembly.

[0013] In some embodiments, a second elastic sheet is provided in the third cavity, the second elastic sheet divides the third cavity into two sub-chambers, the pushing portion passes through the second elastic sheet, and a recess is provided on the side wall of the pushing portion, and the second elastic sheet is stuck in the recess.

[0014] In some embodiments, the pushing portion includes a push rod and a clamping member, the push rod having a step surface facing the first elastic sheet, the step surface being used to support the second elastic sheet, the clamping member being connected to the push rod and being used to fix the second elastic sheet on the step surface.

[0015] In some embodiments, the seat includes a main body and a pressure cover, the main body has a step surface facing the first elastic sheet, the second elastic sheet is placed on the step surface, and the pressure cover is used to press the second elastic sheet on the step surface.

[0016] In some embodiments, a second spring assembly is disposed in the second cavity, one end of the second spring assembly is fixed to the housing, and the other end is used to support the pushing portion.

[0017] In some embodiments, the shell includes a first shell and a second shell, the first elastic sheet is located between the first shell and the second shell, and the first shell and the second shell are connected together by a fastener.

[0018] In some embodiments, one end of the pushing portion toward the first elastic sheet is in an arc transition.

[0019] In a second aspect, a pneumatic measuring instrument is provided, comprising:

[0020] a plurality of distribution chambers, each of which is provided with a glass tube, and

[0021] There are multiple single-stage mechanical regulators as described above, each of which is connected to a corresponding distribution chamber, and the multiple single-stage mechanical regulators are staggered in the vertical direction.

[0022] The beneficial effects of the technical solution provided by this application include:

[0023] The embodiment of the present application provides a single-stage mechanical stabilizer. Due to the provision of a pushing portion and a first elastic sheet, a first chamber and a second chamber are separated by the first elastic sheet, and the outlet channel is connected to the second chamber through a branch outlet channel. Therefore, when air is taken into the air inlet channel, the first elastic sheet will be pushed under the action of pressure, so that the volume of the second chamber changes, so that part of the gas flowing out through the outlet pipe will enter the second chamber to stabilize the air pressure of the gas flowing out of the outlet pipe. During the whole process, the gas flows through fewer channels, and the overall structure is simple, the air quality requirement is low, and the service life is greatly improved compared with the traditional two-stage stabilizer. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0025] Figure 1 A schematic diagram of the structure of a single-stage mechanical regulator provided in an embodiment of the present application;

[0026] Figure 2 for Figure 1 A magnified schematic diagram of the structure at center A;

[0027] Figure 3 A schematic diagram of the structure of a pneumatic measuring instrument provided in an embodiment of the present application;

[0028] Figure 4 A schematic diagram of the structure of the pneumatic measuring instrument provided in an embodiment of the present application.

[0029] In the figure: 1, shell; 1a, first cavity; 1b, second cavity; 11, first shell; 12, second shell; 2, first elastic sheet; 3, first chamber; 4, second chamber; 5, air inlet channel; 6, air outlet channel; 7, seat; 7a, third cavity; 71, main body; 72, pressure cover; 8, push portion; 8a, recessed portion; 81, push rod; 82, clamping member; 9, first spring assembly; 10, adjusting mechanism; 101, screw; 102, nut; 20, second elastic sheet; 30, second spring assembly; 40, distribution chamber; 50, glass tube. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0031] The embodiment of the present application provides a single-stage mechanical regulator and a pneumatic meter, which can solve the technical problem in the related technology that the air quality cleanliness requirement is very high, and for gases of slightly lower quality, the internal throttle holes of the regulator are often blocked by impurities in the air, causing malfunctions.

[0032] In order to solve the above technical problems, a single-stage mechanical regulator is provided, including a shell 1 and a seat 7, wherein a first cavity 1a and a second cavity 1b are arranged in the shell 1, a first elastic sheet 2 is arranged in the first cavity 1a to divide the first cavity 1a into two independent first chambers 3 and second chambers 4, an air inlet channel 5 and an air outlet channel 6 are also opened on the shell 1, the air outlet channel 6 is also connected with the second chamber 4, and the air inlet channel 5 is connected with the second cavity 1b; a third cavity 7a is arranged in the seat 7, a push portion 8 is movably arranged in the third cavity 7a, and two ends of the push portion 8 extend into the second chamber 4 and the second cavity 1b respectively, and a through hole is opened on the seat 7 to connect the third cavity 7a and the air outlet channel 6.

[0033] Combination Figure 1 as well as Figure 2 In the present application, compressed air is introduced through the air inlet passage 5, and the compressed space first enters into the second cavity 1b. Under the action of pressure, the pushing portion 8 moves along the third cavity 7a and pushes the first elastic sheet 2. At this time, the volume of the second chamber 4 becomes larger, and the gas then enters into the air outlet passage 6 through the third cavity 7a. Part of the gas will enter into the second chamber 4 when passing through the air outlet passage 6. Since the volume of the second chamber 4 becomes larger, the air pressure can be balanced, so that the airflow in the air outlet passage 6 reaches a stable state.

[0034] It should be understood that the first elastic sheet 2 of the present application is a metal plate, such as a steel plate or an aluminum plate, which has a certain deformability. Under the pushing action of the pushing part 8, it can be deformed and easily return to its original shape.

[0035] In the present application, since the structure of the present application is simpler than that of the traditional back-pressure two-stage regulator, the throttling hole of the air flow has a larger aperture than the traditional one, so the overall gas quality requirements are low, and the occurrence of blockage can be effectively reduced, thereby greatly improving the service life of the regulator.

[0036] For compressed gases of different pressures, the balanced air pressure of the second chamber 4 is different, so the volume of the second chamber 4 needs to be different. The first elastic sheet 2 has a first spring assembly 9 on the side facing the first chamber 3. In the present application, the first spring assembly 9 includes a spring support plate and a conical spring. The spring support plate is fixed to the first elastic sheet 2 by bolts, and the conical spring is fixed to the spring support plate. A support seat is installed at the end of the conical spring away from the spring support plate.

[0037] The voltage stabilizer further includes an adjusting mechanism 10 , which is movably disposed on the housing 1 and extends into the first cavity 1 a to resist the first spring assembly 9 .

[0038] By moving the adjustment mechanism 10, the adjustment mechanism 10 can be made to press the support seat, thereby adjusting the compression degree of the conical spring. When the compression degree of the conical spring is large, the push portion 8 is difficult to push the first elastic sheet 2, and the balancing pressure capacity of the second chamber 4 is relatively strong. On the contrary, the push portion 8 is easy to push the first elastic sheet 2, and the balancing air pressure capacity is relatively weak.

[0039] In this embodiment, the adjustment mechanism 10 includes a screw rod 101 and a nut 102 that cooperate with each other. The screw rod 101 is threadedly connected to the housing 1 , and one end of the screw rod 101 extends into the first cavity 1 a to resist the first spring assembly 9 .

[0040] The length of the screw rod 101 extending into the first chamber 3 can be adjusted by rotating the screw rod 101 , thereby controlling the compression degree of the conical spring, and the nut 102 is used to lock the screw rod 101 to fix the position of the screw rod 101 .

[0041] By providing the screw rod 101 and the nut 102 , not only is it easy to obtain the raw materials, but it is also more convenient to adjust the compression degree of the conical spring.

[0042] See also Figure 2 Since the pushing portion 8 is in a floating state, it is necessary to ensure that it can be floated and fixed, and it is not easy to deviate when pushing the first elastic sheet 2, resulting in inadequate pushing. Therefore, in this embodiment, a second elastic sheet 20 is provided in the third cavity 7a, and the second elastic sheet 20 divides the third cavity 7a into two sub-chambers. The pushing portion 8 passes through the second elastic sheet 20, and the side wall of the pushing portion 8 is provided with a recessed portion 8a, and the second elastic sheet 20 is stuck in the recessed portion 8a.

[0043] Based on the previous embodiment, the pushing portion 8 includes a push rod 81 and a clamping member 82, the push rod 81 has a step surface facing the first elastic sheet 2, the step surface is used to support the second elastic sheet 20, the clamping member 82 is connected to the push rod 81, and is used to fix the second elastic sheet 20 on the step surface.

[0044] like Figure 2 As shown, the two sub-chambers are transitioned through a step surface, and the second elastic sheet 20 covers the step surface, and the edge is in contact with the seat body 7 to prevent displacement. In order to facilitate the installation of the second elastic sheet 20 and to play a supporting role, in this example, the elastic sheet 20 is locked by a clamping member 82. In one embodiment, the clamping member 82 can be a nut, and an external thread is provided on the push rod 81. The second elastic sheet 20 is fixed on the step surface of the push rod 81 through the thread cooperation between the nut and the external thread, and at the same time, the second elastic sheet 20 is also in contact with the step surface between the two sub-chambers.

[0045] See also Figure 2 In order to further ensure that the push rod 81 does not shake when rising and to ensure a certain air tightness, the seat body 7 in the present application includes a main body 71 and a pressure cover 72, the main body 71 has a step surface facing the first elastic sheet 2, the second elastic sheet 20 is placed on the step surface, and the pressure cover 72 is used to press the second elastic sheet 20 on the step surface.

[0046] It can be understood that a hole is also formed on the pressure cover 72 for the push rod 81 to pass through. The edge of the pressure cover 72 fits closely to the side wall of the sub-chamber of the first elastic sheet 2. In this way, when the push rod 81 is pushing, it is necessary to simultaneously drive the second elastic sheet 20 and the pressure cover 72 to move upward. Since the edges of the first elastic sheet 2 and the pressure cover 72 both fit closely to the side wall of the sub-chamber of the first elastic sheet 2, and bolts are provided on the pressure cover 72, the pressure cover 72, the second elastic sheet 20 and the main body 71 are connected by bolts. This ensures that the pushing portion 8 will not be offset during pushing and is in a stable state.

[0047] Combination Figure 1 as well as Figure 2 Since the gravity of the entire pushing portion 8 is borne by the second elastic sheet 20, it is easy to cause deformation and wear. Therefore, in this embodiment, a second spring assembly 30 is arranged in the second cavity 1b, one end of the second spring assembly 30 is fixed to the shell 1, and the other end is used to support the pushing portion 8. The second spring assembly 30 includes a mounting seat and a spring connected to each other. The connection method is the existing technology, so it is not introduced here. Through the auxiliary support of the spring, part of the weight of the pushing portion 8 can be borne by the spring, reducing the loss of the second elastic sheet 20.

[0048] See also Figure 1The shell 1 includes a first shell 11 and a second shell 12, the first elastic sheet 2 is located between the first shell 11 and the second shell 12, and the first shell 11 and the second shell 12 are connected together by fasteners.

[0049] After long-term use, both the spring and the first elastic sheet 2 need to be replaced regularly. Therefore, in this embodiment, the shell 1 is divided into a first shell 11 and a second shell 12. The two shells are connected by bolts, and the bolts pass through the first elastic sheet 2 to facilitate fixing the first elastic sheet 2.

[0050] Specifically, one end of the pushing portion 8 toward the first elastic sheet 2 is an arc transition, and the first elastic sheet 2 may also be provided with a corresponding V-shaped groove or an arc groove in cross section, which can play a certain positioning role, and on the other hand, the contact surface is an arc surface, which can also avoid stress concentration and reduce the loss of the first elastic sheet 2 to a certain extent.

[0051] The present application also provides a pneumatic measuring instrument, including:

[0052] a plurality of distribution chambers 40, each of which is provided with a glass tube 50, and

[0053] There are multiple single-stage mechanical regulators as described above, each of which is connected to a corresponding distribution chamber 40, and the multiple single-stage mechanical regulators are staggered in the vertical direction.

[0054] The measurement part of the pneumatic meter is a prior art, so it is not explained here many times. The present application sets a plurality of single-stage mechanical regulators, and the scales corresponding to different buoys at different positions of the glass tube 50 can ensure the authenticity of the data. Relatively speaking, the deviation is greatly reduced, and since the plurality of single-stage mechanical regulators are staggered vertically, such as Figure 3 The distribution of two on top and three on bottom can improve the utilization of space.

[0055] Since the pneumatic measuring instrument in the present application includes a single-stage mechanical voltage stabilizer, the stability is greatly improved and the service life is greatly increased.

[0056] In the description of the present application, it should be noted that the terms "upper", "lower", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0057] It should be noted that, in this application, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0058] The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.

Claims

1. A single-stage mechanical voltage regulator, characterized in that: include: A shell (1), wherein a first cavity (1a) and a second cavity (1b) are arranged in the shell (1), a first elastic sheet (2) is arranged in the first cavity (1a) to divide the first cavity (1a) into a first chamber (3) and a second chamber (4), an air inlet channel (5) and an air outlet channel (6) are also provided on the shell (1), the air outlet channel (6) is also connected to the second chamber (4), and the air inlet channel (5) is connected to the second cavity (1b); A seat body (7), wherein a third cavity (7a) is arranged in the seat body (7), a push portion (8) is movably arranged in the third cavity (7a), two ends of the push portion (8) respectively extend into the second chamber (4) and the second cavity (1b), and a through hole is opened on the seat body (7) to connect the third cavity (7a) and the air outlet channel (6); When air is taken in through the air intake passage (5), the pushing portion (8) moves along the third cavity (7a) to push the first elastic sheet (2).

2. The single-stage mechanical regulator according to claim 1, characterized in that: A first spring assembly (9) is provided on the side of the first elastic sheet (2) facing the first chamber (3); The voltage stabilizer further comprises an adjusting mechanism (10), wherein the adjusting mechanism (10) is movably arranged on the housing (1) and extends into the first cavity (1a) to resist the first spring assembly (9).

3. The single-stage mechanical regulator according to claim 2, characterized in that: The adjustment mechanism (10) comprises a screw rod (101) and a nut (102) that cooperate with each other, the screw rod (101) being threadedly connected to the housing (1), and one end of the screw rod (101) extending into the first cavity (1a) to resist the first spring assembly (9).

4. The single-stage mechanical regulator according to claim 1, wherein: A second elastic sheet (20) is arranged in the third cavity (7a), and the second elastic sheet (20) divides the third cavity (7a) into two sub-chambers. The pushing portion (8) passes through the second elastic sheet (20), and a recessed portion (8a) is arranged on the side wall of the pushing portion (8), and the second elastic sheet (20) is stuck in the recessed portion (8a).

5. The single-stage mechanical regulator according to claim 4, characterized in that: The pushing portion (8) comprises a push rod (81) and a clamping member (82), wherein the push rod (81) has a step surface facing the first elastic sheet (2), and the step surface is used to support the second elastic sheet (20), and the clamping member (82) is connected to the push rod (81) and is used to fix the second elastic sheet (20) on the step surface.

6. The single-stage mechanical regulator according to claim 4, characterized in that: The seat body (7) comprises a main body (71) and a pressure cover (72), wherein the main body (71) has a step surface facing the first elastic sheet (2), the second elastic sheet (20) is placed on the step surface, and the pressure cover (72) is used to press the second elastic sheet (20) onto the step surface.

7. The single-stage mechanical regulator according to claim 1, wherein: A second spring assembly (30) is arranged in the second cavity (1b); one end of the second spring assembly (30) is fixed to the housing (1), and the other end is used to support the pushing portion (8).

8. The single-stage mechanical regulator according to claim 1, wherein: The shell (1) comprises a first shell (11) and a second shell (12); the first elastic sheet (2) is located between the first shell (11) and the second shell (12); the first shell (11) and the second shell (12) are connected together by a fastener.

9. The single-stage mechanical regulator according to claim 1, wherein: One end of the pushing portion (8) facing the first elastic sheet (2) is in an arc transition.

10. A pneumatic measuring instrument, characterized in that: include: a plurality of distribution chambers (40), each of which is provided with a glass tube (50); and A plurality of single-stage mechanical regulators as claimed in any one of claims 1 to 9, each of the single-stage mechanical regulators is connected to a corresponding distribution chamber (40), and the plurality of single-stage mechanical regulators are staggered in the vertical direction.

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