Accurate control device for sampling tube valve of trace oxygen analyzer

Abstract

The utility model provides an accurate control device for a sampling tube valve of a trace oxygen analyzer, which belongs to the technical field of valve control and comprises a motor, a switch fixedly mounted on the side wall of the motor, a connecting component arranged on the outer surface of the motor, and an opening and closing component arranged on the outer surface of the connecting component and matched with the connecting component for use, and the flow measuring assembly is arranged in the inner cavity of the opening and closing assembly and is matched with the opening and closing assembly for use. Through arrangement of the motor and the switch and cooperation of the connecting assembly, the opening and closing assembly and the flow measuring assembly, efficient and accurate air flow control and sampling are achieved, efficient transmission of power output by the motor, stability and adjustability of the connecting assembly and accurate opening and closing control of the opening and closing assembly are guaranteed, and the sampling efficiency is improved. The operation convenience of the system is improved due to the arrangement of the flow measuring assembly and sensitive flow monitoring of the flow measuring assembly, meanwhile, through accurate control of the servo motor, the rotating accuracy of the valve clack is guaranteed, and the automation level of the system is also improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to valve control technical field, concretely relates to a kind of accurate control device of micro oxygen analyzer sampling tube valve. BACKGROUND

[0002] Micro oxygen analyzer sampling tube is the technology developed based on physical and chemical principles, its course from early colorimetry to modern electrochemistry and zirconia sensor technology, constantly progress, now widely used in petrochemical industry, medical health, environmental monitoring, food processing and semiconductor manufacturing etc. field, for accurate measurement and control oxygen concentration, guarantee production safety and product quality.

[0003] In the existing micro oxygen analyzer sampling tube use process, common problem is that valve fails to close in time, this can lead to external air mixing or sample gas leakage, to cause sampling inaccuracy, this condition not only affects the accuracy of measurement result, possibly adversely affect product quality control, production process safety etc., therefore, a kind of micro oxygen analyzer sampling tube valve accurate control device appears. UTILITY MODEL CONTENTS

[0004] The utility model is to provide a kind of micro oxygen analyzer sampling tube valve accurate control device, to solve the problem presented in the above background technology.

[0005] To achieve the above object, the utility model provides the following technical scheme:

[0006] A kind of micro oxygen analyzer sampling tube valve accurate control device, comprising,

[0007] Motor, switch fixedly installed in the side wall of the motor, connecting assembly is arranged on the outer surface of the motor, open-close assembly is arranged on the outer surface of the connecting assembly and is used in cooperation with the connecting assembly, and flow measuring assembly is arranged in the inner cavity of the open-close assembly and is used in cooperation with the open-close assembly.

[0008] As a preferred scheme of the utility model, the connecting assembly includes connecting shaft fixedly installed in the motor output end, and connecting seat is connected in the side wall of the motor by bolt.

[0009] As a preferred scheme of the utility model, the connecting assembly further includes connecting plate fixedly connected on both sides of the connecting seat, and clamping groove is opened in the side wall of the connecting plate.

[0010] As a preferred scheme of the utility model, open-close assembly includes mounting seat connected in the side wall of the connecting seat by bolt, and gate shell is communicated in the bottom of the mounting seat.

[0011] As a preferred scheme of the utility model, the opening and closing assembly further includes a valve disc movably connected to the inner wall of the gate shell, and a connecting head fixedly installed on the outer surface of the valve disc.

[0012] As a preferred scheme of the utility model, the flow measuring assembly includes a flow measuring pipe adaptively installed on the inner wall of the gate shell, and a flow measuring shell communicated at the end of the flow measuring pipe.

[0013] As a preferred scheme of the utility model, the flow measuring assembly further includes a flow measuring shaft installed in the inner cavity of the flow measuring shell through a bearing, and a flow measuring sensor fixedly installed at the end of the flow measuring shaft.

[0014] Compared with the prior art, the utility model has the beneficial effects that: through the setting of the motor and the switch, and the cooperation between the connecting assembly, the opening and closing assembly and the flow measuring assembly, efficient and accurate air flow control and sampling are realized, efficient transmission of motor output power is ensured, stability and adjustability of the connecting assembly are ensured, accurate opening and closing control of the opening and closing assembly is ensured, sensitive flow monitoring of the flow measuring assembly is ensured, operation convenience, stability and sampling precision of the system are improved, through accurate control of the servo motor, the accuracy of valve disc rotation is ensured, so that the sampling efficiency is improved, and the automation level of the system is also improved. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the drawings needed to be used in the embodiment description will be briefly introduced, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained according to these drawings without creative labor. Among them:

[0016] Fig. 1 It is the overall structure schematic diagram of the utility model;

[0017] Fig. 2 It is the connecting assembly and connecting plate connection schematic diagram of the utility model;

[0018] Fig. 3 It is the mounting seat and gate shell connection schematic diagram of the utility model;

[0019] Fig. 4 It is the flow measuring pipe and flow measuring shell connection schematic diagram of the utility model.

[0020] In the figure: 101, motor; 102, switch; 103, connecting assembly; 103a, connecting shaft; 103b, connecting seat; 103c, connecting plate; 103d, clamping groove; 104, opening and closing assembly; 104a, mounting seat; 104b, gate shell; 104c, valve; 104d, connecting head; 105, flow measuring assembly; 105a, flow measuring pipe; 105b, flow measuring shell; 105c, measuring shaft; 105d, flow measuring sensor. DETAILED DESCRIPTION

[0021] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific embodiments of the utility model will be described in detail below with reference to the accompanying drawings of the specification.

[0022] In the following description, many specific details are set forth in order to provide a thorough understanding of the utility model, but the utility model can also be implemented in other ways different from those described herein, and those skilled in the art can make similar generalizations without departing from the connotation of the utility model, therefore the utility model is not limited by the specific embodiments disclosed below.

[0023] Secondly, "one embodiment" or "embodiment" referred to herein means that specific features, structures or characteristics can be included in at least one implementation of the utility model. "In one embodiment" appearing in different places in the specification does not mean the same embodiment, nor is it an independent or alternative embodiment that excludes other embodiments.

[0024] Embodiment

[0025] Reference Figs. 1-4 For the embodiments of the utility model, the embodiment provides a precise control device for a sampling tube valve of a micro-oxygen analyzer, comprising,

[0026] The motor 101, the switch 102 fixedly installed on the side wall of the motor 101, the connecting assembly 103 arranged on the outer surface of the motor 101, the opening and closing assembly 104 arranged on the outer surface of the connecting assembly 103 and used in cooperation with the connecting assembly 103, and the flow measuring assembly 105 arranged in the inner cavity of the opening and closing assembly 104 and used in cooperation with the opening and closing assembly 104.

[0027] The connecting assembly 103 comprises the connecting shaft 103a fixedly installed on the output end of the motor 101, and the connecting seat 103b connected to the side wall of the motor 101 through bolts, and further comprises the connecting plates 103c fixedly connected on both sides of the connecting seat 103b, and the clamping grooves 103d opened on the side wall of the connecting plates 103c.

[0028] Specifically, the connecting seat 103b is arranged to facilitate the installation and disassembly of the motor 101, facilitate the maintenance of the motor 101, simplify the maintenance steps of the device, and improve the service life of the device.

[0029] The opening and closing assembly 104 comprises a mounting seat 104a connected to the side wall of the connecting seat 103b by bolting, and a gate shell 104b communicated at the bottom of the mounting seat 104a. The opening and closing assembly 104 further comprises a valve disc 104c movably connected to the inner wall of the gate shell 104b, and a connecting head 104d fixedly installed on the outer surface of the valve disc 104c.

[0030] Further, the connecting shaft 103a can drive the connecting head 104d to rotate, and the rotation of the connecting head 104d can drive the valve disc 104c to rotate, facilitating the control of the device.

[0031] The flow measurement assembly 105 comprises a flow measurement pipe 105a adaptedly installed in the inner wall of the gate shell 104b, and a flow measurement shell 105b communicated at the end of the flow measurement pipe 105a. The flow measurement assembly 105 further comprises a flow measurement shaft 105c installed in the inner cavity of the flow measurement shell 105b through a bearing, and a flow measurement sensor 105d fixedly installed at the end of the flow measurement shaft 105c.

[0032] It should be noted that the flow measurement sensor 105d is connected to the motor 101 through wires, which can quickly complete the opening and closing of the gate and ensure the accuracy of sampling.

[0033] In use, the switch 102 is used to control the power-on and power-off of the motor 101, the connecting seat 103b is connected to the mounting seat 104a by bolting, and the connecting shaft 103a is clamped to the connector. During sampling, air flows into the gate shell 104b and then into the flow measurement pipe 105a, driving the flow measurement shaft 105c to rotate. The rotation of the flow measurement shaft 105c cooperates with the flow measurement sensor to monitor the flow of air. After reaching the appropriate sampling time, the flow measurement sensor 105d controls the motor 101 to operate, and the motor 101 drives the connecting shaft 103a to rotate, the connecting head 104d drives the connecting head 104d to rotate, and the connecting head 104d drives the valve disc 104c to rotate, closing the gate shell 104b. The motor 101 is a servo motor 101, which can accurately control the angle of rotation of the valve disc 104c.

[0034] In summary, the air flow is accurately and automatically controlled. The switch 102 controls the power-on and power-off of the motor 101, ensuring the convenience and safety of operation. The stable combination of the bolting connecting seat 103b and the mounting seat 104a, and the accurate clamping of the connecting shaft 103a and the connector, ensure the stability and reliability of the entire system. During sampling, air flows through the gate shell 104b into the flow measurement pipe 105a, driving the flow measurement shaft 105c to rotate, and cooperating with the flow measurement sensor to accurately monitor the flow, making the sampling process efficient and accurate. The use of the servo motor 101 realizes the accurate control of the rotation of the valve disc 104c, so that the gate shell 104b can be quickly and accurately closed after reaching the set sampling time, thereby effectively improving the sampling efficiency and the degree of automation of the system.

[0035] It is important to note that the construction and arrangements of the application shown in the various exemplary embodiments are illustrative only. Although only a few embodiments have been described in detail in this disclosure, those skilled in the art who review this disclosure will readily appreciate that many modifications can be made to the embodiments without departing from the novel teachings and advantages of the subject matter described herein (e.g., variations in sizes, dimensions, structures, shapes and proportions of the various elements, values of parameters, mounting arrangements, use of materials, colors, orientations, locations, and the like). For example, the elements shown as integrally formed can be constructed of multiple parts or elements, the position of elements can be reversed or otherwise varied, and the nature or number of elements or positions can be modified or changed. Accordingly, all such modifications are intended to be included within the scope of the present inventive subject matter. The order or sequence of any process or method steps can be varied or re-sequenced without departing from the subject matter described herein. Any "device" or "apparatus" blocks in the claims are intended to mean structures described herein that perform the described function and also means equivalents thereof. Other substitutions, modifications, changes and omissions can be made in the design, operating conditions and arrangement of the exemplary embodiments without departing from the scope of the present inventive subject matter. Accordingly, the present inventive subject matter is not limited to the particular embodiments described and illustrated herein, but extends to equivalents of the claims. It is therefore desired that the present inventive subject matter be interpreted as not being limited only to the particular embodiments described and illustrated herein, but extends to equivalents of the claims.

[0036] Furthermore, in order to provide a concise description of the exemplary embodiments, not all features of an actual implementation can be described (i.e., those related to the

[0037] It is understood that in the development of any actual implementation, as in any engineering or design project, numerous implementation-specific decisions can be made. Such development efforts can inevitably lead to a number of substitutions, modifications, changes and omissions of parts illustrated in the drawings as those skilled in the art will readily understand. Such being the case, it is intended that the present inventive subject matter be limited only by the spirit and scope of the claims.

[0038] It should be noted that the above-mentioned embodiments are only used to illustrate the technical solutions of the present application but not limit the present application, and although the present application is described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or equivalent replaced without departing from the spirit and scope of the present application, and all should be included in the scope of the claims of the present application.

Claims

1. A precision control device for a valve of a sampling tube of a micro- oxygen analyzer, characterized by: The utility model relates to a motor flow measuring device, including, The utility model discloses a motor flow measuring device, including, motor (101), switch (102) fixedly installed on the lateral wall of motor (101), connecting assembly (103) is arranged on the outer surface of motor (101), open-close assembly (104) is arranged on the outer surface of connecting assembly (103) and is used with connecting assembly (103), and flow measuring assembly (105) is arranged in the inner chamber of open-close assembly (104) and is used with open-close assembly (104).

2. The precise control device for the sampling valve of a micro-oxygen analyzer according to claim 1, characterized in that: Connecting assembly (103) includes connecting shaft (103a) fixedly installed on the output end of motor (101), and connecting seat (103b) is connected through bolt on the lateral wall of motor (101).

3. The precise control device for the sampling valve of a micro-oxygen analyzer according to claim 2, characterized in that: Connecting assembly (103) further includes connecting plate (103c) fixedly connected on both sides of connecting seat (103b), and clamping groove (103d) is opened in the lateral wall of connecting plate (103c).

4. The precise control device for the sampling valve of a micro-oxygen analyzer according to claim 3, characterized in that: Open-close assembly (104) includes mounting seat (104a) connected through bolt on the lateral wall of connecting seat (103b), and gate shell (104b) is communicated in the bottom of mounting seat (104a).

5. The precise control device for the sampling valve of a micro-oxygen analyzer according to claim 4, characterized in that: Open-close assembly (104) further includes valve clack (104c) movably connected on the inner wall of gate shell (104b), and connecting head (104d) is fixedly installed on the outer surface of valve clack (104c).

6. The precise control device for a sampling valve of a micro-oxygen analyzer according to claim 5, characterized in that: Flow measuring assembly (105) includes flow measuring pipe (105a) fittingly installed on the inner wall of gate shell (104b), and flow measuring shell (105b) is communicated in the end of flow measuring pipe (105a).

7. The precise control device for a sampling valve of a micro-oxygen analyzer according to claim 6, characterized in that: Flow measuring assembly (105) further includes measuring shaft (105c) installed through bearing in the inner chamber of flow measuring shell (105b), and flow measuring sensor (105d) is fixedly installed on the end of measuring shaft (105c).

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