Gas mass flow controller capable of avoiding leakage

Abstract

The utility model relates to the technical field of gas mass flow controllers, and discloses a gas mass flow controller capable of avoiding leakage, which comprises a sealing box and a sensor fixedly mounted on the side wall of an inner cavity of the sealing box, and a control module is fixedly mounted on the rear side of the inner cavity of the sealing box close to the top. An alarm is arranged at the top of the sealing box close to one side, an electromagnetic valve is arranged at the position, close to the bottom, of an inner cavity of the sealing box, a sealing door is movably installed on the front side of the sealing box, and a support is fixedly installed at the position, close to the other side, of the bottom of the inner cavity of the sealing box. And under the cooperative use of a threaded rod, a threaded sleeve, a limiting block and a limiting rod, an L-shaped insertion block can move towards the far side and is inserted into an inner cavity of an adjacent insertion groove, so that the controller body is convenient to install, meanwhile, the controller body is convenient to disassemble and maintain subsequently, and the use effect of the device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of gas mass flow controllers, in particular to a gas mass flow controller which can avoid leakage. Background Art

[0002] The gas mass flow controller is a device that controls the gas mass flow rate. The gas mass flow controller is based on the Coriolis force. There are two parallel T-shaped vibrating tubes inside, a driving coil is installed in the middle, and pickup coils are installed at both ends. When the excitation voltage provided by the transmitter is added to the driving coil, the vibrating tube vibrates reciprocatingly. The fluid medium of the industrial process flows through the vibrating tube of the sensor, which will produce a Coriolis force effect on the vibrating tube, causing the two vibrating tubes to torsionally vibrate. The pickup coils installed at both ends of the vibrating tube will generate two sets of signals with different phases. The difference between the two signals is proportional to the mass flow rate of the fluid flowing through the sensor, thereby being able to control the mass and flow rate of the gas flowing through.

[0003] For example, a gas mass flow controller for avoiding leakage with publication number CN115929965A includes a shell, one side inner wall of the shell is connected with a controller body by bolts, one side of the controller body is provided with a connecting pipe fixed inside the shell, the connecting pipe is connected to the air inlet of the controller body by a pipeline, the inside of the connecting pipe is provided with a ball cavity, the inside of the air cavity is provided with a valve ball, the inside of the valve ball is provided with a through hole, the top of the connecting pipe is fixed with a mounting shell, and the inner walls on both sides of the mounting shell are connected with a worm by bearings. The present invention monitors dangerous gases through sensors, so that when dangerous gases leak inside the controller body, the motor can be controlled to work through the control module, so that the valve ball cuts off the dangerous gases to prevent the dangerous gases from continuing to leak.

[0004] The above patent uses bolts to install the controller body and the side wall of the shell cavity. However, when the controller body needs to be disassembled and maintained, multiple bolts need to be removed, which is not conducive to the subsequent rapid disassembly of the controller body and reduces the use effect of the device.

[0005] Therefore, we propose a gas mass flow controller that avoids leakage in order to solve the above problems. Utility Model Content

[0006] The utility model aims to provide a gas mass flow controller which can avoid leakage, so as to solve the problems raised by the above-mentioned background technology.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a gas mass flow controller for avoiding leakage, comprising a sealed box and a sensor fixedly installed on the side wall of the inner cavity of the sealed box, a control module fixedly installed near the top of the inner cavity of the sealed box at the rear side, an alarm device is provided near one side of the top of the sealed box, a solenoid valve is provided near the bottom of the inner cavity of the sealed box, a sealed door is movably installed on the front side of the sealed box, a support is fixedly installed near the other side of the bottom of the inner cavity of the sealed box, a mounting assembly is provided in the inner cavity of the support, an adjustment assembly is provided on the mounting assembly, and a controller body is provided on the top of the support;

[0008] The mounting assembly includes a worm movably penetrating the front side of the inner cavity of the support and a worm wheel meshing at the bottom of the worm, a threaded rod penetrates the center of one side of the worm wheel, both ends of the threaded rod are rotatably connected to the inner cavity side wall of the support respectively, a threaded sleeve is threadedly connected near the middle position of the outer periphery of the threaded rod, and an L-shaped plug is fixedly installed on the front side of the threaded sleeve.

[0009] Preferably, a limiting block is fixedly installed on the top of the threaded sleeve, and the opposite side of the limiting block movably penetrates the limiting rod, and the two ends of the limiting rod are respectively fixedly connected to the inner cavity side walls of the support.

[0010] Preferably, a driving disk is fixedly mounted on the front end of the worm, and an arc-shaped groove is formed on the front side of the driving disk.

[0011] Preferably, conduits are installed on both sides of the controller body, and connecting pipe A and connecting pipe B are installed at the ends of the conduits away from each other. The ends of connecting pipe A and connecting pipe B away from each other respectively penetrate the inner cavity side walls of the sealing box, and the solenoid valve sleeve is arranged on connecting pipe A.

[0012] Preferably, rectangular openings are provided on the top of the support near both sides, connecting columns are fixedly installed on the bottom of the controller body near both sides, and the connecting columns are movably inserted into the inner cavities of adjacent rectangular openings, and slots are provided on the opposite sides of the connecting columns, and the sides of the L-shaped plug blocks that are away from each other are movably inserted in the inner cavities of adjacent slots.

[0013] Preferably, the adjustment assembly includes a movable shaft rotatably connected to the inner cavity of the arc-shaped groove near the top and a vertical rod fixedly sleeved on the movable shaft, and a protective sleeve is fixedly sleeved on the outer periphery of the vertical rod near the bottom end.

[0014] Preferably, a torsion spring is provided on the movable sleeve near one end of the outer circumference of the movable shaft, and the two ends of the torsion spring are respectively fixedly connected to the inner cavity side wall of the adjacent arc-shaped groove and the movable shaft.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] 1. The rotation of the worm can cause the worm wheel meshing therewith to rotate. With the coordinated use of the threaded rod, the threaded sleeve, the limit block and the limit rod, the L-shaped plug can be moved to the side away from each other and inserted into the inner cavity of the adjacent slot, which is convenient for the installation of the controller body and the subsequent disassembly and maintenance of the controller body, thereby improving the use effect of the device.

[0017] 2. When the worm is driven to rotate, the vertical rod can be flipped and the driving disk can be driven by the vertical rod, which is convenient for the staff to drive the worm. The user's hands can be protected by providing a protective cover. The vertical rod can be stored in the inner cavity of the arc groove by providing a torsion spring, thereby improving the aesthetics of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model;

[0019] Figure 2 It is a partial cross-sectional three-dimensional structural schematic diagram of the utility model;

[0020] Figure 3 This is an exploded view of the controller body and the support of the utility model;

[0021] Figure 4 It is a schematic diagram of the three-dimensional structure of the support of the utility model in top section;

[0022] Figure 5 For the utility model Figure 2 Enlarged view of point A in the middle;

[0023] Figure 6 For the utility model Figure 5 Enlarged view of point B in the middle;

[0024] Figure 7 For the utility model Figure 4 Enlarged view of point C in the middle;

[0025] Figure 8 For the utility model Figure 4 Enlarged view of point D in the middle.

[0026] In the figure: 1. sealing box; 2. sealing door; 3. support; 31. rectangular opening; 4. controller body; 41. connecting column; 42. slot; 5. solenoid valve; 6. control module; 7. sensor; 8. alarm; 9. installation assembly; 91. worm; 911. drive disk; 912. arc groove; 92. worm wheel; 93. threaded rod; 94. threaded sleeve; 941. limit block; 942. limit rod; 95. L-shaped plug; 10. adjustment assembly; 101. movable shaft; 1011. torsion spring; 102. vertical rod; 103. protective cover. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] Example 1: Please refer to Figure 1-8 , a gas mass flow controller for avoiding leakage, comprising a sealed box 1 and a sensor 7 fixedly installed on the side wall of the inner cavity of the sealed box 1, a control module 6 is fixedly installed near the top of the inner cavity of the sealed box 1, an alarm 8 is arranged near one side of the top of the sealed box 1, and an electromagnetic valve 5 is arranged near the bottom of the inner cavity of the sealed box 1. By arranging the control module 6, the sensor 7, the alarm 8, and the electromagnetic valve 5, when gas leaks, the electromagnetic valve 5 is closed by the control module 6, and the alarm 8 is used to alert the staff. The control module 6, the sensor 7, the alarm 8, and the electromagnetic valve 5 are prior art. A gas mass flow controller for avoiding leakage with a publication number of CN115929965A has been disclosed, wherein a sealed door 2 is movably installed on the front side of the sealed box 1, a support 3 is fixedly installed near the other side of the bottom of the inner cavity of the sealed box 1, a mounting assembly 9 is arranged in the inner cavity of the support 3, an adjustment assembly 10 is arranged on the mounting assembly 9, and a controller body 4 is arranged on the top of the support 3;

[0029] The mounting assembly 9 comprises a worm 91 movably penetrating the front side of the inner cavity of the support 3 and a worm wheel 92 meshing at the bottom of the worm 91 , a bearing is fixedly mounted on the front side of the support 3 near the other side, and the rear end of the worm 91 penetrates the inner cavity of the bearing, a threaded rod 93 penetrates at the center of one side of the worm wheel 92, and the outer periphery of the threaded rod 93 is provided with opposite external threads, and the two ends of the threaded rod 93 are respectively rotatably connected to the inner cavity side wall of the support 3, and the outer periphery of the threaded rod 93 is threadedly connected with a threaded sleeve 94 near the middle position, and the front side of the threaded sleeve 94 is fixedly mounted with an L-shaped plug 95, and the rotation of the worm 91 can make the worm wheel 92 meshing therewith rotate, and the coordinated use of the threaded rod 93, the threaded sleeve 94, the limit block 941 and the limit rod 942 can make the L-shaped plug 95 move to the side away from each other and be inserted into the inner cavity of the adjacent slot 42, so as to facilitate the installation of the controller body 4 and the subsequent disassembly and maintenance of the controller body 4, thereby improving the use effect of the device.

[0030] A limiting block 941 is fixedly installed on the top of the threaded sleeve 94, and the opposite side of the limiting block 941 is movably connected to the limiting rod 942, and a through hole is opened on the opposite side of the limiting block 941, and the limiting rod 942 passes through the inner cavity of the through hole, and the two ends of the limiting rod 942 are respectively fixedly connected to the inner cavity side walls of the support 3. By setting the limiting rod 942 and the limiting block 941, the threaded sleeve 94 can be limited when moving.

[0031] A driving disk 911 is fixedly mounted at the front end of the worm 91 . An arc groove 912 is formed at the front side of the driving disk 911 . The worm 91 can be driven by disposing the driving disk 911 .

[0032] Conduits are installed on both sides of the controller body 4, and connecting pipes A and B are installed at the ends of the conduits away from each other. The ends of connecting pipes A and B away from each other respectively penetrate the inner cavity side walls of the sealing box 1, and the solenoid valve 5 is sleeved on the connecting pipe A. By setting the connecting pipes A and B, it can be connected to the external pipeline.

[0033] Rectangular openings 31 are provided on the top of the support 3 near both sides, and connecting columns 41 are fixedly installed on the bottom of the controller body 4 near both sides, and the connecting columns 41 are movably inserted into the inner cavities of adjacent rectangular openings 31, and slots 42 are provided on the opposite sides of the connecting columns 41, and the sides of the L-shaped plug blocks 95 that are away from each other are movably inserted in the inner cavities of adjacent slots 42.

[0034] Embodiment 2: This embodiment is an improvement made on the basis of embodiment 1. For details, please refer to Figure 2 , Figure 5 and Figure 6 The adjustment component 10 includes a movable shaft 101 rotatably connected to the inner cavity of the arc groove 912 near the top and a vertical rod 102 fixedly sleeved on the movable shaft 101. A protective sleeve 103 is fixedly sleeved on the outer periphery of the vertical rod 102 near the bottom end. When the worm 91 is driven to rotate, the vertical rod 102 can be flipped and the driving disk 911 can be driven by the vertical rod 102, which is convenient for the staff to drive the worm 91, and the protective sleeve 103 can be provided to protect the user's hands.

[0035] A torsion spring 1011 is provided on the outer periphery of the movable shaft 101 near one end, and the two ends of the torsion spring 1011 are respectively fixedly connected to the inner cavity side wall of the adjacent arc groove 912 and the movable shaft 101. By providing the torsion spring 1011, the vertical rod 102 can be accommodated in the inner cavity of the arc groove 912, thereby improving the aesthetics of the device.

[0036] Working principle: When the utility model is in use, by setting the control module 6, the sensor 7, the alarm 8, and the solenoid valve 5, when the gas leaks, the solenoid valve 5 is closed by the control module 6, and the alarm 8 is used to alert the staff. When the controller body 4 needs to be disassembled, the vertical rod 102 is flipped, and the driving disk 911 is driven by the vertical rod 102. When the driving disk 911 rotates, the worm 91 fixed on the driving disk 911 can be rotated, and then the worm wheel 92 meshing with it can be rotated, so that the gas leaks. The threaded rod 93 can be rotated. When the threaded rod 93 rotates, with the cooperation of the threaded sleeve 94, the limit block 941 and the limit rod 942, the L-shaped plug block 95 can be moved to the side away from each other and inserted into the inner cavity of the adjacent slot 42, which is convenient for the subsequent disassembly and maintenance of the controller body 4 and improves the use effect of the device. After the controller body 4 is disassembled, the vertical rod 102 is loosened and the vertical rod 102 can be stored in the inner cavity of the arc groove 912 under the action of the torsion spring 1011, thereby improving the aesthetics of the device.

[0037] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0038] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A gas mass flow controller for preventing leakage, comprising a sealed box (1) and a sensor (7) fixedly mounted on the side wall of the inner cavity of the sealed box (1), a control module (6) fixedly mounted near the top of the inner cavity of the sealed box (1), an alarm (8) is arranged near one side of the top of the sealed box (1), and a solenoid valve (5) is arranged near the bottom of the inner cavity of the sealed box (1), characterized in that: A sealing door (2) is movably mounted on the front side of the sealing box (1); a support (3) is fixedly mounted on the bottom of the inner cavity of the sealing box (1) near the other side; a mounting assembly (9) is disposed in the inner cavity of the support (3); an adjustment assembly (10) is disposed on the mounting assembly (9); and a controller body (4) is disposed on the top of the support (3); The mounting assembly (9) comprises a worm (91) movably penetrating the front side of the inner cavity of the support (3) and a worm wheel (92) meshed with the bottom of the worm (91); a threaded rod (93) penetrates the center of one side of the worm wheel (92); the two ends of the threaded rod (93) are respectively rotatably connected to the inner cavity side wall of the support (3); a threaded sleeve (94) is threadedly connected to the outer periphery of the threaded rod (93) near the middle position; and an L-shaped plug block (95) is fixedly installed on the front side of the threaded sleeve (94).

2. A gas mass flow controller for avoiding leakage according to claim 1, characterized in that: A limiting block (941) is fixedly installed on the top of the threaded sleeve (94), and the opposite side of the limiting block (941) is movably connected to the limiting rod (942), and the two ends of the limiting rod (942) are respectively fixedly connected to the inner cavity side wall of the support (3).

3. A gas mass flow controller for avoiding leakage according to claim 1, characterized in that: A driving disc (911) is fixedly mounted on the front end of the worm (91), and an arc-shaped groove (912) is provided on the front side of the driving disc (911).

4. A gas mass flow controller for avoiding leakage according to claim 1, characterized in that: Conduits are installed on both sides of the controller body (4), and connecting pipes A and B are installed at the ends of the conduits that are away from each other. The ends of connecting pipes A and B that are away from each other respectively penetrate the inner cavity side walls of the sealing box (1), and the solenoid valve (5) is sleeved on the connecting pipe A.

5. A gas mass flow controller for avoiding leakage according to claim 1, characterized in that: The top of the support (3) is provided with rectangular openings (31) near both sides, and the bottom of the controller body (4) is fixedly installed with connecting columns (41) near both sides, and the connecting columns (41) are respectively movably inserted into the inner cavities of adjacent rectangular openings (31), and the opposite sides of the connecting columns (41) are respectively provided with slots (42), and the opposite sides of the L-shaped plug blocks (95) are respectively movably inserted into the inner cavities of adjacent slots (42).

6. A gas mass flow controller for avoiding leakage according to claim 1, characterized in that: The adjustment assembly (10) comprises a movable shaft (101) rotatably connected to the inner cavity of the arc-shaped groove (912) near the top and a vertical rod (102) fixedly sleeved on the movable shaft (101); a protective sleeve (103) is fixedly sleeved on the outer periphery of the vertical rod (102) near the bottom end.

7. A gas mass flow controller for avoiding leakage according to claim 6, characterized in that: A torsion spring (1011) is provided on the outer circumference of the movable shaft (101) near one end thereof, and the two ends of the torsion spring (1011) are respectively fixedly connected to the inner cavity side wall of the adjacent arc-shaped groove (912) and the movable shaft (101).

Images