Safety protection device of powder conveying system

Abstract

The utility model relates to the technical field of pipeline safety protection, and discloses a safety protection device of a powder conveying system, which comprises a protection shell and a linkage component arranged on the inner side of the protection shell. A first safety valve is arranged at the bottom of the protective shell, a positioning sliding rod is arranged on the inner side of the protective shell, a second safety valve is arranged on the right side of the positioning sliding rod, and a common conveying pipeline is arranged on the inner side of the first safety valve and the inner side of the second safety valve. The linkage component comprises a connecting rod, the connecting rod is of an L-shaped structure, the connecting rod is arranged at the bottom of the positioning sliding rod, and the other end of the connecting rod is connected with the first safety valve. According to the safety protection device of the powder conveying system, dual protection mechanisms of the first safety valve and the second safety valve are integrated, the positioning sliding rod is linked through the connecting rod, the first safety valve is driven to be closed when the second safety valve is closed, the response speed of the device is increased, and the protection effect of the device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline safety protection, and particularly relates to a safety protection device for a powder conveying system. Background Technique

[0002] In a powder conveying system, a safety protection device is a key component to ensure the smooth progress of the production process and prevent safety accidents such as dust explosions.

[0003] However, the existing safety protection devices often have the following deficiencies in design and function:

[0004] (1) Slow response speed: Many safety protection devices have a long response time after detecting a danger signal due to complex mechanisms or low-efficiency driving methods, and cannot quickly cut off the conveying system or take effective protective measures.

[0005] (2) Single protection mechanism: Some safety protection devices only rely on a single safety valve or sensor, lacking multiple protection mechanisms. Once a certain part fails, the entire system faces safety risks.

[0006] In view of the above deficiencies, a safety protection device for a powder conveying system is proposed. Content of the Utility Model

[0007] (1) Technical problems to be solved

[0008] In view of the deficiencies of the prior art, the utility model provides a safety protection device for a powder conveying system, which has the advantages of fast response and linkage type multiple protection, and solves the problems of slow response speed and single protection mechanism.

[0009] (2) Technical solutions

[0010] To achieve the above purpose of fast response and linkage type multiple protection, the utility model provides the following technical solutions: A safety protection device for a powder conveying system includes a protection housing and a linkage component, and the linkage component is arranged inside the protection housing;

[0011] A first safety valve is arranged at the bottom of the protection housing, a positioning slide bar is arranged inside the protection housing, a second safety valve is arranged on the right side of the positioning slide bar, a common conveying pipeline is arranged inside the first safety valve and the second safety valve, the conveying pipeline is in a right-angle structure, and a gas sensor is fixedly installed on the outer surface of the protection housing;

[0012] The linkage component includes a connecting rod, the connecting rod is in an "L" shape, the connecting rod is arranged at the bottom of the positioning slide bar, and the other end of the connecting rod is connected to the first safety valve.

[0013] As a preferred technical solution of the present utility model, two telescopic spring shafts are electrically connected to the bottom circuit of the protection housing. Isolation plates are fixedly installed at the bottoms of the two telescopic spring shafts. The isolation plates can cover the inner cavity bottom of the first safety valve. At this time, the telescopic spring shafts are in an uncompressed state. Side baffles arranged inside the first safety valve are movably installed on both the left and right sides of the isolation plates.

[0014] As a preferred technical solution of the present utility model, a linear motor is arranged in the inner cavity of the protection housing. A positioning slide rod is installed on the linear motor. The positioning slide rod is slidably installed inside the protection housing. A clamping plate located outside the protection housing is fixedly installed on the right side of the positioning slide rod. A clamping groove is formed on the right inner wall of the second safety valve. The clamping plate is slidably installed inside the second safety valve. The clamping plate can be mutually clamped with the clamping groove.

[0015] The beneficial effects of the above preferred technical solution are as follows: The linear motor can precisely control the movement of the positioning slide rod, thereby ensuring the precise clamping of the clamping plate and the clamping groove inside the second safety valve. This precise control not only improves the closing efficiency of the safety valve but also ensures its reliability in emergency situations.

[0016] As a preferred technical solution of the present utility model, collectors signal-connected to gas sensors are arranged at one ends of the first safety valve and the second safety valve. The gas sensor drives the isolation plate to move upward. The gas sensor is electrically connected to the linear motor.

[0017] As a preferred technical solution of the present utility model, the connecting rod is fixedly installed at the bottom of the positioning slide rod located outside the protection housing. A magnetic sheet that fits the protection housing is arranged on the outside of the connecting rod. A fixing plate connected to the positioning slide rod is fixedly installed at the top of the connecting rod.

[0018] As a preferred technical solution of the present utility model, limiting card slots are formed on the sides of the two telescopic spring shafts. Two limiting card posts are fixedly installed on the front of the connecting rod. The two limiting card posts can be slidably clamped inside the limiting card slots. At this time, the telescopic spring shafts are in a compressed state.

[0019] (III) Beneficial effects

[0020] Compared with the prior art, the present utility model provides a safety protection device for a powder conveying system, which has the following beneficial effects:

[0021] This safety protection device for the powder conveying system integrates a dual protection mechanism of the first safety valve and the second safety valve, and uses a connecting rod to link the positioning slide rod, which is convenient for driving the closing of the first safety valve when closing the second safety valve, enhancing the response speed and protection effect of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic plan view of the present utility model;

[0023] Figure 2 is a schematic internal sectional view of the present utility model;

[0024] Figure 3 is a schematic side top view of the present utility model.

[0025] In the figure: 1. protection housing; 2. conveying pipeline; 3. first safety valve; 4. second safety valve; 5. gas sensor; 6. positioning slide bar; 7. connecting rod; 8. isolation plate; 9. magnetic sheet; 10. telescopic spring shaft; 11. side baffle; 12. limit card slot; 13. limit card post; 14. engaging groove; 15. engaging plate; 16. fixing plate. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0027] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model 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 should not be construed as a limitation of the present utility model.

[0028] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" 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 direct connection, or an indirect connection through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0029] Please refer to Figures 1-3 , a safety protection device for a powder conveying system, including a protection housing 1 and a linkage component, and the linkage component is arranged inside the protection housing 1.

[0030] A first safety valve 3 is provided at the bottom of the protective housing 1. A positioning slide bar 6 is provided inside the protective housing 1. A second safety valve 4 is provided on the right side of the positioning slide bar 6. A common conveying pipeline 2 is provided inside the first safety valve 3 and the second safety valve 4. The conveying pipeline 2 has a right-angled structure. A gas sensor 5 is fixedly installed on the outer surface of the protective housing 1. Through the settings of the first safety valve 3 and the second safety valve 4, a double truncation mechanism is formed on the conveying pipeline 2. Once an abnormal situation is detected by means of the gas sensor 5, such as the gas concentration exceeding the standard, any safety valve can quickly respond and cut off the powder conveying, effectively preventing the expansion of the accident.

[0031] In this embodiment, two telescopic spring shafts 10 are electrically connected to the bottom of the protective housing 1. Isolation plates 8 are fixedly installed at the bottoms of the two telescopic spring shafts 10. The isolation plates 8 can cover the inner cavity bottom of the first safety valve 3. At this time, the telescopic spring shafts 10 are in an uncompressed state. Lateral baffles 11 provided inside the first safety valve 3 are movably installed on the left and right sides of the isolation plates 8.

[0032] It should be noted that the isolation plate 8 driven by the telescopic spring shaft 10 can quickly cover the inner cavity bottom of the first safety valve 3 in an emergency to form a physical isolation. At the same time, the lateral baffle 11 prevents the powder from leaking from the side, further enhancing the safety protection effect. The compression treatment of the telescopic spring shaft 10 facilitates a more rapid blockage when the restriction is released.

[0033] In this embodiment, a linear motor is provided in the inner cavity of the protective housing 1. The linear motor is installed with a positioning slide bar 6. The positioning slide bar 6 is slidably installed inside the protective housing 1. A clamping plate 15 located outside the protective housing 1 is fixedly installed on the right side of the positioning slide bar 6. A clamping groove 14 is opened on the right side inner wall of the second safety valve 4. The clamping plate 15 is slidably installed inside the second safety valve 4. The clamping plate 15 can be mutually clamped with the clamping groove 14.

[0034] It should be noted that the combination of the linear motor and intelligent components such as the gas sensor 5 realizes the automatic and intelligent control of the safety protection device. When the gas sensor detects an abnormal situation, the linear motor can quickly respond and drive the positioning slide bar 6 and the clamping plate 15 to act to close the safety valve.

[0035] In this embodiment, collectors that are signal-connected to the gas sensor 5 are provided at one end of the first safety valve 3 and the second safety valve 4. The gas sensor 5 drives the isolation plate 8 to move upward. The gas sensor 5 is electrically connected to the linear motor.

[0036] It should be noted that the gas sensor 5 can monitor the gas status in the conveying pipeline 2 and the surrounding environment in real time, such as dust concentration, harmful gas content, etc. Once an abnormal situation is detected, such as excessive concentration, the collector will immediately send a signal. After the receiver contained in the gas sensor 5 receives the signal, it will quickly trigger the corresponding safety protection measures. The gas sensor 5 is connected to the linear motor phase circuit, so that the linear motor can receive the signal and drive the positioning slide rod 6 and the clamping plate 15 to move, quickly close the second safety valve 4, and achieve double protection.

[0037] After the threat of abnormal gas is eliminated, the gas sensor 5 directly drives it to be transmitted upward, so that the isolation plate 8 is away from the bottom of the inner cavity of the first safety valve 3 and the conveying pipeline 2 is circulated again.

[0038] The linkage component includes a connecting rod 7, which has an "L"-shaped structure. The connecting rod 7 is arranged at the bottom of the positioning slide rod 6. The other end of the connecting rod 7 is connected to the first safety valve 3. The connecting rod 7 adopts an "L"-shaped structure. This design increases its structural stability and can maintain good rigidity when bearing the force from the positioning slide rod 6, and is not prone to deformation or breakage.

[0039] In this embodiment, the connecting rod 7 is fixedly installed at the bottom of the positioning slide rod 6 located on the outside of the protective shell 1. A magnetic attraction sheet 9 that fits with the protective shell 1 is provided on the outside of the connecting rod 7. A fixing plate 16 connected to the positioning slide rod 6 is fixedly installed on the top of the connecting rod 7. The top of the connecting rod 7 is tightly connected to the positioning slide rod 6 through the fixing plate 16. This fixing method not only strengthens the connection strength between the connecting rod and the positioning slide rod, but also ensures the stability and accuracy of the positioning slide rod during the sliding process.

[0040] In this embodiment, the sides of the two telescopic spring shafts 10 are provided with limit slots 12, and two limit posts 13 are fixedly installed on the front of the connecting rod 7. The two limit posts 13 can be slidably connected to the inner side of the limit slots 12. At this time, the telescopic spring shaft 10 is in a compressed state. The cooperation between the limit posts 13 and the limit slots 12 ensures a stable connection between the connecting rod 7 and the telescopic spring shaft 10, so that it is in a compressed state, which is convenient for the circulation of powder in the conveying pipe 2.

[0041] It should be noted that when the gas sensor 5 detects an abnormality, the linear motor drives the positioning slide bar 6 to slide to the right, and at the same time moves to the right with the help of the connecting rod 7, so that the limit clamping column 13 disengages from the limit clamping slot 12, releases the compression limit of the telescopic spring shaft 10, and moves the isolation plate 8 downward rapidly under the influence of the elastic force, so that it fits with the bottom of the inner cavity of the first safety valve 3. At the same time, the positioning slide bar 6 fixes the locking plate 15 on the inner side of the locking slot 14, forming a double cut-off safety protection.

[0042] The beneficial effects of the above embodiments are:

[0043] By integrating the dual protection mechanism of the first safety valve 3 and the second safety valve 4 and linking the positioning slide rod 6 with the connecting rod 7, it is convenient to drive the closing of the first safety valve 3 when closing the second safety valve 4, thereby enhancing the response speed and protection effect of the device.

[0044] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A safety protection device for a powder conveying system, comprising a protection shell (1) and a linkage component, wherein the linkage component is arranged on the inner side of the protection shell (1); Features: A first safety valve (3) is arranged at the bottom of the protective shell (1), a positioning slide bar (6) is arranged on the inner side of the protective shell (1), a second safety valve (4) is arranged on the right side of the positioning slide bar (6), a common delivery pipeline (2) is arranged on the inner sides of the first safety valve (3) and the second safety valve (4), the delivery pipeline (2) is in a right-angle structure, and a gas sensor (5) is fixedly mounted on the outer surface of the protective shell (1); The linkage component comprises a connecting rod (7), the connecting rod (7) is in an "L"-shaped structure, the connecting rod (7) is arranged at the bottom of the positioning slide rod (6), and the other end of the connecting rod (7) is connected to the first safety valve (3).

2. A safety protection device for a powder conveying system according to claim 1, characterized in that: The bottom circuit of the protective housing (1) is connected to two telescopic spring shafts (10), and the bottoms of the two telescopic spring shafts (10) are fixedly installed with isolation plates (8), and the isolation plates (8) can cover the bottom of the inner cavity of the first safety valve (3). At this time, the telescopic spring shafts (10) are in an uncompressed state, and side baffles (11) arranged on the inner side of the first safety valve (3) are movably installed on the left and right sides of the isolation plates (8).

3. A safety protection device for a powder conveying system according to claim 2, characterized in that: The inner cavity of the protective shell (1) is provided with a linear motor, and the linear motor is installed with a positioning slide bar (6). The positioning slide bar (6) is slidably installed on the inner side of the protective shell (1), and a clamping plate (15) located on the outer side of the protective shell (1) is fixedly installed on the right side of the positioning slide bar (6). A clamping groove (14) is opened on the right side of the inner wall of the second safety valve (4), and the clamping plate (15) is slidably installed on the inner side of the second safety valve (4). The clamping plate (15) can be mutually clamped with the clamping groove (14).

4. A safety protection device for a powder conveying system according to claim 3, characterized in that: One end of each of the first safety valve (3) and the second safety valve (4) is provided with a collector which is connected to a gas sensor (5) in phase with a signal. The gas sensor (5) drives the isolation plate (8) to transmit upwards. The gas sensor (5) is connected to a linear motor phase circuit.

5. The safety protection device for a powder conveying system according to claim 4, characterized in that: The connecting rod (7) is fixedly mounted on the bottom of a positioning slide rod (6) located outside the protective shell (1); a magnetic attraction sheet (9) that fits the protective shell (1) is arranged on the outside of the connecting rod (7); and a fixing plate (16) that is connected to the positioning slide rod (6) is fixedly mounted on the top of the connecting rod (7).

6. A safety protection device for a powder conveying system according to claim 5, characterized in that: The sides of the two telescopic spring shafts (10) are provided with limit slots (12), and the front side of the connecting rod (7) is fixedly mounted with two limit posts (13). The two limit posts (13) can be slidably engaged with the inner sides of the limit slots (12), and the telescopic spring shafts (10) are in a compressed state.

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