A bend pipe cleaning device

Abstract

The utility model discloses a kind of elbow pipeline cleaning devices, suitable for being installed on conveying elbow, comprising: cleaning lance and control valve, the cleaning lance is installed on the inner wall of the bending section of conveying elbow, the cleaning lance is equipped with air inlet and airflow outlet and the airflow passage that intercommunication air inlet and airflow outlet, air inlet is set outside conveying elbow and is suitable for connecting external gas source, airflow outlet is set to the inner wall of the cleaning lance towards conveying elbow;The control valve is set on the connecting pipeline between external gas source and air inlet, the control valve is suitable for controlling the on-off of compressed gas into the cleaning lance. The utility model has good cleaning effect, and low damage to pipeline.

Description

Technical Field

[0001] This utility model relates to a cleaning device for curved pipes. Background Technology

[0002] Powder materials are prone to adhesion and accumulation during pipeline transportation, especially in bends, which can lead to pipeline blockage, reduced transportation efficiency, frequent shutdowns for cleaning, and increased production costs and maintenance difficulty.

[0003] After searching the existing technology, it was found that Chinese patent CN221475796U discloses a powder conveying pipe for PVC flooring production. It achieves the anti-blocking function by setting an anti-blocking mechanism on the outside of the conveying bend and using a micro motor to drive a cam mechanism to drive a sliding plate and a rubber block to periodically impact the outer wall of the bend, thereby loosening the material accumulated in the pipe through vibration.

[0004] However, the existing technologies mentioned above have the following shortcomings: First, vibration can only loosen the accumulated material and cannot effectively remove the material attached to the pipe wall, resulting in limited cleaning effect; Second, the mechanical vibration structure is complex, containing multiple moving parts such as motors, cams, and sliding mechanisms, leading to a high failure rate and high maintenance costs; Third, continuous mechanical vibration can cause fatigue damage to the pipeline and affect its service life; Fourth, the vibration generates significant noise, affecting the working environment. Summary of the Invention

[0005] The technical problem to be solved by this utility model is to overcome the defects of the prior art and provide a pipe cleaning device with good cleaning effect and low damage to the pipe.

[0006] To solve the above-mentioned technical problems, the technical solution of this utility model is: a pipe bend cleaning device, suitable for installation on a conveying bend, comprising:

[0007] A cleaning nozzle is installed on the inner wall of the curved section of a conveying bend. The cleaning nozzle has an air inlet and an air outlet, as well as an airflow channel connecting the air inlet and the air outlet. The air inlet is located outside the conveying bend and is adapted to connect to an external air source. The air outlet is located on the inner wall of the cleaning nozzle facing the conveying bend.

[0008] A control valve is provided on the connecting pipeline between the external air source and the air inlet, and the control valve is adapted to control the on / off of compressed gas entering the cleaning nozzle.

[0009] Furthermore, a specific type of control valve is provided, wherein the control valve is a solenoid valve.

[0010] Furthermore, the pipe cleaning device also includes a protective mechanism, which comprises:

[0011] A hinge shaft is mounted on the cleaning nozzle and located at the airflow outlet of the cleaning nozzle;

[0012] A protective cover, one end of which is hinged to the hinge shaft;

[0013] An elastic element, which is sleeved on the hinge shaft;

[0014] The protective cover covers the airflow outlet under the elastic force of the elastic element, and opens by pushing the protective cover against the elastic force of the elastic element when compressed gas passes through the airflow channel.

[0015] Furthermore, the elastic element is a spring.

[0016] Furthermore, the curved pipe cleaning device also includes a sealing ring, which is disposed between the contact surfaces of the cleaning nozzle and the delivery curved pipe.

[0017] Furthermore, the pipe cleaning device also includes an air valve, which is installed on the connecting pipe between the external air source and the control valve.

[0018] Furthermore, the cleaning nozzle is provided with a nozzle section, and the nozzle section is provided with two airflow outlets, which are respectively directed to the radial inner wall and the radial outer wall of the curved section of the conveying bend.

[0019] By adopting the above technical solution, this utility model has the following beneficial effects:

[0020] In this invention, during operation, compressed gas generated by an external air source enters the inlet of the cleaning nozzle through the opening of a control valve. The compressed gas flows along the airflow channel and is ejected at high speed from the airflow outlet, directly impacting the inner wall surface of the curved section of the conveying bend. Because the cleaning nozzle is installed on the inner wall of the curved section of the conveying bend, and the airflow outlet is located facing the inner wall of the conveying bend, the high-pressure airflow can precisely act on the accumulated dirt and impurities on the inner wall of the curved section. The impact force of the airflow peels off and disperses the dirt adhering to the inner wall. This effectively solves the technical problem of difficult cleaning of the curved section of the conveying bend, achieving efficient cleaning of the inner wall of the bend and ensuring unobstructed pipeline flow and conveying efficiency.

[0021] In addition, the protective cover in the protective mechanism covers the airflow outlet under the action of the elastic element, effectively preventing external impurities from entering the cleaning nozzle. It can automatically open when compressed gas passes through, ensuring the reliability and service life of the equipment. The sealing ring is set between the contact surface of the cleaning nozzle and the conveying bend, ensuring the sealing of the connection and preventing compressed gas leakage. The nozzle section has two airflow outlets pointing to the radial inner wall and radial outer wall of the bend section respectively, realizing all-round cleaning coverage of the inner wall of the bend section.

[0022] In summary, this utility model achieves precise and efficient cleaning of the inner wall of the curved section of the conveying pipe by setting a cleaning nozzle and configuring a control valve. It solves the technical problem that traditional cleaning methods cannot reach the curved parts and has the advantages of convenient operation and good cleaning effect. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural diagram of the pipe cleaning device in Embodiment 1;

[0024] Figure 2 for Figure 1 A magnified view of part A in the middle;

[0025] Figure 3 This is a three-dimensional structural diagram of the pipe cleaning device in Embodiment 2;

[0026] Figure 4 for Figure 3 A magnified view of part B in the middle section;

[0027] Figure 5 This is a three-dimensional structural diagram of the pipe cleaning device in Embodiment 3;

[0028] Figure 6 for Figure 5 A magnified view of part C in the middle. Detailed Implementation

[0029] To make the contents of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0030] Example 1: As Figure 1-2 As shown, a pipe bend cleaning device, suitable for installation on a conveying bend 1, includes:

[0031] Cleaning nozzle 2 is installed on the inner wall of the curved section of the conveying bend 1. The cleaning nozzle 2 is provided with an air inlet and an air outlet, as well as an airflow channel connecting the air inlet and the air outlet. The air inlet is located outside the conveying bend 1 and is suitable for connecting to an external air source. The air outlet is located on the inner wall of the cleaning nozzle 2 facing the conveying bend 1.

[0032] A control valve is installed on the connecting pipe between the external air source and the air inlet. The control valve is suitable for controlling the on / off of the compressed gas entering the cleaning nozzle 2.

[0033] In this embodiment, as Figure 1-2 As shown, during operation, compressed gas generated by an external air source enters the inlet of the cleaning nozzle 2 through the opening of a control valve. The compressed gas flows along the airflow channel and is ejected at high speed from the airflow outlet, directly impacting the inner wall surface of the curved section of the conveying bend 1. Since the cleaning nozzle 2 is installed on the inner wall of the curved section of the conveying bend 1, and the airflow outlet is located facing the inner wall of the conveying bend 1, the high-pressure airflow can act on the accumulated dirt and impurities on the inner wall of the curved section. The impact force of the airflow peels off and blows away the dirt adhering to the inner wall. This solves the technical problem of difficult cleaning of the curved section of the conveying bend 1, achieving cleaning of the inner wall of the bend and ensuring the smooth flow of the pipeline and its conveying function.

[0034] Specifically, such as Figure 1-2 As shown, the control valve is a solenoid valve.

[0035] In this embodiment, as Figure 1-2 As shown,

[0036] Example 2: This example is basically the same as Example 1, except that:

[0037] Specifically, such as Figure 3-4 As shown, the pipe cleaning device also includes a protective mechanism, which includes:

[0038] The hinge shaft is mounted on the cleaning nozzle 2 and is located at the airflow outlet of the cleaning nozzle 2.

[0039] Protective cover 5, one end of which is hinged to the hinge shaft;

[0040] The elastic element is sleeved on the hinge shaft;

[0041] The protective cover 5 covers the airflow outlet under the elastic force of the elastic element, and when the compressed gas passes through the airflow channel, it pushes the protective cover 5 to overcome the elastic force of the elastic element and open.

[0042] Specifically, the elastic element is a spring.

[0043] In this embodiment, as Figure 3-4 As shown, the protective mechanism adopts a hinged opening structure, and the protective cover 5 is connected to the cleaning nozzle 2 through the hinge shaft. When there is no cleaning operation in the delivery bend 1, the protective cover 5 covers the airflow outlet under the push of the spring force, preventing external impurities or liquids from entering the interior of the cleaning nozzle 2 and protecting the airflow channel from contamination.

[0044] When the control valve opens, compressed gas flows through the airflow channel to the airflow outlet, and the airflow pressure acts on the inner surface of the protective cover 5 to generate thrust. When the airflow thrust exceeds the spring preload, the protective cover 5 rotates outward around the hinge axis to open, allowing the compressed gas to be smoothly ejected for cleaning. After the cleaning operation is completed, the control valve closes to cut off the gas supply, the spring returns to its original position, and the protective cover 5 is driven to cover the airflow outlet again, completing one work cycle.

[0045] Specifically, the spring can be a torsion spring.

[0046] Specifically, the pipe cleaning device also includes a sealing ring (not shown in the figure), which is disposed between the contact surfaces of the cleaning nozzle 2 and the delivery bend 1.

[0047] Specifically, the pipe cleaning device also includes an air valve (not shown in the figure), which is installed on the connecting pipe between the external air source and the control valve.

[0048] In this embodiment, the sealing ring adopts an annular rubber sealing structure and is installed at the annular contact surface between the outer wall of the cleaning nozzle 2 and the inner wall of the delivery bend 1. This prevents the medium inside the delivery bend 1 from leaking from the installation interface, while also preventing external gas or impurities from entering the interior of the delivery bend 1 through the interface gap.

[0049] The air valve is installed on the connecting pipeline between the output port of the external air source and the air inlet of the control valve, serving as the main air source switch. The air valve adopts a manual ball valve structure. When cleaning operations are required, the operator first opens the air valve to establish the air source connection, then controls the specific cleaning sequence through the control valve. After the cleaning operation is completed, the air valve is closed to cut off the entire air source supply.

[0050] Example 3: This example is basically the same as Example 1, except that:

[0051] Specifically, such as Figure 5-6 As shown, the cleaning nozzle 2 is provided with a nozzle section 6, which has two airflow outlets. The two airflow outlets point to the radial inner wall and radial outer wall of the curved section of the conveying bend 1, respectively.

[0052] In this embodiment, as Figure 5-6 As shown, nozzle section 6 adopts a split-flow spray structure and is installed at the end of cleaning nozzle 2. It has a split-flow chamber inside that divides the single airflow channel into two independent outlet channels. One airflow outlet faces the radial inner wall of the curved section of the conveying bend 1, and the other airflow outlet faces the radial outer wall, forming a bidirectional spray coverage.

[0053] When the compressed gas enters the nozzle section 6, the airflow is split into two streams within the flow-dividing chamber and simultaneously ejected from two airflow outlets to clean the inner and outer walls of the curved section of the conveying bend 1. Since the accumulation of dirt on the inner and outer walls of the curved section differs during the conveying process, the dual-outlet design allows for targeted cleaning of both areas, covering the entire inner wall area of ​​the curved section.

[0054] In some embodiments, the number of airflow outlets in nozzle section 6 is not limited to two. Three or more airflow outlets can be set according to the bending angle of conveying bend 1 and cleaning requirements. The angle of the airflow outlets can also be adjusted according to the specific bend geometry.

[0055] The specific embodiments described above further illustrate the technical problems, technical solutions, and beneficial effects of this utility model. It should be understood that the above descriptions are merely specific embodiments of this utility model and are not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A pipe bend cleaning device, suitable for installation on a conveying bend (1), characterized in that, include: Cleaning nozzle (2), the cleaning nozzle (2) is installed on the inner wall of the curved section of the conveying bend (1), the cleaning nozzle (2) is provided with an air inlet and an air outlet and an airflow channel connecting the air inlet and the air outlet, the air inlet is located outside the conveying bend (1) and is adapted to connect to an external air source, and the air outlet is located on the inner wall of the cleaning nozzle (2) facing the conveying bend (1); A control valve is provided on the connecting pipe between the external air source and the air inlet, and the control valve is adapted to control the on / off of the compressed gas entering the cleaning nozzle (2); The protective mechanism includes: A hinge shaft is mounted on the cleaning nozzle (2) and located at the airflow outlet of the cleaning nozzle (2); A protective cover (5), one end of which is hinged to the hinge shaft; An elastic element, which is sleeved on the hinge shaft; The protective cover (5) covers the airflow outlet under the elastic force of the elastic element, and when the compressed gas passes through the airflow channel, the protective cover (5) is pushed to open against the elastic force of the elastic element.

2. The pipe cleaning device according to claim 1, characterized in that: The control valve is a solenoid valve.

3. The pipe cleaning device according to claim 1, characterized in that: The elastic element is a spring.

4. The pipe cleaning device according to claim 1, characterized in that: It also includes a sealing ring disposed between the contact surfaces of the cleaning nozzle (2) and the delivery bend (1).

5. The pipe cleaning device according to claim 1, characterized in that: It also includes an air valve, which is installed on the connecting pipeline between the external air source and the control valve.

6. The pipe cleaning device according to claim 1, characterized in that: The cleaning nozzle (2) is provided with a nozzle section (6), and the nozzle section (6) is provided with two airflow outlets, which are respectively directed to the inner radial wall and the outer radial wall of the curved section of the conveying bend (1).

Images