Filter bag dedusting injection pipe connecting device

Abstract

The utility model discloses a filter bag dust removal injection pipe connecting device, including connecting component, electromagnetic pulse valve and injection pipe, one end of connecting component is detachably connected with the air outlet of electromagnetic pulse valve, and the other end is detachably connected with the air inlet of injection pipe, the utility model arc tenon, mortise and mortise bite structure of lower half pipe clamp of upper half pipe clamp, the double locking design of collocation axial equidistance distribution's pipe clamp fixing piece and double hexagonal nut, has realized the positioning and stable butt joint of pipe clamp, can resist the vibration of high pressure airflow impact again, avoids long -term use loose, and the inner diameter of sealing washer is accurate with the outer diameter of pulse valve, injection pipe pipe orifice matching, and the arc curved surface of the butt joint of cooperation sealing washer is attached and the double sealing of notched bite, plus pipe clamp inner wall step -like convex, spherical structure and the integrated inlay of sealing washer, form the cooperative protection of mechanical limit and flexible sealing, overall coverage butt joint sealing surface, has improved the air tightness and long -term stability of connecting position.

Description

Technical Field

[0001] This utility model mainly relates to the field of bag filter technology, specifically a filter bag dust collector blowpipe connection device. Background Technology

[0002] A bag filter is an environmental protection device that uses filter material (filter bags) to purify dust-laden gas. Its core principle is to allow dust-laden gas to pass through the filter bags, so that dust particles are intercepted on the surface or inside of the filter bags, thereby achieving the separation of gas and dust. The purified gas meets emission standards and is widely used in the treatment of waste gas in industries such as steel, cement, power, and chemicals.

[0003] The filter bag dust collector blowpipe connection device is a key component in the pulse cleaning system of a bag filter. It specifically refers to the connection structure and related parts used to connect the blowpipe to the pulse valve, filter bag inlet, or dust collector housing. Its core function is to ensure that compressed air can be delivered to each filter bag in a sealed, stable, and accurate manner from the blowpipe during the cleaning process. The high-pressure airflow removes dust from the surface of the filter bags, ensuring the filtration efficiency and operational stability of the bag filter. Its structural design directly affects the cleaning effect, equipment sealing, and ease of maintenance. However, existing filter bag dust collector blowpipe connection devices mostly use flanged pipe connections or ordinary rubber hoses with single-bolt clamps for transition. Flange pipe connections require the removal of multiple bolts at both ends, and misalignment is easy to occur during connection. Ordinary rubber hoses have weak vibration resistance and are prone to high-temperature aging and damage. They also lack effective limiting and double sealing structures, leading to easy leakage under high-pressure airflow. Utility Model Content

[0004] This utility model addresses the problem that existing technical solutions are too simplistic by providing a filter bag dust collector blowpipe connection device. This device solves the technical problems mentioned in the background section, where existing connections often use flanges or ordinary rubber hoses, which are prone to misalignment during docking, have weak vibration and anti-loosening capabilities, and cannot form a sealing structure, leading to airflow leakage.

[0005] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: A filter bag dust collector blowpipe connection device includes a connecting component, an electromagnetic pulse valve, and a blowpipe. One end of the connecting component is detachably connected to the air outlet of the electromagnetic pulse valve, and the other end is detachably connected to the air inlet of the blowpipe.

[0006] The connecting component includes an upper valve clamp and a lower valve clamp. Both ends of the outer wall of the upper valve clamp and the lower valve clamp are welded with clamp fixing parts. After the upper valve clamp and the lower valve clamp are engaged, they form a tubular structure to accommodate the part where the air outlet of the electromagnetic pulse valve connects with the air inlet of the blowpipe.

[0007] Furthermore, the pipe clamp fixing components are distributed at equal intervals along the axial direction of the upper and lower pipe clamps, and the pipe clamp fixing components of the upper and lower pipe clamps correspond one-to-one in the vertical direction and fit together with each other. Each pipe clamp fixing component is provided with a mounting hole that runs through it in the vertical direction. The upper and lower pipe clamps are detachably connected by screws that pass through the mounting holes and double hexagonal nuts that are threaded to both ends of the screws.

[0008] Furthermore, the upper valve clamp has outwardly protruding arc-shaped tenon structures on both sides of its open end. The surface of the arc-shaped tenon is a continuous and smooth slope from the edge to the center. The lower valve clamp has arc-shaped recessed tenons at corresponding positions on both sides of its open end, which are adapted to the arc-shaped tenon structures. The upper valve clamp and the lower valve clamp form a tenon and mortise structure that interlocks with each other through corresponding ends.

[0009] Furthermore, the inner wall of the upper valve clamp is covered with an upper valve sealing gasket along its axial length, and the inner wall of the lower valve clamp is covered with a lower valve sealing gasket along its axial length. The upper valve sealing gasket has an integrally formed strip structure on both sides of its open end. The strip structure has an arc-shaped lip extending outward, and the bottom is arc-shaped with a circular groove. The lower valve clamp has a groove end formed at its open end that is adapted to and fits into the strip structure.

[0010] Furthermore, the inner diameters of the upper and lower sealing gaskets are consistent with the outer diameter of the outlet port of the electromagnetic pulse valve and the outer diameter of the inlet port of the blowpipe. When the upper and lower valve clamps are engaged to form a tubular structure, the upper and lower sealing gaskets together form a tubular sealing layer, which tightly covers the outside of the outlet port of the electromagnetic pulse valve and the inlet port of the blowpipe.

[0011] Furthermore, both ends of the inner walls of the upper and lower valve clamps are provided with stepped protrusions. The outer walls of the upper and lower valve sealing pads are integrally formed with slots for fitting the stepped protrusions at positions corresponding to the stepped protrusions. The inner walls of the upper and lower valve clamps are provided with raised spherical structures distributed along their axial direction. The outer walls of the upper and lower valve sealing pads are provided with spherical structures that interlock and fit with the raised spherical structures along their axial direction.

[0012] Furthermore, the bottom of the blowpipe is provided with multiple through holes at equal intervals along its axial direction, and the bottom of each through hole is formed with an outward-facing flange structure, the end face of which is perpendicular to the pipe wall of the blowpipe.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. This device utilizes the arc-shaped protrusions and mortises of the upper and lower pipe clamps, along with the axially equidistant pipe clamp fixing parts and the double locking design of double hexagonal nuts. This achieves both the positioning and stable engagement of the pipe clamps, and also resists the vibration caused by the impact of high-pressure airflow, preventing loosening over long-term use. At the same time, the inner diameter of the sealing gasket precisely matches the outer diameter of the pulse valve and the blowpipe opening. Combined with the arc-shaped curved surface fitting and groove interlocking at the joint of the sealing gasket, a double seal is achieved. In addition, the stepped protrusions and spherical structure on the inner wall of the pipe clamp are integrated with the sealing gasket, forming a synergistic protection of mechanical limiting and flexible sealing. This fully covers the joint sealing surface, solving the shortcomings of traditional structures such as easy leakage and unreliable sealing, and improving the airtightness and long-term stability of the connection.

[0014] 2. The detachable design of this device makes installation and operation simple and efficient. During later maintenance or component replacement, the pipe clamp can be separated simply by turning the double hexagonal nuts without damaging the core components. This reduces maintenance difficulty and ensures the reusability of components. In addition, the straight hole of the traditional blowpipe is prone to airflow diffusion and narrowing of the core area, resulting in a large amount of airflow waste. However, the vertical flange structure at the bottom of the blowpipe of this device is equivalent to a short straight guide tube, which can constrain the airflow into a regular bundle, cover the venturi tube inlet, avoid edge airflow waste, and ensure directional and efficient airflow. In addition, the flange structure has a reserved venturi tube installation position, which improves the utilization rate of compressed air and the uniformity and reliability of the dust removal effect compared with the traditional structure.

[0015] The present invention will be explained in detail below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the main structure of this utility model; Figure 2 This is a schematic diagram of the bottom structure of the blowpipe of this utility model; Figure 3 This is a schematic diagram of the upper and lower valve clamps of this utility model. Figure 4 This is a schematic diagram of the upper and lower sealing gaskets of this utility model.

[0017] Numbering on the map: 1. Connecting components; 11. Upper valve clamp; 111. Upper valve sealing gasket; 12. Lower valve clamp; 121. Lower valve sealing gasket; 13. Clamp fixing component; 2. Electromagnetic pulse valve; 3. Blowpipe. Detailed Implementation

[0018] To facilitate understanding of this utility model, a more comprehensive description of the utility model will be given below with reference to the accompanying drawings, which show several embodiments of the utility model. However, the utility model can be implemented in different forms and is not limited to the embodiments described in the text. On the contrary, these embodiments are provided to make the disclosure of the utility model more thorough and comprehensive.

[0019] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0020] Please refer to the appendix carefully. Figure 1-4 A filter bag dust collector blowpipe connection device includes a connecting component 1, an electromagnetic pulse valve 2, and a blowpipe 3. One end of the connecting component 1 is detachably connected to the air outlet of the electromagnetic pulse valve 2, and the other end is detachably connected to the air inlet of the blowpipe 3.

[0021] The connecting component 1 includes an upper valve clamp 11 and a lower valve clamp 12. Both ends of the outer wall of the upper valve clamp 11 and the lower valve clamp 12 are welded with clamp fixing parts 13 along the axial direction. After the upper valve clamp 11 and the lower valve clamp 12 are engaged, they form a tubular structure for accommodating the part where the air outlet of the electromagnetic pulse valve 2 connects with the air inlet of the blowpipe 3.

[0022] In this embodiment, as Figure 3 and Figure 4 As shown, the pipe clamp fixing parts 13 are distributed at equal intervals along the axial direction of the upper pipe clamp 11 and the lower pipe clamp 12, and the pipe clamp fixing parts 13 of the upper pipe clamp 11 and the lower pipe clamp 12 correspond one-to-one in the vertical direction and fit together. Each pipe clamp fixing part 13 is provided with a mounting hole that runs through it in the vertical direction. The upper pipe clamp 11 and the lower pipe clamp 12 are detachably connected by screws that pass through the mounting holes and double hexagonal nuts that are threaded to both ends of the screws.

[0023] With the above structure, the pipe clamp fastener 13, combined with the detachable connection structure of the screw and double hexagonal nut passing through the through mounting hole, can not only achieve a stable engagement of the upper pipe clamp 11 and the lower pipe clamp 12 through the axial locking force of the screw, but also enhance the anti-loosening performance and maintain the long-term stability of the connection through the double locking of the double hexagonal nut. At the same time, this detachable feature makes the installation operation simple. When maintaining or replacing parts later, the pipe clamp can be separated by simply turning the nut, without damaging the core components such as the pipe clamp and sealing gasket, which reduces the difficulty of maintenance.

[0024] In this embodiment, as Figure 3and Figure 4 As shown, the upper valve clamp 11 has outwardly protruding arc-shaped tenon structures on both sides of its open end. The surface of the arc-shaped tenon is a continuous and smooth slope from the edge to the center. The lower valve clamp 12 has arc-shaped recessed tenons on both sides of its open end that are adapted to the arc-shaped tenon structure. The upper valve clamp 11 and the lower valve clamp 12 form a tenon and mortise structure that interlocks with each other through their corresponding ends.

[0025] The inner wall of the upper valve clamp 11 is covered with an upper valve sealing gasket 111 along its axial length, and the inner wall of the lower valve clamp 12 is covered with a lower valve sealing gasket 121 along its axial length. The upper valve sealing gasket 111 has an integrally formed strip structure on both sides of its open end. The strip structure has an arc-shaped lip extending outward, and the bottom is arc-shaped with a circular groove. The lower valve sealing gasket 121 has a groove end that is adapted to fit the strip structure.

[0026] Through the above structure, the upper petal sealing gasket 111 and the lower petal sealing gasket 121 adopt an eccentric structure, and together with their interlocking structure, they not only increase the sealing contact area through the mutual interlocking of the arc-shaped curved surfaces, but also form a double seal through the interlocking of the groove and the slot, effectively preventing compressed air from leaking from the sealing gasket joint gap. Combined with the interlocking structure of the upper petal clamp 11 and the lower petal clamp 12, the sealing layer can be made to contact more tightly, forming a double sealing structure. Both are made of fluororubber, which is oil-resistant and chemically resistant, with a Shore hardness of 60-70HA and a thickness of 3-5mm. Its good resistance to deformation can prevent the sealing gasket joint from loosening or forming gaps even under the impact of high-pressure airflow, improving the overall airtightness and structural stability of the tubular sealing layer, and ensuring that compressed air is delivered to the blowpipe 3 with sufficient pressure, laying the necessary conditions for the subsequent dust removal effect.

[0027] In this embodiment, as Figure 1 and Figure 2 As shown, the inner diameters of the upper flap sealing gasket 111 and the lower flap sealing gasket 121 are consistent with the outer diameter of the outlet port of the electromagnetic pulse valve 2 and the outer diameter of the inlet port of the blowpipe 3. When the upper flap clamp 11 and the lower flap clamp 12 are engaged to form a tubular structure, the upper flap sealing gasket 111 and the lower flap sealing gasket 121 together form a tubular sealing layer, which tightly covers the outside of the outlet port of the electromagnetic pulse valve 2 and the inlet port of the blowpipe 3.

[0028] With the above structure, the traditional electromagnetic pulse valve 2 and the blow pipe 3 are usually connected by a rigid short pipe with a flange or an ordinary rubber hose. However, the pipe diameter and the pipe opening are poorly matched, and the pipe is prone to displacement or deformation due to airflow impact, resulting in local gap leakage and insufficient impact resistance. In contrast, the inner diameter of the upper flap sealing gasket 111 and the lower flap sealing gasket 121 matches the outer diameter of the air outlet of the electromagnetic pulse valve 2 and the air inlet of the blow pipe 3. The tubular sealing layer formed after the two are joined can achieve a tight and gapless covering with the outer wall of the pipe opening, fully covering the sealing surface of the docking part, effectively blocking compressed air leakage. Combined with the rigid structure of the upper flap clamp 11 and the lower flap clamp 12 made of external metal, it can form a uniform radial clamping force on the sealing layer, further compacting the fit between the sealing gasket and the outer wall of the pipe opening, avoiding local loosening or warping of the sealing layer under the impact of high-pressure airflow. At the same time, the high strength of the metal material can provide stable support for the docking part, constrain the relative position of the electromagnetic pulse valve 2 and the blow pipe 3, and prevent overall displacement caused by airflow impact.

[0029] In this embodiment, as Figure 3 and Figure 4 As shown, both ends of the inner walls of the upper valve clamp 11 and the lower valve clamp 12 are provided with stepped protrusions. The outer walls of the upper valve sealing gasket 111 and the lower valve sealing gasket 121 are integrally formed with slots for fitting the stepped protrusions at the corresponding positions. The inner walls of the upper valve clamp 11 and the lower valve clamp 12 are provided with raised spherical structures along their axial direction. The outer walls of the upper valve sealing gasket 111 and the lower valve sealing gasket 121 are provided with spherical structures that interlock and fit with the raised spherical structures along their axial direction.

[0030] Through the above structure, the stepped protrusions on the inner walls of the upper and lower valve clamps 11 and 12 fit into the corresponding grooves on the outer walls of the sealing gaskets, and the spherical protrusions on the inner walls of the clamps fit into the corresponding spherical structures on the outer walls of the sealing gaskets. This enables the positioning and integrated fitting of the sealing gaskets and the clamps, ensuring the installation accuracy of the sealing gaskets within the clamps. It also prevents relative movement between the sealing gaskets and the inner walls of the clamps under conditions such as clamp opening and closing and airflow impact, maintaining a tight fit between the sealing surfaces and improving the stability of the sealing structure and the long-term sealing reliability.

[0031] In this embodiment, as Figure 2 As shown, the bottom of the blowpipe 3 has multiple through holes at equal intervals along its axial direction. The bottom of each through hole is formed with an outward-facing flange structure, and the end face of the flange structure is perpendicular to the pipe wall of the blowpipe 3.

[0032] With the above structure, the flanged structure (3-5mm in height) is equivalent to adding a short straight guide tube to the bottom through hole of the blowpipe 3 compared to the traditional straight hole. When the airflow passes through the flange, the airflow at the edge is blocked by the inner wall of the flange and cannot spread to both sides. It can only flow vertically downward along the axis of the flange, so that the airflow forms a more regular bundle when it leaves the blowpipe 3. Its core area diameter can cover the venturi tube inlet, avoiding the waste of airflow at the edge of the straight hole.

[0033] The specific operating procedure of this utility is as follows: It should be noted that the length of the blow pipe 3 and the number of bottom through holes are matched and set according to the number of filter bags to be cleaned. The gap between adjacent through holes is adapted to the arrangement spacing of the filter bags. The outward flange at the bottom of each through hole can be used to adapt and install a venturi tube later to optimize the concentration and impact of the airflow. The other end of the electromagnetic pulse valve 2 is connected to the compressed air storage tank.

[0034] During installation, first precisely align the outlet of the electromagnetic pulse valve 2 with the inlet of the blowpipe 3, ensuring the mating parts are in the preset assembly position. Then, slip the lower valve clamp 12 onto the mating part from below, ensuring the inner wall of the lower valve sealing gasket 121 fits against the outer wall of the outlet of the electromagnetic pulse valve 2 and the inlet of the blowpipe 3. Next, fasten the upper valve clamp 11 onto the lower valve clamp 12 from above the mating part. During the fastening process, ensure that the arc-shaped tenon structure on both sides of the opening end of the upper valve clamp 11 engages with the arc-shaped mortise structure on both sides of the opening end of the lower valve clamp 12 to form a tenon-mortise limit. At the same time, the strip-shaped arc-shaped lip structure on both sides of the opening end of the upper valve sealing gasket 111 corresponds to and fits into the matching groove at the opening end of the lower valve sealing gasket 121, so that the upper valve sealing gasket 111 and the lower valve sealing gasket 121 together form a complete tubular sealing layer, tightly covering the outside of the mating part.

[0035] After fastening, the pipe clamp fixing parts 13, which are equidistantly distributed along the axial direction on the outer walls of the upper and lower pipe clamps 11 and 12, correspond one-to-one and fit together. The screws are inserted into the through mounting holes of the corresponding pipe clamp fixing parts 13, and double hexagonal nuts are threaded to both ends of the screws and gradually tightened. Through the abutment of the nuts and the pipe clamp fixing parts 13, the upper and lower pipe clamps 11 and 12 are stably matched to form a complete tubular structure. The elastic deformation of the upper and lower sealing gaskets 111 and 121 and the interlocking effect of the spherical structure preset on the inner wall of the pipe clamp are used to achieve reliable sealing and fixing of the part where the air outlet of the electromagnetic pulse valve 2 and the air inlet of the blowpipe 3 are connected, thus completing the overall assembly.

[0036] During use, after the electromagnetic pulse valve 2 is opened, compressed air enters the sealed channel after docking through its outlet end, then flows into the inside of the blowpipe 3, and finally is blown directionally to the corresponding filter bag through the venturi tube installed at the bottom through the through hole, so as to achieve efficient dust removal operation.

[0037] The present invention has been described above by way of example in conjunction with the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvement made by adopting the inventive concept and technical solution of the present invention, or the direct application of the inventive concept and technical solution of the present invention to other occasions without modification, shall be within the protection scope of the present invention.

Claims

1. A filter bag dust collector blowpipe connection device, comprising a connecting component (1), an electromagnetic pulse valve (2), and a blowpipe (3), characterized in that: One end of the connecting component (1) is detachably connected to the air outlet of the electromagnetic pulse valve (2), and the other end is detachably connected to the air inlet of the blowpipe (3). The connecting component (1) includes an upper valve clamp (11) and a lower valve clamp (12). The upper valve clamp (11) and the lower valve clamp (12) are both welded with clamp fixing parts (13) at both ends along the axial direction on the outer wall of the upper valve clamp (11) and the lower valve clamp (12). After the upper valve clamp (11) and the lower valve clamp (12) are engaged, they form a tubular structure for accommodating the part where the air outlet of the electromagnetic pulse valve (2) and the air inlet of the blow pipe (3) are connected.

2. The filter bag dust collector blowpipe connection device according to claim 1, characterized in that: The pipe clamp fixing parts (13) are distributed at equal intervals along the axial direction of the upper valve pipe clamp (11) and the lower valve pipe clamp (12). The pipe clamp fixing parts (13) of the upper valve pipe clamp (11) and the pipe clamp fixing parts (13) of the lower valve pipe clamp (12) correspond one-to-one in the vertical direction and fit together. Each of the pipe clamp fixing parts (13) is provided with a mounting hole that runs through it in the vertical direction. The upper valve pipe clamp (11) and the lower valve pipe clamp (12) are detachably connected by screws that pass through the mounting holes and double hexagonal nuts that are threaded to both ends of the screws.

3. The filter bag dust collector blowpipe connection device according to claim 1, characterized in that: The upper lobe clamp (11) has outwardly protruding arc-shaped tenon structures on both sides of its open end. The surface of the arc-shaped tenon is a continuous and smooth slope from the edge to the center. The lower lobe clamp (12) has arc-shaped recessed tenon structures on both sides of its open end that are adapted to the arc-shaped tenon structure. The upper lobe clamp (11) and the lower lobe clamp (12) form a tenon and mortise structure that interlocks with each other through their corresponding ends.

4. The filter bag dust collector blowpipe connection device according to claim 1, characterized in that: The inner wall of the upper valve clamp (11) is covered with an upper valve sealing gasket (111) along its axial length, and the inner wall of the lower valve clamp (12) is covered with a lower valve sealing gasket (121) along its axial length. The upper valve sealing gasket (111) has an integrally formed strip structure on both sides of its open end. The strip structure has an arc-shaped lip extending outward, and the bottom is arc-shaped with a circular groove. The lower valve sealing gasket (121) has a groove end that is adapted to and fits the strip structure.

5. The filter bag dust collector blowpipe connection device according to claim 4, characterized in that: The inner diameters of the upper valve sealing gasket (111) and the lower valve sealing gasket (121) are consistent with the outer diameter of the outlet port of the electromagnetic pulse valve (2) and the outer diameter of the inlet port of the blow pipe (3). When the upper valve clamp (11) and the lower valve clamp (12) are joined to form a tubular structure, the upper valve sealing gasket (111) and the lower valve sealing gasket (121) together form a tubular sealing layer, which tightly covers the outside of the outlet port of the electromagnetic pulse valve (2) and the inlet port of the blow pipe (3).

6. The filter bag dust collector blowpipe connection device according to claim 4, characterized in that: Both ends of the inner walls of the upper valve clamp (11) and the lower valve clamp (12) are provided with stepped protrusions. The outer walls of the upper valve sealing gasket (111) and the lower valve sealing gasket (121) are integrally formed with slots for fitting the stepped protrusions at the positions corresponding to the stepped protrusions. The inner walls of the upper valve clamp (11) and the lower valve clamp (12) are provided with raised spherical structures along their axial circumferential direction. The outer walls of the upper valve sealing gasket (111) and the lower valve sealing gasket (121) are provided with spherical structures that interlock and fit with the raised spherical structures along their axial circumferential direction.

7. The filter bag dust collector blowpipe connection device according to claim 1, characterized in that: The bottom of the blowpipe (3) is provided with multiple through holes at equal intervals along its axial direction. The bottom of each through hole is formed with an outward-facing flange structure, and the end face of the flange structure is perpendicular to the pipe wall of the blowpipe (3).

Images