Right angle pulse valve

Abstract

The utility model discloses a right angle formula pulse valve, including pulse valve body, pulse valve body includes setting in lower portion's main valve body and setting in upper portion's pilot valve body, the bottom of main valve body is provided with the gas outlet, the outside of main valve body is provided with the gas inlet perpendicular with gas outlet, the bottom of gas outlet is provided with the spiral flow guide component of detachable setting, spiral flow guide component includes the flow guide sleeve that can insert to the inside of gas outlet, the inner wall of flow guide sleeve evenly is provided with a plurality of flow guide piece. The utility model discloses setting spiral flow guide component makes the airflow to rotate, and then will strong viscosity, difficult to fall off's dust thoroughly strips, has promoted the dust cleaning effect.

Description

Technical Field

[0001] This utility model relates to the field of pulse valve technology, specifically a right-angle pulse valve. Background Technology

[0002] Right-angle pulse valves are the core actuators of pulse bag filters, widely used in flue gas dust removal systems in industrial boilers, cement and building materials, metallurgical smelting, chemical and pharmaceutical industries, and waste incineration. Their core function is to control the instantaneous jetting of compressed air through rapid opening and closing, thereby periodically cleaning the filter bags of the dust collector, removing the dust layer attached to the surface of the filter bags, ensuring the air permeability of the filter bags, and maintaining the stable operation and high efficiency of the dust removal system.

[0003] Right-angle pulse valves typically have a simple straight cylindrical outlet channel. When the pulse valve actuates, the gas ejected from the outlet is a direct current flow. While this flow pattern offers high initial axial velocity and impact force, it also suffers from the following technical drawbacks: the radial diffusion capability of the direct current flow is poor, limiting its entrainment and driving effect (i.e., ejection effect) on the clean air in the clean air chamber behind the blowpipe. This results in the gas actually used for dust removal primarily coming from the compressed air ejected by the pulse valve itself, failing to effectively utilize the surrounding ambient gas and wasting the high-pressure gas source, thus making the dust removal "cost-effectiveness" low. To achieve ideal dust removal results, it is often necessary to increase the blowing pressure or extend the blowing time, which directly leads to increased energy consumption. The force of the direct current flow on the filter bag is mainly a positive impact force, lacking effective shearing force. For dust with high humidity and strong viscosity, this single impact force is insufficient to effectively crack and peel off the caked dust layer, resulting in unsatisfactory dust removal and potentially causing persistently high equipment operating resistance. Utility Model Content

[0004] The purpose of this invention is to provide a right-angle pulse valve that uses a spiral guide assembly to rotate the airflow, thereby completely removing sticky and difficult-to-remove dust and improving the dust removal effect.

[0005] To address the problems of existing technologies, this utility model provides a right-angle pulse valve, including a pulse valve body. The pulse valve body includes a main valve body disposed at the lower part and a pilot valve body disposed at the upper part. An air outlet is provided at the bottom of the main valve body, and an air inlet perpendicular to the air outlet is provided on the outside of the main valve body. A detachable spiral guide assembly is provided at the bottom of the air outlet. The spiral guide assembly includes a guide sleeve that can be inserted into the air outlet, and a plurality of guide plates are evenly disposed on the inner wall of the guide sleeve.

[0006] Preferably, the installation angle of the guide vane is between 30 and 60°, and the cross-sectional shape of the guide vane is airfoil-shaped or arc-shaped.

[0007] Preferably, the number of the guide vanes is 4 to 8, and they are evenly distributed along the circumference.

[0008] Preferably, the top of the guide sleeve is provided with an external thread, and the inside of the air outlet is provided with an internal thread, wherein the internal thread engages with the external thread.

[0009] Preferably, the bottom of the air outlet is provided with an annular groove, a sealing ring is provided between the air outlet and the guide sleeve, and a pressure ring is provided on the guide sleeve. When the guide sleeve is installed at the air outlet, the pressure ring can squeeze the sealing ring. The bottom of the guide sleeve is also provided with a mounting flange, and the mounting flange has mounting holes.

[0010] Preferably, the air inlet has an internal thread, and a diaphragm is provided at the junction of the air inlet and the air outlet. The top of the diaphragm also has a first return spring to reset the diaphragm. The diaphragm has three layers, which are divided into an elastic layer, a reinforcing layer and a buffer layer from top to bottom.

[0011] Preferably, the elastic layer is made of fatigue-resistant polyurethane material, the reinforcing layer is made of stainless steel fiber woven mesh, and the buffer layer is made of honeycomb silicone.

[0012] Preferably, the pilot valve body includes a housing mounted on its top, and a plug that moves up and down is provided inside the pilot valve body. The housing contains a coil, and an iron core assembly is located at the center of the coil. The bottom of the iron core assembly is connected to the plug. The iron core assembly contains a second return spring that resets the plug. The housing has a junction box on its exterior, and the junction box is electrically connected to the coil via a wire. The pilot valve body also has a pilot vent hole that extends into its interior. When the main valve body is closed, the plug can block the pilot vent hole. When the main valve body is opened, the plug separates from the pilot vent hole.

[0013] The advantages of this utility model compared to the prior art are: This application optimizes the dust removal effect by setting a spiral guide assembly at the bottom of the air outlet. The spiral guide assembly consists of a guide sleeve that matches the air outlet and several guide vanes arranged on the inner wall of the guide sleeve. When the gas flows through the guide sleeve, the guide vanes guide the airflow to rotate, transforming the originally linearly flowing gas into a spiral airflow with a combined axial propulsion and circumferential rotational motion. The rotational characteristics of the spiral airflow give it a significantly better radial diffusion capability than traditional straight airflow: after leaving the nozzle, the airflow can expand rapidly and uniformly in the radial direction under the action of rotational inertia, effectively avoiding the problem of insufficient local dust removal of the filter bag caused by uneven airflow diffusion in traditional jet cleaning methods. At the same time, when the rotating airflow acts on the filter bag wall, it will form a periodically changing rotational shear force. This shearing force can specifically disrupt the structural integrity of caking dust layers. For dense dust layers formed due to humidity, stickiness, or long-term accumulation, the rotational shearing force can gradually crack the interface between the dust layer and the filter bag surface through continuous circumferential displacement and radial impact, thereby completely peeling off the sticky and difficult-to-remove dust. This combined mechanism significantly improves the dust removal effect, reduces the impact of residual dust on the air permeability of the filter bag, and helps maintain the long-term efficient operation of the dust collection system. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of a right-angle pulse valve according to this utility model.

[0015] Figure 2 This is an exploded structural diagram of a right-angle pulse valve according to this utility model.

[0016] Figure 3 This is a cross-sectional structural diagram of a right-angle pulse valve according to this utility model.

[0017] Figure 4 This is a three-dimensional structural diagram of the spiral flow guiding component of a right-angle pulse valve according to this utility model.

[0018] The following are the labels in the diagram: 1. Pulse valve body; 11. Main valve body; 111. Air outlet; 112. Air inlet; 113. Diaphragm; 114. First return spring; 12. Pilot valve body; 121. Housing; 122. Coil; 123. Iron core assembly; 124. Plug; 125. Second return spring; 126. Junction box; 127. Pilot exhaust port; 2. Spiral guide assembly; 21. Guide sleeve; 22. Mounting flange; 23. Guide plate; 24. Sealing ring. Detailed Implementation

[0019] To further understand the features, technical means, and specific objectives and functions achieved by this utility model, the following detailed description of this utility model is provided in conjunction with the accompanying drawings and specific embodiments.

[0020] Reference Figures 1-4 As shown, this utility model provides a right-angle pulse valve, including a pulse valve body 1. The pulse valve body 1 includes a main valve body 11 disposed at the lower part and a pilot valve body 12 disposed at the upper part. An air outlet 111 is provided at the bottom of the main valve body 11, and an air inlet 112 perpendicular to the air outlet 111 is provided on the outside of the main valve body 11. A detachable spiral guide assembly 2 is provided at the bottom of the air outlet 111. The spiral guide assembly 2 includes a guide sleeve 21 that can be inserted into the air outlet 111. A plurality of guide vanes 23 are evenly disposed on the inner wall of the guide sleeve 21. The guide vanes 23 are key components for airflow guidance. They are evenly distributed along the inner wall of the guide sleeve 21 and can force the straight airflow to rotate circumferentially, transforming the axially propelled compressed air into a spiral airflow with both axial impact force and circumferential rotation force, providing a structural basis for uniformly covering the filter bag cross-section and peeling off caking dust.

[0021] The installation angle of the guide vane 23 is between 30° and 60°, and the cross-sectional shape of the guide vane 23 is either airfoil-shaped or arc-shaped. The installation angle of the guide vane 23 is designed within an optimized range of 30° to 60°. This angle range can balance the rotation intensity of the airflow and the axial propulsion force, avoiding insufficient rotation effect or excessive airflow resistance caused by an excessively small installation angle. The cross-sectional shape adopts an airfoil-shaped or arc-shaped structure. The airfoil-shaped cross-section can reduce local resistance and vortex loss when the airflow passes through by utilizing aerodynamic principles, while the arc-shaped cross-section can guide the airflow to achieve gradual rotation through a smooth curved surface, reducing energy loss caused by airflow impact. Through the above structural design, the guide vane 23 forces the straight airflow to undergo stable circumferential rotation, transforming the axially propulsed compressed air into a spiral airflow with both axial impact force and circumferential rotation force, providing a key structural foundation for uniformly covering the filter bag cross-section and peeling off caking dust.

[0022] The number of guide vanes 23 is 4 to 8, and they are evenly distributed along the circumference. The design of 4 to 8 vanes strikes a balance between guiding efficiency and flow resistance control. It ensures the stability of airflow rotation through sufficient guiding support points, while avoiding the reduction of the effective cross-sectional area of ​​the flow channel and the increase of airflow kinetic energy loss due to too many vanes.

[0023] The top of the guide sleeve 21 is provided with an external thread, and the inside of the air outlet 111 is provided with an internal thread, which meshes with the external thread. The bottom of the air outlet 111 is also provided with an annular groove. There is a sealing ring 24 between the air outlet 111 and the guide sleeve 21. The guide sleeve 21 is also provided with a pressure ring. When the guide sleeve 21 is installed at the air outlet 111, the pressure ring can squeeze the sealing ring 24. The bottom of the guide sleeve 21 is also provided with a mounting flange 22, and the mounting flange 22 has mounting holes.

[0024] The top of the guide sleeve 21 is provided with an external thread that engages with the internal thread inside the air outlet 111. The threaded connection enables detachable fixing to the air outlet 111, ensuring coaxiality of the assembly to guarantee the airflow path and facilitating the replacement of guide components with different parameters according to working conditions. The guide sleeve 21 is provided with a pressure ring. When assembled with the air outlet 111, the pressure ring can axially compress the sealing ring 24, causing the sealing ring 24 to undergo elastic deformation, effectively blocking airflow leakage from the gap between the guide sleeve 21 and the air outlet 111. The mounting flange 22 integrated at its bottom and the mounting hole on the flange are used to fix the spiral guide component 2 to the external structure such as the blowpipe, ensuring that the blown airflow acts on the filter bag, while enhancing the overall installation stability of the component and avoiding displacement or vibration caused by the impact of high-pressure airflow.

[0025] The air inlet 112 has internal threads, and a diaphragm 113 is provided at the junction of the air inlet 112 and the air outlet 111. The top of the diaphragm 113 also has a first return spring 114 to reset the diaphragm 113. The diaphragm 113 has three layers: an elastic layer, a reinforcing layer, and a buffer layer from top to bottom. The elastic layer is made of fatigue-resistant polyurethane material, the reinforcing layer is a stainless steel fiber woven mesh, and the buffer layer is honeycomb silicone. The elastic layer, made of fatigue-resistant polyurethane material, possesses excellent elastic deformation capability and fatigue resistance. The reinforcing layer, made of stainless steel fiber woven mesh, enhances the overall mechanical strength and tear resistance of the diaphragm 113 through its three-dimensional mesh structure, preventing localized damage to the diaphragm 113 under high-pressure airflow impact, while also restraining excessive deformation of the elastic layer. The buffer layer, made of honeycomb silicone, utilizes the porous buffering characteristics of the honeycomb structure to absorb airflow impact energy, reducing direct impact wear on the sealing surface of the diaphragm 113 when compressed air is instantaneously switched on. Simultaneously, the flexible contact of the silicone improves the sealing performance with the valve body sealing surface.

[0026] The pilot valve body 12 includes a housing 121 mounted on its top. Inside the pilot valve body 12, there is a plug 124 that can move up and down. Inside the housing 121, there is a coil 122, and at the center of the coil 122, there is an iron core assembly 123. The bottom of the iron core assembly 123 is connected to the plug 124. The iron core assembly 123 has a second return spring 125 that resets the plug 124. Outside the housing 121, there is a junction box 126, and the junction box 126 is electrically connected to the coil 122 through a wire. The pilot valve body 12 also has a pilot vent hole 127 that extends into its interior. When the main valve body 11 is closed, the plug 124 can block the pilot vent hole 127. When the main valve body 11 is opened, the plug 124 separates from the pilot vent hole 127.

[0027] When no external control signal is input, the junction box 126 does not supply power to the coil 122, and the coil 122 generates no electromagnetic force. The second return spring 125 pushes the iron core assembly 123 downward by its elastic force, causing the plug 124 to tightly fit against the pilot vent 127. When an external dust cleaning signal is transmitted to the coil 122 through the junction box 126, the coil 122 is energized and generates a strong electromagnetic force. This force overcomes the elastic force of the second return spring 125, attracting the iron core assembly 123 to move upward, thereby causing the plug 124 to separate from the pilot vent 127, and the pilot vent 127 opens. The compressed air in the upper cavity of the diaphragm 113 is quickly discharged through the pilot vent 127, the pressure in the upper cavity drops sharply, while the lower cavity of the diaphragm 113 remains at high pressure, forming an upward instantaneous pressure difference. When the pressure difference overcomes the elastic force of the first return spring 114 and the weight of the diaphragm 113, the diaphragm 113 quickly rises upward, and the air inlet 112 and the air outlet 111 flow channels are connected. The high-pressure compressed air flows along the right-angle flow channel of the main valve body 11 to the air outlet 111.

[0028] The above embodiments only illustrate one or more implementations of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this utility model. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the appended claims.

Claims

1. A right-angle pulse valve, characterized in that, The device includes a pulse valve body (1), which includes a main valve body (11) located at the bottom and a pilot valve body (12) located at the top. The main valve body (11) has an air outlet (111) at its bottom and an air inlet (112) located on the outside of the main valve body (11) perpendicular to the air outlet (111). The bottom of the air outlet (111) is provided with a detachable spiral guide assembly (2). The spiral guide assembly (2) includes a guide sleeve (21) that can be inserted into the air outlet (111). The inner wall of the guide sleeve (21) is uniformly provided with a plurality of guide plates (23).

2. A right-angle pulse valve according to claim 1, characterized in that, The installation angle of the guide vane (23) is between 30 and 60°, and the cross-sectional shape of the guide vane (23) is airfoil-shaped or arc-shaped.

3. A right-angle pulse valve according to claim 2, characterized in that, The number of the guide vanes (23) is 4 to 8, and they are evenly distributed along the circumference.

4. A right-angle pulse valve according to claim 1, characterized in that, The top of the guide sleeve (21) is provided with an external thread, and the inside of the air outlet (111) is provided with an internal thread, which meshes with the external thread.

5. A right-angle pulse valve according to claim 4, characterized in that, The bottom of the air outlet (111) is also provided with an annular groove, and there is a sealing ring (24) between the air outlet (111) and the guide sleeve (21). The guide sleeve (21) is also provided with a pressure ring. When the guide sleeve (21) is installed at the air outlet (111), the pressure ring can squeeze the sealing ring (24). The bottom of the guide sleeve (21) is also provided with a mounting flange (22), and the mounting flange (22) has a mounting hole.

6. A right-angle pulse valve according to claim 1, characterized in that, The air inlet (112) has an internal thread, and a diaphragm (113) is provided at the junction of the air inlet (112) and the air outlet (111). The top of the diaphragm (113) also has a first return spring (114) to reset the diaphragm (113). The diaphragm (113) has three layers, which are divided into an elastic layer, a reinforcing layer and a buffer layer from top to bottom.

7. A right-angle pulse valve according to claim 6, characterized in that, The elastic layer is made of fatigue-resistant polyurethane material, the reinforcing layer is made of stainless steel fiber woven mesh, and the buffer layer is made of honeycomb silicone.

8. A right-angle pulse valve according to claim 1, characterized in that, The pilot valve body (12) includes a housing (121) mounted on its top. Inside the pilot valve body (12) is a plug (124) that moves vertically. Inside the housing (121) is a coil (122), and at the center of the coil (122) is an iron core assembly (123). The bottom of the iron core assembly (123) is connected to the plug (124). The iron core assembly (123) contains a second return spring that resets the plug (124). 125), the outer side of the housing (121) has a junction box (126), and the junction box (126) is electrically connected to the coil (122) through a wire. The pilot valve body (12) is also provided with a pilot exhaust hole (127) that extends into its interior. When the main valve body (11) is closed, the plug (124) can block the pilot exhaust hole (127). When the main valve body (11) is opened, the plug (124) separates from the pilot exhaust hole (127).

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