Annular jet device
By designing an annular jet injector, the problem of insufficient jet injector suction capacity was solved, enabling rapid dissolution and high-precision control of urea solution, and reducing equipment wear and operating costs.
Patent Information
- Application Number
- CN202520387272.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-06
- Publication Date
- 2026-01-30
- Estimated Expiration
- 2035-03-06
AI Technical Summary
The existing jet-type urea solution preparation system has insufficient jet suction capacity, resulting in poor urea particle dissolution, easy clogging of the feed pipe, short service life, and low solution concentration accuracy.
The device employs an annular jet injector with a ring-shaped nozzle and a contraction chamber structure. It utilizes a high-speed annular jet to create a strong entrainment effect, thereby improving the suction capacity. The wear-resistant layer protects the inner wall, ensuring that the urea particles are in full contact with the annular water curtain, achieving rapid dissolution and precise control.
It significantly improves the preparation efficiency and concentration accuracy of urea solution, reduces the risk of clogging, extends equipment lifespan, and lowers footprint and operating costs.
Smart Images
Figure CN223846677U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the field of urea solution preparation, specifically, relate to a ring jet device. BACKGROUND
[0002] The traditional urea solution preparation system generally adopts manual feeding, mechanical stirring and steam heating to prepare urea solution, the manual feeding speed is slow, the solution concentration error of the prepared solution is large, the preparation system occupies a large area, the energy consumption level is also high, and the labor cost is also high.
[0003] The jet flow type urea solution preparation system is a new type of urea solution preparation technology with fast preparation speed, accurate solution concentration, small area occupation and low operation cost. The core equipment is a jet device, which is a device that can generate solution directly at the outlet of the jet device by high-speed liquid jet, high-vacuum negative pressure and rapid mixing of particles and liquid phase.
[0004] The jet device of the existing jet flow type urea solution preparation system adopts a Venturi jet device, the water jet is located in the center of the jet device channel, and the urea particles are located outside the water jet. A high-speed columnar water jet in the center forms a vacuum negative pressure, but the suction capacity is generally poor, and the urea particle dissolution effect is poor. In the actual operation process, the feeding pipe is easily blocked due to the general suction force, which causes the device to interrupt operation. The poor dissolution effect leads to low concentration precision of the prepared solution, and the advantage is not great compared with the traditional stirring type solution preparation. In addition, since the urea particles are located outside the water jet, the urea particles directly contact the inner wall of the jet device, which causes serious wear and shortens the service life of the jet device. The channel is easily blocked and difficult to clean. UTILITY MODEL CONTENTS
[0005] The utility model aims at providing a ring jet device to solve the problems in the background art.
[0006] To solve the above technical problems, the utility model adopts the following technical scheme.
[0007] The utility model provides a ring jet device, which comprises a main body and a suction pipe penetrating in the main body, the main body comprises a contraction member, the contraction member comprises a contraction chamber, the inner diameter of the contraction chamber gradually decreases from the inlet to the outlet, the discharge end of the suction pipe is located in the contraction chamber, the end of the discharge end and the inner wall of the contraction chamber have a gap and form a nozzle in the form of a ring, and the inner wall of the suction pipe is provided with a wear-resistant layer.
[0008] In some embodiments of the application, the discharge end is close to the outlet of the contraction chamber.
[0009] The main body further comprises a throat pipe.
[0010] The outlet of the contraction chamber and the inlet of the throat are connected, and the contraction member and the throat are detachably connected.
[0011] In some embodiments of the present application, the contraction member further comprises an end flange connected to the contraction chamber.
[0012] The contraction member is detachably connected to the throat through the end flange.
[0013] In some embodiments of the present application, the main body further comprises a diffusion pipe.
[0014] The inner diameter of the diffusion pipe gradually increases from the inlet to the outlet.
[0015] The inlet of the diffusion pipe and the outlet of the throat are connected, and the diffusion pipe and the throat are detachably connected.
[0016] In some embodiments of the present application, the main body further comprises a flange joint.
[0017] The diffusion pipe is detachably connected to the throat through the flange joint.
[0018] In some embodiments of the present application, the main body further comprises an outlet pipe.
[0019] The inlet of the outlet pipe and the outlet of the diffusion pipe are connected.
[0020] The inner diameter of the throat from the inlet to the outlet is equal, and the length of the throat is 3-10 times the outer diameter of the throat.
[0021] The inner diameter of the outlet pipe from the inlet to the outlet is equal, and the length of the outlet pipe is 3-10 times the outer diameter of the outlet pipe.
[0022] The inclination angle of the inner wall of the diffusion pipe relative to the axis of the diffusion pipe is 8-15°.
[0023] In some embodiments of the present application, the outer wall of the discharge end is provided with a wear-resistant layer; and / or, the inner wall of the contraction chamber is provided with a wear-resistant layer.
[0024] The wear-resistant layer is silicon carbide, tungsten carbide, chromium carbide or metal ceramic.
[0025] In some embodiments of the present application, the gap width of the nozzle is 0.5-5mm.
[0026] In some embodiments of the present application, the main body further comprises an elbow pipe.
[0027] The outlet of the elbow pipe and the inlet of the contraction member are connected.
[0028] The suction pipe is provided in the side wall of the outer arc of the elbow pipe and extends into the elbow pipe and the contraction member.
[0029] In some embodiments of the present application, the contraction member further comprises a mounting portion connected to the contraction chamber;
[0030] A stepped groove is provided in the mounting portion;
[0031] The elbow pipe is provided in the stepped groove and abuts against the groove bottom of the stepped groove.
[0032] From the above technical solution, the embodiments of the present application have at least the following advantages and positive effects:
[0033] In the annular jet device, the inlet of the suction pipe is placed in the urea particle bag, the hot water for preparing urea enters between the main body and the suction pipe, the flow rate gradually increases when passing through the contraction chamber, and the high-speed annular jet is formed at the annular nozzle outlet, so that the strong entrainment effect is formed, and the suction capacity is improved. The suction force can directly suck the urea particles into the suction pipe, and the suction capacity of the annular jet device can directly suck the urea particles for feeding, which greatly reduces the urea carrying work. Since the suction capacity of the nozzle is stronger, the channel blockage can be avoided.
[0034] After the urea particles are sucked into the main body and mixed with the hot water, the inner diameter of the contraction chamber gradually decreases, the hot water collides with the inner wall of the contraction chamber during the process of passing through the contraction chamber, the annular water curtain is generated at the annular nozzle outlet, the contact area between the urea particles and the annular water curtain is increased, the urea particles can be completely dissolved by the water curtain, the rapid dissolution is realized, the mixing effect is improved, and the precise control of the solution concentration is facilitated.
[0035] The urea particles flowing in the suction pipe are easy to cause abrasion to the inner wall of the suction pipe, and the wear-resistant layer provided on the inner wall of the suction pipe can effectively prolong the service life of the annular jet device. BRIEF DESCRIPTION OF DRAWINGS
[0036] The various objects, features and advantages of the present application will become more apparent from the following detailed description of preferred embodiments of the present application, considered in conjunction with the accompanying drawings. The drawings are not necessarily to scale, the emphasis instead being placed upon illustrating the principles of the present application. In the drawings, like reference numerals refer to like parts throughout the several views. Among the other things, the following drawings show:
[0037] Figure 1 is a structural schematic view of an annular jet device according to an exemplary embodiment.
[0038] The reference signs are explained as follows: 1, main body; 11, contraction piece; 111, contraction chamber; 112, end flange; 113, mounting portion; 12, throat pipe; 13, diffusion pipe; 14, flange joint; 15, outlet pipe; 16, elbow pipe; 17, mounting flange; 100, nozzle; 2, suction pipe; 3, wear-resistant layer. DETAILED DESCRIPTION
[0039] While the present application can be susceptible to embodiment in different forms, only some of the specific embodiments are shown and will be described in detail in the drawings and in the present specification, while it should be understood that the present specification should be considered as a demonstrative explanation of the principles of the present application, and not as a limitation of the present application to what is described herein.
[0040] Thus, one feature indicated in the present specification will be used to explain one feature of one embodiment of the present application, and not to imply that every embodiment of the present application must have the explained feature. In addition, it should be noted that the present specification describes many features. Although certain features can be combined together to show possible system designs, these features can also be used in other combinations not explicitly described. Thus, unless otherwise indicated, the described combinations are not intended to be limiting.
[0041] In the embodiments shown in the drawings, the indications of direction, such as up, down, left, right, front and back, are used to explain the structure and movement of the various elements of the present application, and are not absolute but relative. These indications are appropriate when the elements are in the position shown in the drawings. If the position of the elements changes, the indications of direction also change accordingly.
[0042] Please refer to Figure 1 , the annular fluidic device to the figure annular fluidic device, the annular fluidic device provided by an embodiment of the present application includes a main body 1 and a suction pipe 2 penetrating in the main body 1, the main body 1 includes a contraction piece 11, the contraction piece 11 includes a contraction chamber 111, the inner diameter of the contraction chamber 111 gradually reduces from the inlet to the outlet, the discharge end of the suction pipe 2 is located in the contraction chamber 111, the gap between the end of the discharge end and the inner wall of the contraction chamber 111 forms a nozzle 100 in the form of a ring, and the inner wall of the discharge end is provided with a wear-resistant layer 3.
[0043] For example, to prepare a urea solution, the inlet of the suction pipe 2 is placed in a bag of urea particles, hot water for preparing urea is introduced between the main body 1 and the suction pipe 2, and the flow rate gradually increases when passing through the contraction chamber 111, forming a high-speed annular jet at the outlet of the annular nozzle 100, thereby forming a strong entraining effect, improving the suction capacity, and making the suction negative pressure strong. Using this suction force, the urea particles can be directly sucked into the suction pipe 2, and the suction capacity of the annular jet device can directly suck the urea particles for feeding, greatly reducing the urea handling work. Because the suction capacity of the nozzle 100 is stronger, it can avoid channel blockage.
[0044] After the urea particles are sucked into the main body 1, they are mixed with hot water. Because the inner diameter of the contraction chamber 111 gradually decreases, the hot water collides with the inner wall of the contraction chamber 111 when passing through the contraction chamber 111, forming a central converging annular water curtain at the outlet of the annular nozzle 100. The contact area between the urea particles and the annular water curtain is increased, the water curtain can make the urea particles dissolve more completely, achieve rapid dissolution, and improve the mixing effect, which is beneficial to precise control of the solution concentration.
[0045] The flow of urea particles in the suction pipe 2 can easily cause wear to the inner wall of the suction pipe 2. By providing a wear-resistant layer 3 on the inner wall of the suction pipe 2, the service life of the annular jet device can be effectively improved. Of course, the wear-resistant layer 3 can also be provided only on the inner wall of the discharge end, where the flow rate of the urea particles is high, and the wear is more serious.
[0046] The annular jet device replaces the traditional manual feeding and mechanical stirring and dissolving device, and can greatly reduce the land occupation, investment cost, and operation energy consumption of the urea solution preparation system.
[0047] Industrial urea particles have a wide particle size distribution, with coarse and fine particles. A low suction negative pressure can result in a low flow rate in the suction pipe 2, and large-diameter urea particles can easily accumulate in the suction pipe 2, eventually causing pipe blockage.
[0048] The gap width of the nozzle 100 is designed to be 0.5mm-5mm. By reducing the size of the annular nozzle 100, the jet flow rate is significantly improved, which can bring greater air suction capacity, increase the conveying air flow rate, slow down the settlement of urea particles in the suction pipe 2, ensure smooth feeding of urea particles, and effectively solve the problem of feeding blockage.
[0049] At the same time, by greatly reducing the size of the annular nozzle 100, the annular water is more easily and quickly broken into particles after being sprayed out of the nozzle 100, greatly increasing the surface area of the contact between water and urea particles, and improving the dissolution effect of the urea particles. This solves the problem of poor dissolution effect of urea particles due to the small contact area between water and urea particles.
[0050] Specifically, the liquid phase nozzle 100 of the annular fluidic device is circular ring-shaped, the water jet is annular, and the suction channel in the suction pipe 2 is located in the center. The annular water jet is wrapped outside the suctioned urea particles, and the urea particles do not directly contact the inner wall of the main body 1 after entering the jet chamber inside the main body 1. Therefore, the problem of wear caused by particle friction is obviously alleviated.
[0051] The discharge end of the suction pipe 2 is close to the outlet of the contraction chamber 111. The main body 1 further comprises a throat pipe 12. The outlet of the contraction chamber 111 and the inlet of the throat pipe 12 are in communication, and the contraction member 11 and the throat pipe 12 are detachably connected.
[0052] After the urea particles are sucked into the annular fluidic device, they are quickly dissolved and mixed with hot water in the throat pipe 12. The throat pipe 12 can have a relatively long length to ensure that the urea particles and hot water can be fully mixed during the process of passing through the throat pipe 12. In this embodiment, the inner diameter of the throat pipe 12 in the direction from the inlet to the outlet is equal, and the length of the throat pipe 12 is 3-10 times the outer diameter of the throat pipe 12, which increases the dissolution and mixing time and ensures the complete dissolution of the urea particles.
[0053] When the nozzle 100 is blocked, the throat pipe 12 can be detached. Based on the design that the discharge end of the suction pipe 2 is close to the outlet of the contraction chamber 111, the nozzle 100 is close to the outlet of the contraction chamber 111, which facilitates the cleaning of the nozzle 100.
[0054] The contraction member 11 further comprises an end flange 112 connected to the contraction chamber 111. The contraction member 11 is detachably connected to the throat pipe 12 through the end flange 112. Through the end flange 112, the detachable installation between the contraction member 11 and the throat pipe 12 is facilitated. In other embodiments, the contraction member 11 and the throat pipe 12 can also be detachably connected through other forms of pipe joints.
[0055] The main body 1 further comprises a diffusion pipe 13. The inner diameter of the diffusion pipe 13 in the direction from the inlet to the outlet gradually increases. The inlet of the diffusion pipe 13 and the outlet of the throat pipe 12 are in communication, and the diffusion pipe 13 and the throat pipe 12 are detachably connected.
[0056] After the urea particles and hot water are mixed in the throat pipe 12, they can enter the diffusion pipe 13 for further mixing. By gradually increasing the inner diameter of the diffusion pipe in the direction from the inlet to the outlet, a backflow vortex is formed near the outlet of the diffusion pipe 13, which accelerates the dissolution of the urea particles and improves the dissolution effect. In this embodiment, the inclination angle of the inner wall of the diffusion pipe 13 relative to the axis of the diffusion pipe 13 is 8°-15°.
[0057] When the nozzle 100 is blocked, the one end of the throat pipe 12 is detachably connected with the contraction piece 11, and the other end is detachably connected with the diffuser pipe 13, so that the flange bolts at both ends of the throat pipe 12 can be conveniently disassembled, and then the throat pipe 12 can be taken out for maintenance and dredging of the nozzle 100, without the need to disassemble the entire annular jet device. The maintenance is convenient, and the problem of difficult maintenance of the existing jet device is effectively solved. Especially in the case that the gap between the annular nozzles 100 is very small, insoluble impurities in the water may be blocked at the nozzle 100, resulting in a decrease in the performance of the annular jet device and affecting the normal operation of the equipment.
[0058] The main body 1 further comprises a flange joint 14, and the diffuser pipe 13 is detachably connected with the throat pipe 12 through the flange joint 14. Through the flange joint 14, the detachable installation between the diffuser pipe 13 and the throat pipe 12 is facilitated. In other embodiments, the diffuser pipe 13 and the throat pipe 12 can also be detachably connected through other forms of pipe joints.
[0059] The main body 1 further comprises an outlet pipe 15, and the inlet of the outlet pipe 15 is in communication with the outlet of the diffuser pipe 13. The urea particles and the hot water are further mixed and diffused through the diffuser pipe 13 and then enter the outlet pipe 15, and are further mixed and dissolved in the outlet pipe 15. In this embodiment, the inner diameters of the inlet to the outlet of the outlet pipe 15 are equal, and the length of the outlet pipe 15 is 3-10 times the outer diameter of the outlet pipe 15, so as to increase the dissolution and mixing time and ensure that the urea particles are completely dissolved at the outlet of the outlet pipe 15.
[0060] The outer wall of the discharge end is provided with a wear-resistant layer 3, and the inner wall of the contraction chamber 111 is provided with a wear-resistant layer 3. The outer wall of the discharge end and the inner wall of the contraction chamber 111 are high-flow areas of the hot water, and the wear-resistant layer 3 can avoid wear and tear, significantly improving the service life. The wear-resistant material can be silicon carbide, tungsten carbide, chromium carbide, and metal ceramic, which can effectively reduce the wear of the jet device and significantly prolong the service life of the annular jet device. The thickness of the wear-resistant layer 3 can be 0.1-1 mm.
[0061] The main body 1 further comprises an elbow pipe 16, and the outlet of the elbow pipe 16 is in communication with the inlet of the contraction piece 11. The suction pipe 2 penetrates through the side wall of the outer arc of the elbow pipe 16 into the elbow pipe 16 and the contraction piece 11. The suction pipe 2 and the side wall of the outer arc of the elbow pipe 16 can be connected by welding.
[0062] The flow direction of the hot water is changed under the guidance of the inner wall of the elbow pipe 16, so that the hot water has the same flow direction as the urea particles in the suction pipe 2, which is beneficial to the rapid flow of the mixed urea solution and improves the preparation efficiency.
[0063] The main body 1 further comprises a mounting flange 17 connected to the end of the elbow pipe 16 away from the contraction piece 11, and the mounting flange 17 is used for connecting the elbow pipe 16 to the water inlet pipeline.
[0064] The contraction member 11 further comprises a mounting portion 113 connected to the contraction chamber 111, the mounting portion 113 is provided with a stepped groove, the elbow pipe 16 is arranged in the stepped groove and abuts against the bottom of the stepped groove.
[0065] The stepped groove of the mounting portion 113 facilitates the quick and accurate butt joint of the elbow pipe 16 and the contraction member 11, and improves the installation precision and efficiency.
[0066] In the embodiment, the annular jet device is made of stainless steel, which avoids corrosion and cooperates with the wear-resistant layer 3 to significantly improve the service life of the annular jet device.
[0067] It should be noted that the above embodiment takes the preparation of urea solution as an example for the convenience of description, and of course the annular jet device provided by the present application can also be used in other occasions where materials and liquids need to be dissolved.
[0068] Although the present application has been described with reference to several exemplary embodiments, it is understood that the words that have been used are words of description and illustration, rather than words of limitation. Since the present application can be embodied in various forms without departing from the spirit or essential characteristics thereof, it is understood that the above-described embodiments are not limited to any particular details, but are to be accorded the full scope of the appended claims, and equivalents thereof.
Claims
1. An annular fluidic device, characterized by, The body comprises a contraction member, the contraction member comprises a contraction chamber, the inner diameter of the contraction chamber gradually decreases from the inlet to the outlet, the discharge end of the suction pipe is located in the contraction chamber, the gap between the end of the discharge end and the inner wall of the contraction chamber forms a ring-shaped nozzle, and the inner wall of the suction pipe is provided with a wear-resistant layer.
2. The ring fluidic according to claim 1, wherein, The discharge end is close to the outlet of the contraction chamber. The body further comprises a throat pipe. The outlet of the contraction chamber and the inlet of the throat pipe are communicated, and the contraction member and the throat pipe are detachably connected.
3. The ring fluidic according to claim 2, wherein, The contraction member further comprises an end flange connected to the contraction chamber. The contraction member is detachably connected with the throat pipe through the end flange.
4. The ring fluidic according to claim 3, wherein, The body further comprises a diffusion pipe. The inner diameter of the diffusion pipe gradually increases from the inlet to the outlet. The inlet of the diffusion pipe and the outlet of the throat pipe are communicated, and the diffusion pipe and the throat pipe are detachably connected.
5. The ring fluidic according to claim 4, wherein, The body further comprises a flange joint. The diffusion pipe is detachably connected with the throat pipe through the flange joint.
6. The ring fluidic according to claim 4, wherein, The body further comprises an outlet pipe. The inlet of the outlet pipe and the outlet of the diffusion pipe are communicated. The inner diameter of the throat pipe from the inlet to the outlet is equal, and the length of the throat pipe is 3-10 times the outer diameter of the throat pipe. The inner diameter of the outlet pipe from the inlet to the outlet is equal, and the length of the outlet pipe is 3-10 times the outer diameter of the outlet pipe. The inclination angle of the inner wall of the diffusion pipe relative to the axis of the diffusion pipe is 8-15°.
7. The ring fluidic according to claim 1, wherein, The outer wall of the discharge end is provided with a wear-resistant layer; and / or, the inner wall of the contraction chamber is provided with a wear-resistant layer; The wear-resistant layer is silicon carbide, tungsten carbide, chromium carbide or metal ceramic.
8. The ring fluidic according to claim 1, wherein, The gap width of the nozzle is 0.5-5mm.
9. The ring fluidic according to claim 1, wherein, The body further comprises an elbow pipe. The outlet of the elbow pipe and the inlet of the contraction member are communicated. The suction pipe is provided through the outer arc side wall of the elbow pipe into the elbow pipe and the contraction member.
10. The ring fluidic according to claim 9, wherein, The contraction member further comprises a mounting portion connected to the contraction chamber. The mounting portion is provided with a stepped groove. The elbow pipe is provided in the stepped groove and abuts against the groove bottom of the stepped groove.