Anti-blocking and anti-sticking spray dryer

Abstract

The utility model relates to an anti-blocking and anti-sticking spray dryer which comprises a dryer body, an atomizer, a heater, an air delivery pipe, an inflow bin, a spray head and an air blower, the atomizer and the inflow bin are located at the top of the dryer body, the spray head is located in the dryer body, the air blower is located above the heater and connected with the heater, and one end of the air delivery pipe is fixed to the air blower. A guide pipe communicated with the inflow bin is arranged below the atomizer, the guide pipe is detachably connected with the spray head, an upper filter screen is detachably arranged at the bottom of the guide pipe, the machine body comprises an inflow section and a heating section which are detachably connected, the atomizer is located above the inflow section, and the heating section is located below the atomizer. The inflow bin is located above the atomizer, and one end of the air conveying pipe is fixed to the heating section. According to the anti-blocking and anti-sticking spray dryer, the heating section and the inflow section are separated, and then the guide pipe and the spray head are separated, so that the upper filter screen can be cleaned.

Description

Technical Field

[0001] The utility model relates to a spray dryer, in particular to an anti-blocking and anti-sticking spray dryer. Background Art

[0002] Spray dryer is a continuous drying equipment that uses atomization technology to disperse liquid materials into fine droplets and quickly evaporate the water in a hot air flow, thereby drying them into powder or granular products.

[0003] However, in the process of converting liquid materials into powder or granular products, the materials to be dried may contain high concentrations of solid particles, high viscosity, easy crystallization, easy agglomeration and other characteristics. These characteristics may cause the atomized droplets to adhere, accumulate or agglomerate during the drying process, forming blockages and unable to fall into the drying chamber through the nozzle, thus affecting the process of drying the liquid materials into powder or granular products.

[0004] Therefore, how to prevent the nozzle from blocking and sticking has become a problem that needs to be solved urgently by those skilled in the art. Summary of the invention

[0005] In view of the shortcomings of the prior art, the purpose of the utility model is to provide an anti-blocking and anti-sticking spray dryer which can clean the upper filter screen by separating the heating section from the inflow section and then separating the conduit from the nozzle.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: including a machine body, an atomizer, a heater, an air transfer pipe, an inflow bin, a nozzle and a blower, the atomizer and the inflow bin are located at the top of the machine body, the nozzle is located in the machine body, the blower is located above the heater and connected to the heater, one end of the air transfer pipe is fixed to the blower, and the other end is fixed to the machine body, a conduit communicating with the inflow bin is provided below the atomizer, the conduit is detachably connected to the nozzle, an upper filter is detachably provided at the bottom of the conduit, the machine body includes a detachably connected inflow section and a heating section, the atomizer is located above the inflow section, the inflow bin is located above the atomizer, and one end of the air transfer pipe is fixed to the heating section.

[0007] The utility model is further configured as follows: the nozzle comprises a connecting section located below the conduit, the outer periphery of the conduit is provided with an external thread, and the connecting section cooperates with the conduit thread.

[0008] The utility model is further configured as follows: the upper filter screen is provided with a plurality of positioning blocks protruding upward, the conduit is provided with a positioning slot corresponding to each positioning block, each positioning block is provided with a matching slot facing inward, and the conduit is provided with a matching block on each positioning slot.

[0009] The utility model is further configured as follows: a lower filter screen is arranged in the connecting section.

[0010] The utility model is further configured as follows: the heating section is provided with a plurality of limit plugs protruding in the circumferential direction, the inflow section comprises an extension portion, the extension portion is sleeved with the heating section and the bottom is abutted against the transmission pipe, and the extension portion is provided with a limit slot corresponding to each limit plug.

[0011] The utility model is further configured to include an upper sealing ring located in the circumference of the inflow section and a lower sealing ring located on the heating section, wherein the outer circumference of the upper sealing ring is located inside the lower sealing ring.

[0012] The utility model is further configured as follows: the lower sealing ring is configured to expand from bottom to top, and the upper sealing ring is configured to shrink from top to bottom.

[0013] By adopting the above technical scheme, since the liquid droplets dispersed into fine droplets by the atomizer can flow to the nozzle through the conduit, and because the upper filter is detachably installed at the bottom of the conduit, the atomized droplets adhere, accumulate or agglomerate during the drying process, and the formed blockage can be intercepted by the upper filter and will not move toward the nozzle and fall into the heating section. Since the inflow section and the heating section are detachable, and the conduit and the nozzle are detachable, the inflow section and the heating section are disassembled to contact the conduit and the nozzle. At this time, the conduit and the nozzle can be contacted after the conduit is separated from the nozzle, and the upper filter at the bottom of the conduit is removed and the upper filter is cleaned to clean the blockage intercepted by the upper filter, thereby effectively reducing the adhesion of the product and improving the quality of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 It is an assembly diagram of a specific implementation method of the utility model;

[0016] Figure 2 It is an exploded view of the machine body in the utility model;

[0017] Figure 3 is the cross-sectional view of the inflow section;

[0018] Figure 4 This is an exploded view of the nozzle and the conduit;

[0019] Figure 5A three-dimensional diagram of the nozzle;

[0020] Figure 6 for Figure 3 A magnified view of middle;

[0021] Figure 7 for Figure 4 Enlarged view of B.

[0022] In the figure: 1-body, 11-inflow section, 111-extension part, 1111-limiting slot, 12-heating section, 121-limiting plug;

[0023] 2- Atomizer;

[0024] 3- Heater;

[0025] 4-air transmission pipe;

[0026] 5-Inflow bin;

[0027] 6-nozzle, 61-connecting section, 611-lower filter;

[0028] 7- Blower;

[0029] 8-conduit, 81-upper filter, 811-positioning plug, 8111-matching groove, 82-positioning slot, 83-matching plug, 84-external thread;

[0030] 9-upper sealing ring;

[0031] 10-Lower sealing ring. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0033] like Figure 1-Figure 7As shown, the utility model discloses an anti-blocking and anti-sticking spray dryer, including a body 1, an atomizer 2, a heater 3, an air transmission pipe 4, an inflow bin 5, a nozzle 6 and a blower 7. The atomizer 2 and the inflow bin 5 are located at the top of the body 1, the nozzle 6 is located in the body 1, the blower 7 is located above the heater 3 and connected to the heater 3 (this is the prior art, and the connection method is not specifically described here), one end of the air transmission pipe 4 is fixed to the blower 7, and the other end is fixed to the body 1, and the liquid to be dried is passed through the inflow bin 5 through the atomizer. The atomizer 2 is dispersed into fine droplets, which can then fall downward into the machine body 1 through the nozzle 6. Since the blower 7 heats the outflowing wind through the wind transmission and protection pipe, the hot wind passes through the other end of the wind transmission pipe 4 into the machine body 1 to dry the fine droplets and turn them into powder or granular substances to be collected (this is the prior art, which is not specifically drawn and explained in the figure). A conduit 8 is provided below the atomizer 2 and is interconnected with the inflow bin 5. The conduit 8 is detachably connected to the nozzle 6, and an upper filter is detachably provided at the bottom of the conduit 8. 81, the machine body 1 includes a detachably connected inflow section 11 and a heating section 12, the atomizer 2 is located above the inflow section 11, the inflow bin 5 is located above the atomizer 2, and one end of the air transmission pipe 4 is fixed to the heating section 12. Since the liquid droplets dispersed into fine droplets by the atomizer 2 can flow to the nozzle 6 through the conduit 8, and since the upper filter 81 is detachably installed at the bottom of the conduit 8, the atomized droplets are adhered, accumulated or agglomerated during the drying process, and the blockage formed can be blocked by the upper filter 81. The inflow section 11 and the heating section 12 are detachable, and the conduit 8 and the nozzle 6 are detachable. Therefore, the inflow section 11 and the heating section 12 are disassembled to contact the conduit 8 and the nozzle 6. At this time, after the conduit 8 and the nozzle 6 are separated, the upper filter 81 can be contacted, and then the upper filter 81 at the bottom of the conduit 8 is removed and the upper filter 81 is cleaned, and the part of the blockage intercepted by the upper filter 81 is cleaned, thereby effectively reducing the adhesion of the product and improving the quality of the product.

[0034] Among them, the nozzle 6 includes a connecting section 61 located below the conduit 8, and the outer periphery of the conduit 8 is provided with an external thread 84. The connecting section 61 and the conduit 8 are threadedly matched. 1. Threaded matching is a type of detachable connection, so the connection section 61 and the conduit 8 can be installed or removed by relative rotation of the connecting section 61 and the conduit 8; 2. The threaded connection structure is relatively simple, mainly composed of a thread pair, with a large contact area of ​​the mating surface, and the load is transmitted through mechanical engagement and friction between the threads, with high reliability.

[0035] The upper filter screen 81 is provided with a plurality of positioning blocks 811 protruding upward, and the conduit 8 is provided with a positioning slot 82 corresponding to each positioning block 811, and each positioning block 811 is provided with a matching groove 8111 facing inward, and the conduit 8 is provided with a matching block 83 on each positioning slot 82. When the upper filter screen 81 needs to be removed from the conduit 8, a downward force is applied to the upper filter screen 81 so that the matching groove 8111 on each positioning block 811 can pass over the matching block 83 downward. At this time, each positioning block 8 11 is separated from the corresponding positioning slot 82, so that the upper filter 81 can be separated from the conduit 8, and the blockage on the upper filter 81 can be removed and cleaned. After the upper filter 81 is cleaned, when the upper filter 81 is installed upward on the conduit 8, the part of each positioning block 811 located above the corresponding matching groove 8111 needs to forcibly pass over the matching block 83 located in the corresponding positioning slot 82, so as to realize the matching of each matching groove 8111 and the corresponding matching block 83, so as to realize the stable installation of the upper filter 81 and the conduit 8.

[0036] It is also worth noting that since the pressure exerted on the upper filter screen 81 by the fine droplets generated by the atomizer 2 is much smaller than the pressure exerted on the upper filter screen 81 by the liquid flowing in, it will not cause impact on the upper filter screen 81 installed in the conduit 8.

[0037] Preferably, a lower filter screen 611 is provided in the connecting section 61. Since the lower filter screen 611 is located below the upper filter screen 81, the droplets moving from the conduit 8 toward the nozzle 6 will be filtered again through the lower filter screen 611 after passing through the upper filter screen 81 so that the blockage remains above the upper filter screen 81. 1. Double filtration enables progressive fine filtration of the target substance, i.e., the blockage. The primary filter layer, i.e., the upper filter screen 81, usually removes larger particles or impurities that are easy to intercept, and the secondary filter layer, i.e., the lower filter screen 611, further captures finer particles or harmful substances, thereby achieving classification of the blockage and significantly improving the purification and filtration effect. 2. The primary filter layer first intercepts most of the large particle pollutants, reducing the burden on the secondary filter layer, thereby extending the service life of the overall filtration system. 3. Since the blockage is gradually intercepted layer by layer during the double filtration process, the concentration of pollutants passing through each level of the filter element per unit time is reduced, and the filtration resistance is reduced, thereby improving the filtration efficiency of the overall system, ensuring that under the same flow conditions, the treatment medium can be purified more efficiently.

[0038] Among them, the heating section 12 is provided with a plurality of limit plugs 121 protruding circumferentially, and the inflow section 11 includes an extension portion 111, the extension portion 111 is sleeved with the heating section 12 and the bottom is against the transmission tube, and the extension portion 111 is provided with limit slots 1111 corresponding to each limit plug 121, 1. Due to the circumferential arrangement of the limit plugs 121 of the heating section 12, after the extension portion 111 is installed, each limit plug 121 can be inserted into the corresponding limit slot 1111 to achieve the position determination of the heating section 12 and the inflow section 11, so that the two will not move radially and circumferentially without the action of external force; 2. Since the extension portion 111 is sleeved with the heating section 12 and the bottom of the extension portion 111 is against the transmission tube, after the positions of the heating section 12 and the inflow section 11 are determined, the extension portion 111 can indirectly limit the position of the transmission tube.

[0039] It also includes an upper sealing ring 9 located in the circumference of the inflow section 11 and a lower sealing ring 10 located on the heating section 12. The outer circumference of the upper sealing ring 9 is located inside the lower sealing ring 10. After the heating section 12 and the inflow section 11 are assembled, the upper sealing ring 9 in the circumference of the inflow section 11 is located inside the lower sealing ring 10 on the heating section 12. Therefore, after the assembly is completed, due to the arrangement of the upper sealing ring 9 and the lower sealing ring 10, the fine droplets after passing through the atomizer 2 can feel the obstruction of the upper sealing ring 9 and the lower sealing ring 10 and will not flow out through the heating section 12 and the inflow section 11.

[0040] Preferably, the lower sealing ring 10 is flared from bottom to top, and the upper sealing ring 9 is constricted from top to bottom. Since the lower sealing ring 10 is flared and the upper sealing ring 9 is constricted and located inside the lower sealing ring 10, the bottom diameter of the upper sealing ring 9 is the smallest and can be more smoothly installed into the lower sealing ring 10 to achieve the cooperation between the upper sealing ring 9 and the lower sealing ring 10.

[0041] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An anti-blocking and anti-sticking spray dryer, comprising a body, an atomizer, a heater, an air transmission pipe, an inflow bin, a nozzle and a blower, wherein the atomizer and the inflow bin are located on the top of the body, the nozzle is located in the body, the blower is located above the heater and connected to the heater, one end of the air transmission pipe is fixed to the blower, and the other end is fixed to the body, characterized in that: A conduit interconnected with the inflow bin is provided below the atomizer, the conduit is detachably connected to the nozzle, an upper filter is detachably provided at the bottom of the conduit, the machine body comprises a detachably connected inflow section and a heating section, the atomizer is located above the inflow section, the inflow bin is located above the atomizer, and one end of the air transmission pipe is fixed to the heating section.

2. The anti-blocking and anti-sticking spray dryer according to claim 1, characterized in that: The nozzle comprises a connecting section located below the conduit, the outer periphery of the conduit is provided with an external thread, and the connecting section is matched with the conduit thread.

3. The anti-blocking and anti-sticking spray dryer according to claim 1, characterized in that: The upper filter screen is provided with a plurality of positioning blocks protruding upward, the conduit is provided with a positioning slot corresponding to each positioning block, each positioning block is provided with a matching slot facing inward, and the conduit is provided with a matching block on each positioning slot.

4. The anti-blocking and anti-sticking spray dryer according to claim 2, characterized in that: A lower filter screen is arranged in the connecting section.

5. The anti-blocking and anti-sticking spray dryer according to claim 1, characterized in that: The heating section is provided with a plurality of limit plugs protruding in the circumferential direction. The inflow section comprises an extension portion. The extension portion is sleeved with the heating section and the bottom thereof abuts against the transmission pipe. The extension portion is provided with a limit slot corresponding to each limit plug.

6. The anti-blocking and anti-sticking spray dryer according to claim 5, characterized in that: It also includes an upper sealing ring located in the circumference of the inflow section and a lower sealing ring located on the heating section, wherein the outer circumference of the upper sealing ring is located inside the lower sealing ring.

7. The anti-blocking and anti-sticking spray dryer according to claim 6, characterized in that: The lower sealing ring is arranged in an expanded manner from bottom to top, and the upper sealing ring is arranged in a contracted manner from top to bottom.

Images