Detachable adjusting ejector

Abstract

The utility model discloses a detachable adjusting ejector which comprises an ejection pipe, a throat pipe, a feeding tee joint, an air nozzle and an air conveying pipe, a top end opening of the feeding tee joint is a feeding opening, a port on one side of the feeding tee joint is detachably connected with the throat pipe and the ejection pipe in sequence from near to far, the small-caliber end of the throat pipe extends into the ejection pipe, and the air nozzle is arranged on the air conveying pipe. An air nozzle and an air conveying pipe are sequentially and detachably connected to a port in the other side of the feeding tee joint from near to far, the small-caliber end of the air nozzle extends into the feeding tee joint, and the air nozzle, the throat pipe, the air conveying pipe and the injection pipe are all designed to be independent bodies. The air nozzle for controlling the negative pressure can be independently detached and adjusted to obtain the optimal material suction effect; and the throat pipe for controlling the mixing degree can be detached and adjusted, so that material accumulation caused by insufficient mixing is avoided, and the device has the advantages of simplicity in detachment, convenience in adjustment and labor and time saving.

Description

Technical Field

[0001] This utility model relates to the technical field of pneumatic conveying equipment for powder materials, and in particular to a detachable and adjustable injector. Background Technology

[0002] In positive pressure dilute phase pneumatic conveying processes, ejectors are indispensable. During operation, ejectors often experience issues such as failure to draw in material or blockages due to factors like air pressure, flow rate, conveying distance, and pipe diameter, requiring disassembly and adjustment. Traditional ejector structures include integral and two-piece designs. Integral ejectors require complete disassembly for adjustment, which is time-consuming and labor-intensive, severely impacting conveying efficiency. Furthermore, they cannot be adjusted under incompatible operating conditions, rendering them unusable. Two-piece ejectors, with the nozzle and air inlet pipe as a single unit, are difficult to disassemble and adjust when the nozzle needs adjustment. The ejection pipe is a single component, rendering it unusable when material accumulates, as it cannot be adjusted.

[0003] Therefore, there is an urgent need for a new detachable and adjustable injector to solve the above-mentioned technical problems. Utility Model Content

[0004] This utility model aims to solve the aforementioned technical problems, namely, that existing injector structures include integral injectors and two-piece injectors. Integral injectors require complete disassembly for adjustment, which is time-consuming and labor-intensive, severely affecting conveying efficiency. Furthermore, they cannot be adjusted when encountering mismatched working conditions, resulting in direct scrapping. In contrast, two-piece injectors, with the nozzle and air inlet pipe as a single unit, are inconvenient to disassemble for nozzle adjustment, making adjustment difficult. The injection pipe, being a single unit, is directly scrapped when material accumulates, and cannot be adjusted.

[0005] To this end, the present invention provides a detachable adjustable injector, comprising an injection pipe, a throat, an inlet tee, an air nozzle, and an air supply pipe. The top port of the inlet tee is the inlet. One side port of the inlet tee is detachably connected to the throat and the injection pipe in order from near to far, with the small-diameter end of the throat extending into the injection pipe. The other side port of the inlet tee is detachably connected to the air nozzle and the air supply pipe in order from near to far, with the small-diameter end of the air nozzle extending into the inlet tee.

[0006] In the specific embodiment of the above-mentioned detachable adjustable injector, a first connecting flange is fixed on the outer wall of one side port of the feed tee, a second connecting flange is fixed on the large-diameter end of the throat pipe, and a third connecting flange is fixed on the end of the injection pipe near the feed tee. The second connecting flange is located between the first connecting flange and the third connecting flange and is detachably fixed to each other through a first fastener.

[0007] In the specific embodiment of the above-mentioned detachable adjustable injector, a fourth connecting flange is fixed on the outer wall of the other port of the feed tee, a fifth connecting flange is fixed on the large-diameter end of the jet nozzle, and a sixth connecting flange is fixed on the end of the air supply pipe near the feed tee. The fifth connecting flange is located between the fourth connecting flange and the sixth connecting flange and is detachably fixed to each other through a second fastener.

[0008] In the specific embodiment of the above-mentioned detachable adjustable injector, in the case of initial installation, the nozzle of the jet nozzle extends beyond the edge of the feed inlet of the feed tee.

[0009] In the specific embodiment of the above-described detachable adjustable injector, the throat is in the shape of a conical tube.

[0010] In a specific embodiment of the above-mentioned detachable adjustable injector, the nozzle is in the shape of a conical tube, and a funnel-shaped inner cavity is formed inside the small-diameter end of the nozzle.

[0011] In the specific embodiment of the above-mentioned detachable adjustable injector, a first positioning post is fixed on the end face of the second connecting flange near the injection pipe, and a first positioning hole is provided on the third connecting flange to cooperate with the first positioning post. When the throat is inserted into the injection pipe, the first positioning post is inserted into the first positioning hole.

[0012] In the specific embodiment of the above-mentioned detachable adjustable injector, a second positioning post is fixed on the end face of the fifth connecting flange near the feed tee, and a second positioning hole that cooperates with the second positioning post is provided on the fourth connecting flange. When the jet nozzle is inserted into the feed tee, the second positioning post is inserted into the second positioning hole.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] In this application, the nozzle, throat, air supply pipe, and injection pipe are all designed as individual units, and the components are interconnected by fasteners. The entire injector adopts a split structure for material conveying. When it is necessary to adjust the nozzle to control the negative pressure, only the part connecting the injection pipe, nozzle, and feed tee needs to be disassembled, without disassembling other parts. The nozzle diameter is adjusted by cutting to obtain the best material suction effect. Similarly, when it is necessary to adjust the throat to control the mixing degree, only the part connecting the air supply pipe, throat, and feed tee needs to be disassembled, without disassembling other parts. The throat diameter is adjusted by cutting to avoid insufficient mixing and material accumulation. The overall structure has the advantages of simple disassembly and convenient adjustment, saving labor and time, and has high economic benefits. Attached Figure Description

[0015] The preferred embodiments of this utility model are described below with reference to the accompanying drawings, in which:

[0016] Figure 1 This is a schematic diagram of the detachable adjustable injector provided by this utility model;

[0017] Figure 2 yes Figure 1 Right view of the third connecting flange in the middle;

[0018] Figure 3 yes Figure 1 Left view of the second connecting flange;

[0019] Figure 4 yes Figure 1 Right view of the fourth connecting flange in the middle;

[0020] Figure 5 yes Figure 1 Left view of the fifth connecting flange.

[0021] List of reference numerals in the attached diagram:

[0022] 1. Injection pipe; 2. Throat pipe; 3. Feed tee; 4. Air nozzle; 5. Air delivery pipe; 6. Third connecting flange; 7. Second connecting flange; 8. First connecting flange; 9. Fourth connecting flange; 10. Fifth connecting flange; 11. Sixth connecting flange; 12. First positioning pin; 13. First positioning hole; 14. Second positioning pin; 15. Second positioning hole; 16. First connecting hole; 17. Second connecting hole. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0024] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the system or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the use of terms such as "first" and "second" to define components is merely for the convenience of distinguishing the aforementioned components. Unless otherwise stated, these terms have no special meaning and should not be construed as indicating or implying relative importance.

[0025] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "setting," and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0026] This utility model relates to the technical field of pneumatic conveying equipment for powder materials, and in particular to a detachable and adjustable injector. The purpose is to solve the problems of existing injector structures, which include integral injectors and two-piece injectors. Integral injectors require complete disassembly for adjustment, which is time-consuming and labor-intensive, severely impacting conveying efficiency. Furthermore, they cannot be adjusted under mismatched operating conditions, rendering them unusable. In contrast, two-piece injectors, with the nozzle and air inlet pipe as a single unit, are inconvenient to disassemble for nozzle adjustment, making adjustment difficult. The injection pipe, being a single unit, is unusable when material accumulates, and cannot be adjusted. To this end, the present invention provides a detachable adjustable injector, comprising an injection pipe, a throat, an inlet tee, an air nozzle, and an air delivery pipe. The top port of the inlet tee is the inlet. One side port of the inlet tee is detachably connected to the throat and the injection pipe in order from near to far, with the smaller diameter end of the throat extending into the injection pipe. The other side port of the inlet tee is detachably connected to the air nozzle and the air delivery pipe in order from near to far, with the smaller diameter end of the air nozzle extending into the inlet tee. When using a split structure for conveying materials, the air nozzle, which controls the negative pressure, can be detached and adjusted separately to obtain the best material suction effect; the throat, which controls the mixing degree, can also be detached and adjusted to avoid insufficient mixing and material accumulation. It has the advantages of simple disassembly and convenient adjustment, saving labor and time.

[0027] The detachable adjustable injector provided in the embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0028] See Figure 1 This utility model provides a detachable adjustable injector, including an injection pipe 1, a throat pipe 2, an inlet tee 3, an air nozzle 4, and an air supply pipe 5. The top port of the inlet tee 3 is the inlet. The throat pipe 2 and the injection pipe 1 are detachably connected to one side port of the inlet tee 3 in order from near to far. The small-diameter end of the throat pipe 2 extends into the injection pipe 1. The air nozzle 4 and the air supply pipe 5 are detachably connected to the other side port of the inlet tee 3 in order from near to far. The small-diameter end of the air nozzle 4 extends into the inlet tee 3.

[0029] Specifically, the throat 2 is conical in shape. The nozzle 4 is also conical in shape, with a funnel-shaped inner cavity formed inside the smaller diameter end of the nozzle 4. The cross-sectional diameter of the funnel gradually decreases, allowing the gas to achieve a higher flow velocity. The centerline of the throat 2 coincides with the centerline of the nozzle 4.

[0030] In the above embodiments, preferably, see below. Figure 1 A first connecting flange 8 is fixed on the outer wall of one side port of the feed tee 3, a second connecting flange 7 is fixed on the large diameter end of the throat pipe 2, and a third connecting flange 6 is fixed on the end of the injection pipe 1 near the feed tee 3. The second connecting flange 7 is located between the first connecting flange 8 and the third connecting flange 6 and is detachably fixed to each other through the first fastener.

[0031] Specifically, see Figure 2-3 Each of the first connecting flange 8, the second connecting flange 7, and the third connecting flange 6 has multiple circumferentially distributed first connecting holes. The first fasteners can be bolts and nuts. A detachable and fixed connection is achieved by passing the bolts through the first connecting holes on the first connecting flanges 8, 7, and 6, and then screwing in the nuts. The second connecting flange 7 is clamped and fixed between the first connecting flange 8 and the third connecting flange 6. To ensure a seal, sealing rings can be installed between the first connecting flange 8 and the second connecting flange 7, and between the second connecting flange 7 and the third connecting flange 6. When it is necessary to disassemble the throat pipe 2, only this part connecting to the injection pipe 1 needs to be removed.

[0032] In one embodiment, see Figure 2-3 A first positioning pin is fixed to the end face of the second connecting flange 7 near the injection pipe 1. A first positioning hole, which mates with the first positioning pin, is provided on the third connecting flange 6. When the throat pipe 2 is inserted into the injection pipe 1, the first positioning pin is inserted into the first positioning hole. After the first positioning pin is inserted into the first positioning hole, the first connecting holes on the second connecting flange 7 and the third connecting flange 6 correspond one-to-one. After the throat pipe 2 is assembled into the injection pipe 1, the insertion of the first positioning pin into the first positioning hole prevents the throat pipe 2 from rotating relative to the injection pipe 1, thus preventing misalignment of the first connecting hole position and ensuring smooth and quick installation, thereby improving installation efficiency.

[0033] In the above embodiments, please continue to refer to Figure 1 Preferably, a fourth connecting flange 9 is fixed on the outer wall of the other port of the feed tee 3, a fifth connecting flange 10 is fixed on the large diameter end of the jet nozzle 4, and a sixth connecting flange 11 is fixed on the end of the air supply pipe 5 near the feed tee 3. The fifth connecting flange 10 is located between the fourth connecting flange 9 and the sixth connecting flange 11 and is detachably fixed to each other through a second fastener.

[0034] Specifically, see Figure 4-5The fourth connecting flange 9, the fifth connecting flange 10, and the sixth connecting flange 11 each have multiple circumferentially distributed second connecting holes. The second fasteners can be bolts and nuts. A detachable and fixed connection is achieved by passing the bolts through the second connecting holes on the fourth connecting flange 9, the fifth connecting flange 10, and the sixth connecting flange 11, and then screwing in the nuts. The fifth connecting flange 10 is clamped and fixed between the fourth connecting flange 9 and the sixth connecting flange 11. To ensure a seal, sealing rings can be installed between the fourth connecting flange 9 and the fifth connecting flange 10, and between the fifth connecting flange 10 and the sixth connecting flange 11. When it is necessary to disassemble the jet nozzle 4, only the part connecting the air supply pipe 5 needs to be detached.

[0035] In one embodiment, see Figure 4-5 A second positioning pin is fixed on the end face of the fifth connecting flange 10 near the feed tee 3. A second positioning hole, which mates with the second positioning pin, is provided on the fourth connecting flange 9. When the air nozzle 4 is inserted into the feed tee 3, the second positioning pin is inserted into the second positioning hole. After the second positioning pin is inserted into the second positioning hole, the second connecting holes on the fourth connecting flange 9 and the fifth connecting flange 10 correspond one-to-one. After the air nozzle 4 is assembled into the port of the feed tee 3, the insertion of the second positioning pin into the second positioning hole prevents the throat pipe 2 from rotating relative to the injection pipe 1, thus preventing misalignment of the second connecting hole position and ensuring smooth and quick installation, thereby improving installation efficiency.

[0036] In one embodiment, during initial installation, the nozzle of the air jet 4 extends beyond the edge of the feed inlet of the feed tee 3. The length by which the nozzle extends is flexibly set according to the actual situation, with the aim of leaving sufficient margin for adjusting the air jet 4. Similarly, the length of the throat 2 is also left with sufficient margin for adjustment during initial installation.

[0037] This application is divided into three processes: gas acceleration, gas-solid mixing, and injection, as well as regulation:

[0038] Gas acceleration process and regulation:

[0039] A certain flow rate of gas enters the nozzle 4 through the gas delivery pipe 5. As the nozzle 4's diameter contracts, the gas velocity is continuously increased until it exits from the nozzle. Theoretically, the gas velocity ejected from the nozzle should be above 200 m / s. The nozzle diameter can be determined based on the fan flow rate. For example, the initial nozzle position is set 1 cm beyond the edge of the feed inlet of the feed tee 3. If backflow occurs and material is not drawn in, the following adjustments can be made:

[0040] First, while keeping the feed tee 3 connected to the upper equipment, remove the air supply pipe 5 and take out the air nozzle 4;

[0041] Second, use a cutting tool to remove 0.5cm from the nozzle, and then reinstall the nozzle 4 and the nozzle pipe in sequence;

[0042] Third, if the backflush still fails to draw in material, repeat step 2 and remove 0.5cm from the nozzle.

[0043] Gas-solid mixing process:

[0044] The space enclosed by the nozzle 4, the throat 2 port, and the outer wall of the pipe is a gas-solid mixing region. In this region, the kinetic energy of the gas is converted into the kinetic energy of the material, and the two move forward at roughly the same speed.

[0045] Injection process and adjustment:

[0046] When the gas is ejected at high speed, its volume expands rapidly, and the material is continuously entrained in the air and begins to mix. After mixing, the gas is accelerated and ejected through throat 2. If the diameter of throat 2 is too small, material tends to accumulate at the front end of throat 2, making it impossible to convey the material. To address this issue, the following adjustments can be made:

[0047] With the feed tee 3 still connected to the upstream equipment, remove the injection pipe 1 and take out the throat pipe 2;

[0048] Use a cutting tool to remove 1cm from the end of the throat tube 2, and then reinstall the throat tube 2 and the jet tube 1 in sequence;

[0049] If material continues to accumulate, you can continue cutting throat 2 and remove another 1cm from the end of throat 2.

[0050] Ultimately, by cutting and adjusting, the jet nozzle 4 is made to prevent backflow and material suction, and at the front end of the throat 2, there is no material accumulation that prevents material from being conveyed.

[0051] In this application, the nozzle 4, throat 2, air supply pipe 5, and injection pipe 1 are all designed as individual units, and the components are interconnected by fasteners. The entire injector adopts a split structure for conveying materials. When it is necessary to adjust the nozzle 4 to control the negative pressure, only the part connecting the injection pipe 1, nozzle 4, and feed tee 3 needs to be disassembled. There is no need to disassemble other parts. The nozzle 4 diameter is adjusted by cutting to obtain the best material suction effect. Similarly, when it is necessary to adjust the throat 2 to control the mixing degree, only the part connecting the air supply pipe 5, throat 2, and feed tee 3 needs to be disassembled. There is no need to disassemble other parts. The throat 2 diameter is adjusted by cutting to avoid insufficient mixing and material accumulation. The overall structure has the advantages of simple disassembly and convenient adjustment, saving labor and time, and high economic efficiency.

[0052] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of this utility model.

Claims

1. A detachable adjustable sprayer characterized by, The injection pipe, the throat pipe, the feeding tee, the air injection nozzle and the gas conveying pipe are included, the top port of the feeding tee is the feeding port, the side port of the feeding tee is detachably connected with the throat pipe and the injection pipe in sequence from near to far, the small-diameter end of the throat pipe extends into the injection pipe, the other side port of the feeding tee is detachably connected with the air injection nozzle and the gas conveying pipe in sequence from near to far, and the small-diameter end of the air injection nozzle extends into the feeding tee.

2. The detachable adjustable sprayer of claim 1, wherein, A first connecting flange is fixed on the outer wall of the side port of the feeding tee, a second connecting flange is fixed on the large-diameter end of the throat pipe, a third connecting flange is fixed on the end of the injection pipe close to the feeding tee, and the second connecting flange is located between the first connecting flange and the third connecting flange and is detachably fixed and connected with each other through a first fastener.

3. The detachable adjustable sprayer of claim 1, wherein, A fourth connecting flange is fixed on the outer wall of the other side port of the feeding tee, a fifth connecting flange is fixed on the large-diameter end of the air injection nozzle, and a sixth connecting flange is fixed on the end of the gas conveying pipe close to the feeding tee, and the fifth connecting flange is located between the fourth connecting flange and the sixth connecting flange and is detachably fixed and connected with each other through a second fastener.

4. The detachable adjustable sprayer of claim 1, wherein, In the case of initial installation, the nozzle of the air injection nozzle is beyond the edge of the feeding port of the feeding tee.

5. The detachable adjustable sprayer of claim 1, wherein, The throat pipe is in the shape of a conical pipe.

6. The detachable adjustable sprayer of claim 1, wherein, The air injection nozzle is in the shape of a conical pipe, and a funnel-shaped inner cavity is formed in the small-diameter end of the air injection nozzle.

7. The detachable adjustable sprayer of claim 2, wherein, A first positioning column is fixed on the end face of the second connecting flange close to the injection pipe, a first positioning hole is arranged on the third connecting flange and matched with the first positioning column, and the first positioning column is inserted into the first positioning hole when the throat pipe is inserted into the injection pipe.

8. The detachable adjustable sprayer of claim 3, wherein, A second positioning column is fixed on the end face of the fifth connecting flange close to the feeding tee, a second positioning hole is arranged on the fourth connecting flange and matched with the second positioning column, and the second positioning column is inserted into the second positioning hole when the air injection nozzle is inserted into the feeding tee.

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