Biogas back-spraying device

Abstract

The utility model relates to the technical field of biogas recycling, and provides a biogas back-spraying device which comprises a nozzle, the nozzle comprises a gas inlet pipe, one end of the gas inlet pipe is provided with an annular bulge, the annular bulge is provided with a plurality of first sliding chutes, and the first sliding chutes are uniformly distributed along the circumference of the axis of the annular bulge; one end of each sliding block is provided with a first protrusion, the first protrusions are arranged in the first sliding grooves in a sliding mode, and the other end of each sliding block is provided with a second protrusion; the rotating shell is arranged on the outer side of the air inlet pipe in a relatively rotating mode and provided with a plurality of second sliding grooves, the second sliding grooves are circumferentially and evenly distributed along the axis of the rotating shell, the second protrusions are slidably arranged in the second sliding grooves, and after the rotating shell rotates, the sliding blocks are driven to be close to or away from each other. By means of the technical scheme, the problem that in the prior art, the flow cannot be controlled when biogas is sprayed out of the combustion chamber after being recycled is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of biogas recovery and utilization, and specifically, to a biogas back-injection device. Background Art

[0002] With the rapid development of the global economy and the continuous growth of the population, the energy demand continues to climb. While traditional fossil fuels such as coal, oil, and natural gas meet the energy demand, they also bring serious environmental problems such as greenhouse gas emissions, air pollution, and energy shortages. In this context, finding renewable and clean energy has become an urgent task.

[0003] Biogas is a mixed gas produced by the fermentation of organic matter under anaerobic conditions by microorganisms, and its main components are methane and carbon dioxide. Biogas has a relatively high calorific value and can be used for power generation, heating, cooking, etc., and is a high-quality clean energy. However, when biogas is filtered and then injected into the combustion chamber, due to the inability to control the flow rate of the injected biogas, problems such as waste of resources are caused. Summary of the Utility Model

[0004] The utility model provides a biogas back-injection device, which solves the problem in the related art that the flow rate cannot be controlled when biogas is recovered and injected into the combustion chamber.

[0005] The technical solution of the utility model is as follows:

[0006] The biogas back-injection device includes a nozzle, and the nozzle includes:

[0007] An intake pipe, one end of the intake pipe has an annular protrusion, the annular protrusion has a plurality of first sliding grooves, and the first sliding grooves are circumferentially distributed along the axis of the annular protrusion;

[0008] Sliding blocks, the number of the sliding blocks is several, one end of the sliding block has a first protrusion, the first protrusion is slidably arranged in the first sliding groove, and the other end of the sliding block has a second protrusion;

[0009] A rotating shell, the rotating shell is relatively rotatably arranged outside the intake pipe, the rotating shell has a plurality of second sliding grooves, the second sliding grooves are circumferentially distributed along the axis of the rotating shell, the second protrusion is slidably arranged in the second sliding groove, and after the rotating shell rotates, it drives several of the sliding blocks to approach or move away from each other.

[0010] Optionally, it further includes:

[0011] A filtering device, the filtering device has a first air inlet and a first air outlet;

[0012] A desulfurization device, the desulfurization device having a second air inlet and a second air outlet, the second air inlet communicating with the first air outlet, and the second air outlet communicating with the intake pipe.

[0013] Optionally, the filtering device includes:

[0014] A mounting bracket;

[0015] A first housing; the first housing is disposed on the mounting bracket;

[0016] A second housing, the second housing is disposed on the mounting bracket, one end of the second housing abuts against one end of the first housing, the first air inlet is disposed on the second housing, and the first air outlet is disposed on the first housing;

[0017] A filter element, the filter element is disposed inside the second housing, the filter element divides the inside of the second housing into a first cavity and a second cavity, the first air inlet communicates with the first cavity, and the first air outlet communicates with the second cavity.

[0018] Optionally, the filtering device further includes:

[0019] A rotating shaft, the rotating shaft is rotatably disposed inside the second housing, and the axis of the rotating shaft coincides with the axis of the filter element;

[0020] A cleaning brush, one end of the cleaning brush has a brush, the other end of the cleaning brush is disposed on the rotating shaft, and the brush abuts against the inner side of the filter element.

[0021] Optionally, the filtering device further includes:

[0022] A connecting rod, the end of the cleaning brush away from the brush is disposed on the rotating shaft through the connecting rod, the cleaning brush is slidably disposed on the connecting rod, and the outer side of the connecting rod has a first step;

[0023] An elastic member, the two ends of the elastic member are respectively connected to the end of the cleaning brush away from the brush and the first step, and is used to provide a force for the cleaning brush to approach the connecting rod.

[0024] Optionally, the inside of the second housing has a mounting portion, and the filter element includes:

[0025] A mounting ring, the mounting ring is disposed on the mounting portion;

[0026] A filter layer, one end of the filter layer is disposed on the lower surface of the mounting ring;

[0027] Ash accumulation member, there are several of the ash accumulation members, the side walls of the ash accumulation members are hinged on the mounting bracket, located between the first housing and the second housing, the ash accumulation member has an ash accumulation portion and a ventilation portion, after several of the ash accumulation members approach each other, several of the ash accumulation portions abut against each other, and have the same cross-sectional size as the filter element.

[0028] Optionally, the rotating shell has several teeth, and the nozzle further includes;

[0029] A driving member, the driving member is arranged on the intake pipe;

[0030] A gear, the gear is arranged at the output end of the driving member and meshes with the teeth, and the driving member drives the gear to rotate.

[0031] Optionally, the nozzle further includes:

[0032] A spray head, the spray head has several V-shaped grooves, and the spray head is arranged on the rotating shell.

[0033] Optionally, it further includes:

[0034] A ball valve, the ball valve controls the communication or non-communication between the first air outlet and the second air inlet.

[0035] The working principle and beneficial effects of the present utility model are as follows:

[0036] In the present utility model, in order to solve the problem that the flow rate cannot be controlled when the biogas is sprayed into the combustion chamber after being recovered, a biogas backspray device is designed, which includes a nozzle. The nozzle includes an intake pipe, a sliding block and a rotating shell. One end of the intake pipe has an annular protrusion. Specifically, when it is necessary to change the flow rate of the biogas sprayed by the nozzle, the rotating shell is rotated, so that the first protrusion on the sliding block slides in the first chute on the rotating shell, and at the same time, the second protrusion on the sliding block slides in the second chute on the annular protrusion. When the rotating shell is rotated, several sliding blocks approach or move away from each other synchronously along the first chute and the second chute, so as to change the cross-sectional area through which the biogas nozzle gas can pass, thereby controlling the flow rate of the sprayed biogas.

[0037] The advantage is that this design can accurately control the flow rate of the biogas sprayed by the biogas backspray device, making the use of biogas more reasonable. Brief Description of the Drawings

[0038] The following will further illustrate the above-mentioned characteristics, technical features, advantages and their implementation manners of the present utility model in a clear and understandable manner in combination with the drawings of the preferred embodiments.

[0039] Figure 1 It is a front view of the structure of the present utility model;

[0040] Figure 2Schematic cross-sectional view of the nozzle structure of the present utility model;

[0041] Figure 3 Schematic view of the air inlet pipe structure of the present utility model;

[0042] Figure 4 Schematic view of the slider structure of the present utility model;

[0043] Figure 5 Schematic view of the rotating shell structure of the present utility model;

[0044] Figure 6 Schematic cross-sectional view of the filter device structure of the present utility model;

[0045] Figure 7 Schematic view of the dust accumulation member structure of the present utility model.

[0046] In the figure: 1. Nozzle, 101. Air inlet pipe, 1011. Annular protrusion, 1012. First chute, 102. Slider, 1021. First protrusion, 1022. Second protrusion, 103. Rotating shell, 1031. Second chute, 2. Filter device, 201. First air inlet, 202. First air outlet, 3. Desulfurization device, 301. Second air inlet, 302. Second air outlet, 203. Mounting bracket, 204. First housing, 205. Second housing, 206. Filter element, 207. First cavity, 208. Second cavity, 209. Rotating shaft, 210. Cleaning brush, 211. Connecting rod, 2111. First step, 212. Elastic member, 2051. Mounting part, 2061. Mounting ring, 2062. Filter layer, 2063. Dust accumulation member, 2064. Dust accumulation part, 2065. Ventilation part, 104. Driving member, 105. Gear, 1031. Teeth, 106. Nozzle, 4. Ball valve, 1061. V-shaped groove. Detailed implementation manners

[0047] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will describe the specific implementation manners of the present utility model with reference to the accompanying drawings. Obviously, the accompanying drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained according to these drawings, and other implementation manners can be obtained.

[0048] To simplify the drawings, only the parts related to the utility model are schematically shown in each figure, and they do not represent the actual structure of the product. In addition, to simplify the drawings for easy understanding, in some figures, only one of the components with the same structure or function is schematically shown, or only one of them is labeled. In this article, "one" not only means "only this one", but also can mean "more than one" situation, and "several" includes "two" and "more than two".

[0049] In this article, it should be noted that unless otherwise clearly specified and defined, the terms "install", "connect", and "couple" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0050] In addition, in the description of this application, the terms "first", "second", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0051] Refer to Figures 1 to 7 , for the first embodiment of the present utility model, a biogas back-injection device is proposed, which includes a nozzle 1. The nozzle 1 includes an air inlet pipe 101. One end of the air inlet pipe 101 has an annular protrusion 1011. The annular protrusion 1011 has a plurality of first sliding grooves 1012, and the first sliding grooves 1012 are circumferentially and evenly distributed along the axis of the annular protrusion 1011; the number of sliding blocks 102 is several. One end of the sliding block 102 has a first protrusion 1021, and the first protrusion 1021 is slidably arranged in the first sliding groove 1012. The other end of the sliding block 102 has a second protrusion 1022; a rotating shell 103 is relatively rotatably arranged outside the air inlet pipe 101. The rotating shell 103 has a plurality of second sliding grooves 1031, and the second sliding grooves 1031 are circumferentially and evenly distributed along the axis of the rotating shell 103. The second protrusion 1022 is slidably arranged in the second sliding groove 1031. After the rotating shell 103 rotates, it drives several sliding blocks 102 to approach or move away from each other.

[0052] In this embodiment, in order to solve the problem that the flow rate of biogas cannot be controlled when it is ejected into the combustion chamber after recovery, a biogas back-injection device is designed, which includes a nozzle 1. The nozzle 1 includes an intake pipe 101, a sliding block 102 and a rotating shell 103. One end of the intake pipe 101 has an annular protrusion 1011. Specifically, when it is necessary to change the flow rate of the biogas ejected by the nozzle 1, the rotating shell 103 is rotated so that the first protrusion 1021 on the sliding block 102 slides in the first chute 1012 on the rotating shell 103. At the same time, the second protrusion 1022 on the sliding block 102 slides in the second chute 1031 on the annular protrusion 1011. When the rotating shell 103 is rotated, a plurality of sliding blocks 102 approach or move away from each other synchronously along the first chute 1012 and the second chute 1031, thereby changing the cross-sectional area through which the gas of the biogas nozzle 1 can pass, and thus controlling the flow rate of the ejected biogas.

[0053] The advantage is that this design can accurately control the flow rate of the biogas ejected by the biogas back-injection device, making the use of biogas more reasonable.

[0054] Furthermore, it further includes a filtering device 2, which has a first air inlet 201 and a first air outlet 202; a desulfurization device 3 has a second air inlet 301 and a second air outlet 302. The second air inlet 301 is communicated with the first air outlet 202, and the second air outlet 302 is communicated with the intake pipe 101.

[0055] In this embodiment, the biogas back-injection device also has a filtering device 2 and a desulfurization device 3. Specifically, after the biogas is recovered, it first passes through the filtering device 2 to filter the solid particles inside the biogas. After the filtering is completed, it enters the desulfurization device 3 for desulfurization and dehydration. The advantage is that the biogas after solid particle filtration and desulfurization and dehydration treatment burns more fully and stably, making the resource utilization more sufficient and efficient.

[0056] Furthermore, the filtering device 2 includes a mounting bracket 203; a first housing 204 is arranged on the mounting bracket 2, a second housing 205 is arranged on the mounting bracket 203, one end of the second housing 205 abuts against one end of the first housing 204, the first air inlet 201 is arranged on the second housing 2, and the first air outlet 202 is arranged on the first housing 204; a filter element 206 is arranged in the second housing 205, and the filter element 206 divides the inside of the second housing 205 into a first cavity 207 and a second cavity 208. The first air inlet 201 communicates with the first cavity 207, and the first air outlet 202 communicates with the second cavity 208.

[0057] In this embodiment, the specific structure of the filtering device 2 is described, including the mounting bracket 203, the first housing 204, the second housing 205, and the filter element 206. Specifically, both the first housing 204 and the second housing 205 are mounted on the mounting bracket 203. The filter element 206 divides the interior of the first housing 204 into a first cavity 207 and a second cavity 208. When the unfiltered biogas enters the first air inlet 201 located on the second housing 205, the unfiltered biogas enters the first cavity 207, passes through the filter element 206, and enters the second cavity 208 for solid particle filtration. The advantage is that the solid particles in the unfiltered biogas can be filtered, making the filtered biogas burn more fully and stably, and making resource utilization more sufficient and efficient.

[0058] Further, the filtering device 2 further includes a rotating shaft 209. The rotating shaft 209 is rotatably arranged in the second housing 205, and the axis of the rotating shaft 209 coincides with the axis of the filter element 206. One end of the cleaning brush 210 has a brush, and the other end of the cleaning brush 210 is arranged on the rotating shaft 209, and the brush abuts against the inner side of the filter element 206.

[0059] In this embodiment, a rotating shaft 209 and a cleaning brush 210 are added to the filtering device 2. Specifically, when the filter element 206 needs to be cleaned, the rotating shaft 209 drives the cleaning brush 210 to rotate. Since the brush on the cleaning brush 210 abuts against the inner side of the filter element 206, when the cleaning brush 210 rotates with the rotating shaft 209, the inner side of the filter element 206 can be cleaned. The advantage is to avoid clogging of the filter element 206 due to the long use time of the filtering device 2 and reduce the filtering efficiency.

[0060] Further, the filtering device 2 further includes a connecting rod 211. One end of the cleaning brush 210 away from the brush is arranged on the rotating shaft 209 through the connecting rod 211. The cleaning brush 210 is slidably arranged on the connecting rod 211, and the outer side of the connecting rod 211 has a first step 2111. Both ends of the elastic member 212 are respectively connected to one end of the cleaning brush 210 away from the brush and the first step 2111, and are used to provide a force for the cleaning brush 210 to approach the connecting rod 211.

[0061] In this embodiment, a connecting rod 211 and an elastic member 212 are added to the filtering device 2. Specifically, when the rotating shaft 209 does not rotate, the elastic member 212 will provide a force for the cleaning brush 210 to approach the connecting rod 211. Since the cleaning brush 210 slides on the connecting rod 211, the brush does not abut against the inner side of the filter element 206. When the rotating shaft 209 rotates, a centrifugal force is provided, making the brush abut against the inner side of the filter element 206. The advantage is that when cleaning is not required, the brush does not abut against the inner side of the filter element 206, enabling the filter element 206 to be fully used and ensuring the filtering efficiency.

[0062] Further, an installation part 2051 is provided inside the second housing 205. The filter element 206 includes an installation ring 2061 which is arranged on the installation part 2051. One end of the filter layer 2062 is arranged on the lower surface of the installation ring 2061. The number of dust accumulation parts 2063 is several. The side walls of the dust accumulation parts 2063 are hinged to the installation bracket 203 and are located between the first housing 204 and the second housing 205. Each dust accumulation part 2063 has a dust accumulation part 2064 and a ventilation part 2065. After several dust accumulation parts 2063 approach each other, several dust accumulation parts 2064 abut against each other and have the same cross-sectional size as the filter element 206.

[0063] In this embodiment, the specific structure of the filter element 206 is described, including an installation ring 2021, a filter layer 2022 and a dust accumulation part 2023. Specifically, an installation part 2051 is provided inside the second housing 205. The filter element 206 is installed on the installation part 2051 through the installation ring 2021. The filter layer 2022 can filter solid particles from the biogas passing through the filter layer 2022. The filtered gas enters the second cavity 208 through the ventilation part 2025 and then enters the desulfurization device 3. When the filter element 206 is cleaned, the solid particles falling from the filter element 206 will fall onto the dust accumulation part 2024 of the dust accumulation part 2023. After the filter device 2 is used for a period of time, the dust accumulation part 2024 hinged to the installation bracket 203 is rotated out for cleaning. The advantage is that the solid particles in the filter device 2 can be quickly and simply cleaned and collected.

[0064] Further, the rotating housing 103 has several gear teeth 1031. The nozzle 1 further includes a driving part 104 which is arranged on the intake pipe 101. A gear 105 is arranged at the output end of the driving part 104 and meshes with the gear teeth 1031. The driving part 104 drives the gear 105 to rotate.

[0065] In this embodiment, several gear teeth 105 are added to the rotating housing 103. At the same time, the nozzle 1 is provided with a driving part 104 and a gear 1031. Specifically, when it is necessary to rotate the rotating housing 103, the first driving part 104 is started. The first driving part 104 drives the gear 1031 to rotate. Since the gear 1031 meshes with the gear teeth 105, the rotating housing 103 is driven to rotate, realizing the operation of adjusting the biogas flow rate ejected by the biogas back-injection device.

[0066] Further, the nozzle 1 further includes a spray head 106 which has several V-shaped grooves 1061. The spray head 106 is arranged on the rotating housing 103.

[0067] In this embodiment, a spray head 106 is added to the nozzle 1. The spray head 106 has a V-shaped opening. The advantage is that the ejected biogas can be diffused, enabling the biogas to fully diffuse in the combustion chamber.

[0068] Further, it further includes a ball valve 4, and the ball valve 4 controls the communication or non-communication between the first air outlet 202 and the second air inlet 301.

[0069] In this embodiment, a ball valve 4 is added, and the ball valve 4 can control the communication between the first air outlet 202 and the second air inlet 301. The advantage is that real-time control of the device can be carried out to avoid safety accidents.

[0070] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. Biogas back-injection device, characterized in that, including a nozzle (1), the nozzle (1) comprising: an intake pipe (101), one end of the intake pipe (101) having an annular protrusion (1011), the annular protrusion (1011) having a plurality of first sliding grooves (1012) which are circumferentially and uniformly distributed along the axis of the annular protrusion (1011); a plurality of sliding blocks (102), one end of each sliding block (102) having a first protrusion (1021), the first protrusion (1021) being slidably disposed within the first sliding groove (1012), and the other end of the sliding block (102) having a second protrusion (1022); a rotating shell (103), the rotating shell (103) being relatively rotatably disposed outside the intake pipe (101), the rotating shell (103) having a plurality of second sliding grooves (1031) which are circumferentially and uniformly distributed along the axis of the rotating shell (103), the second protrusion (1022) being slidably disposed within the second sliding groove (1031), and after the rotating shell (103) rotates, driving a plurality of the sliding blocks (102) to approach or move away from each other.

2. The biogas back-injection device according to claim 1, characterized in that, It further includes: a filtering device (2), the filtering device (2) having a first air inlet (201) and a first air outlet (202); a desulfurization device (3), the desulfurization device (3) having a second air inlet (301) and a second air outlet (302), the second air inlet (301) being communicated with the first air outlet (202), and the second air outlet (302) being communicated with the intake pipe (101).

3. The biogas back-injection device according to claim 2, characterized in that, The filtering device (2) includes: a mounting bracket (203); a first housing (204); the first housing (204) is disposed on the mounting bracket (203); a second housing (205), the second housing (205) is disposed on the mounting bracket (203), one end of the second housing (205) abuts against one end of the first housing (204), the first air inlet (201) is disposed on the second housing (205), and the first air outlet (202) is disposed on the first housing (204); a filter element (206), the filter element (206) is disposed within the second housing (205), the filter element (206) divides the interior of the second housing (205) into a first cavity (207) and a second cavity (208), the first air inlet (201) communicates with the first cavity (207), and the first air outlet (202) communicates with the second cavity (208).

4. The biogas back-injection device according to claim 3, wherein, The filtering device (2) further includes: a rotating shaft (209), the rotating shaft (209) is rotatably disposed within the second housing (205), and the rotating shaft (209) coincides with the axis of the filter element (206); a cleaning brush (210), one end of the cleaning brush (210) having a brush, the other end of the cleaning brush (210) is disposed on the rotating shaft (209), and the brush abuts against the inner side of the filter element (206).

5. The biogas back-injection device according to claim 4, characterized in that, The filtering device (2) further includes: The connecting rod (211), one end of the cleaning brush (210) away from the brush is arranged on the rotating shaft (209) through the connecting rod (211), the cleaning brush (210) is slidably arranged on the connecting rod (211), and the outer side of the connecting rod (211) has a first step (2111); The elastic member (212), both ends of the elastic member (212) are respectively connected to one end of the cleaning brush (210) away from the brush and the first step (2111), and is used to provide a force for the cleaning brush (210) to approach the connecting rod (211).

6. The biogas back-injection device according to claim 3, characterized in that, The interior of the second housing (205) has a mounting portion (2051), and the filter element (206) includes: The mounting ring (2061), the mounting ring (2061) is arranged on the mounting portion (2051); The filter layer (2062), one end of the filter layer (2062) is arranged on the lower surface of the mounting ring (2061); The dust accumulating members (2063), the number of the dust accumulating members (2063) is several, the side walls of the dust accumulating members (2063) are hinged on the mounting bracket (203), located between the first housing (204) and the second housing (205), the dust accumulating members (2063) have a dust accumulating portion (2064) and a ventilation portion (2065), after several dust accumulating members (2063) approach each other, several dust accumulating portions (2064) abut against each other, and have the same cross-sectional size as the filter element (206).

7. The biogas back-injection device according to claim 1, characterized in that, The rotating housing (103) has several teeth (1031), and the nozzle (1) further includes; The driving member (104), the driving member (104) is arranged on the air inlet pipe (101); The gear (105), the gear (105) is arranged at the output end of the driving member (104) and meshes with the teeth (1031), and the driving member (104) drives the gear (105) to rotate.

8. The biogas back-injection device according to claim 7, characterized in that, The nozzle (1) further includes: The nozzle head (106), the nozzle head (106) has several V-shaped grooves (1061), and the nozzle head (106) is arranged on the rotating housing (103).

9. The biogas back-injection device according to claim 2, wherein, It further includes: The ball valve (4), the ball valve (4) controls the communication or non-communication between the first air outlet (202) and the second air inlet (301).

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