Continuous reaction sewage treatment equipment

Abstract

The utility model belongs to the technical field of sewage treatment, and particularly relates to sewage treatment equipment for continuous reaction, which comprises a reaction tank and a tank body support on which the reaction tank falls, the top of the reaction tank is fixedly communicated with a gas collection shell, and the top end of the gas collection shell is fixedly communicated with a normally closed electromagnetic gas valve. The top of the gas collecting shell is fixedly communicated with the biogas pipe, the bottom of the reaction tank is fixedly communicated with a pneumatic film adjusting conical valve A, the bottom of the pneumatic film adjusting conical valve A is fixedly communicated with a main feeding pipe, and the discharging tail end of the main feeding pipe is fixedly communicated with a pneumatic film adjusting conical valve B; the method has the characteristics of continuous reaction, easiness in control, difficulty in scabbing, uniformity in fermentation and low cost.

Description

Technical Field

[0001] The utility model belongs to the technical field of sewage treatment, and in particular relates to sewage treatment equipment with continuous reaction. Background Art

[0002] If drainage from rural life, livestock and poultry breeding, etc. is discharged directly into the river without effective treatment, a large amount of organic matter, nitrogen, phosphorus and pathogens will be brought into the river. These pollutants are far greater than the self-purification capacity of the river, which will cause eutrophication of the river, reduced dissolved oxygen, gradual death of aquatic plants and fish, and damage to the water ecological environment. Rural areas are generally far away from cities and do not have the conditions for sewage to enter the municipal pipe network. On the other hand, the rich nitrogen, phosphorus and other nutrients in such wastewater are precious resources, especially phosphorus as a non-renewable resource. The production and lifestyle of modern society leads to the one-way flow of most phosphorus, and its final destination is the sedimentary layer of the deep sea. Only a small part of the phosphorus that sinks into the deep sea can return to land through shallow-sea fish or seabirds, resulting in a gradual reduction in phosphorus resources. Therefore, many rural areas build biogas pools to treat sewage and use biogas to alleviate some energy pressure.

[0003] Biogas is a combustible gas produced by the fermentation of organic matter in an anaerobic environment under certain temperature, humidity, concentration and pH conditions through microbial fermentation. It has been widely used in recent years.

[0004] However, there are many problems with biogas technology, which make it impossible to apply it on a large scale, industrially and efficiently. These defects mainly include: 1. Large area; 2. High construction cost; 3. Construction cost is difficult to control; 4. Inconvenient operation and control; 5. The ratio of solid-liquid mixture is difficult to control; 6. Residues tend to sink to the bottom and form crusts, which are difficult to remove; 7. Multiple biogas tanks have different fermentation degrees in different biogas tanks, which makes some raw materials over-fermented and some under-fermented; 8. It is difficult to discharge materials from large biogas tanks; 9. After fermentation is completed, it needs to be stopped and cleaned, and cannot be used continuously, which takes up fermentation time; 10. Some biogas tanks need to be stirred, which increases costs. Utility Model Content

[0005] In order to solve the problems raised in the above background technology, the utility model provides a sewage treatment equipment with continuous reaction, which has the characteristics of continuous reaction, easy control, not easy to form crusts, uniform fermentation and low cost.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a continuous reaction sewage treatment equipment, comprising a reaction tank and a tank support for the reaction tank to be placed on the ground, the top of the reaction tank is fixedly connected to a gas collecting shell through a flange, the top of the gas collecting shell is fixedly connected to a normally closed electromagnetic valve, the top of the gas collecting shell is fixedly connected to a biogas pipe, the bottom of the reaction tank is fixedly connected to a pneumatic diaphragm regulating cone valve A through a flange, the bottom of the pneumatic diaphragm regulating cone valve A is fixedly connected to a main feed pipe through a flange, and the discharge end of the main feed pipe is fixedly connected to a pneumatic diaphragm regulating cone valve B through a flange;

[0007] The side wall of the gas collecting housing is fixedly connected with an auxiliary feed branch pipe with an upwardly inclined discharge end, and one end of the auxiliary feed branch pipe is fixedly connected with a pneumatic film regulating cone valve C;

[0008] The reaction tank is fed with material from the bottom of the reaction tank through the main feeding pipe when feeding for the first time, and the auxiliary feeding branch pipe is used to supplement the material during subsequent feeding.

[0009] As a preferred continuous reaction sewage treatment equipment of the utility model, the feed end of the auxiliary feed branch pipe is fixedly connected to the auxiliary feed main pipe, and the reaction tank, gas collecting shell, normally closed solenoid valve, pneumatic diaphragm regulating cone valve A, auxiliary feed branch pipe and pneumatic diaphragm regulating cone valve C form a complete set of reaction equipment, and several complete sets of reaction equipment share a biogas pipe, auxiliary feed main pipe and main feed pipe for cyclic reaction.

[0010] As a preferred continuous reaction sewage treatment equipment of the utility model, a trumpet-shaped exhaust control shell with a small top and a large bottom is fixedly connected to the inner side of the top of the gas collecting shell, and one end of the exhaust control shell extends to the outside of the gas collecting shell and is fixedly connected to the inner side of one end of the biogas pipe, and an air inlet hole is opened on the exhaust control shell located in the internal space of the gas collecting shell, and a plugging head is contacted and connected to the inner wall of the exhaust control shell, and a mounting bracket is fixedly connected to the bottom of the plugging head, and the outer side of one end of the mounting bracket is slidably connected to the inner side of the bottom of the exhaust control shell, and a floating block is fixedly connected to the bottom of the mounting bracket.

[0011] As a preferred continuous reaction sewage treatment equipment of the utility model, when the liquid level of the solid-liquid mixture is exactly at the half position of the discharge end of the auxiliary feed branch pipe, the buoyancy of the solid-liquid mixture on the floating block can just make the sealing head contact and seal with the inner wall of the exhaust control housing.

[0012] As a preferred embodiment of the continuous reaction sewage treatment equipment of the utility model, the floating block is a ring-shaped structure, and the notch of the floating block is directly opposite to the discharge end of the auxiliary feed branch pipe.

[0013] As a preferred embodiment of the continuous reaction sewage treatment equipment of the utility model, a limiting groove is provided on the inner side of the outer circle of the floating block, and a limiting strip is fixedly connected to the inner wall of the gas collecting shell, and the limiting strip can slideably cooperate with the limiting groove provided on the floating block.

[0014] As a preferred embodiment of the continuous reaction sewage treatment equipment of the utility model, a mining intrinsically safe Hall sensor is fixedly installed on the inner side of one end of the floating block, and a magnet is fixedly connected to the inner side of one end of the limit bar.

[0015] As a preferred continuous reaction sewage treatment equipment of the utility model, the reaction tank includes a tank top and a tank bottom, a plurality of annular tank walls are arranged between the tank top and the tank bottom, and the plurality of tank walls, the tank walls and the tank top and the tank bottom are all fixed by annular grooves arranged on the fixing ring.

[0016] As a preferred continuous reaction sewage treatment equipment of the utility model, a reinforcement sleeve is fixedly connected to the outer side of one end of the tank top and the tank bottom, and a plurality of fixed brackets are fixedly connected to the outer side of one end of the reinforcement sleeve at equal intervals, and two upper and lower corresponding fixed brackets are fixedly connected with fastening ropes, and two fastening ropes located on the same straight line are fixedly connected to the two ends of the screw tensioner respectively.

[0017] As a preferred continuous reaction sewage treatment equipment of the utility model, the shell materials of the tank top, tank bottom, tank wall and gas collecting shell are all made of two layers of wooden boards sandwiching a layer of steel plate and fixed, and the tank top, tank bottom, tank wall and the inner wall of the gas collecting shell are sprayed with anti-corrosion paint.

[0018] Compared with the prior art, the beneficial effects of the utility model are as follows: according to the demand of production capacity, the height of the reaction tank is adjusted to reasonably occupy the land area; the rapid closing of the cone valve A is adjusted by the pneumatic diaphragm, so that the water hammer effect and the irregular water hammer wave oscillation caused by the surge can be generated, which can make the solid-liquid mixture inside the reaction tank shake and oscillate, and the shaking and oscillation of the solid-liquid mixture can prevent the solid organic matter from contacting with the inner wall of the reaction tank and the gas collecting shell for a long time, resulting in scab, thereby avoiding the use of stirring means to avoid scab and reducing the cost of the device; it has the function of automatic exhaust, and the control is simpler; the mixing ratio of solid and liquid can be controlled by discharging the biogas slurry from the bottom; when several sets of reaction equipment share a biogas pipe, an auxiliary feed main pipe and a main feed pipe for a circulation reaction, the solid-liquid mixtures in multiple reaction tanks are crossed with each other, so that the reaction degree of the solid-liquid mixtures in multiple reaction tanks is more uniform, and can be used continuously. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 This is a schematic diagram of the connection structure of a single reaction tank in the utility model;

[0022] Figure 3 It is an enlarged view of the top structure of a single reaction tank in the utility model;

[0023] Figure 4 This is a sectional view of the overall structure of a single reaction tank in the utility model;

[0024] Figure 5 For the utility model Figure 4 Schematic diagram of the enlarged structure at A;

[0025] Figure 6 For the utility model Figure 4 Schematic diagram of the enlarged structure at B;

[0026] Figure 7 It is a sectional view of the overall structure of the gas collecting shell in the utility model.

[0027] In the figure:

[0028] 1. Reaction tank; 2. Gas collecting shell; 21. Normally closed electromagnetic valve; 3. Biogas pipe; 4. Pneumatic diaphragm regulating cone valve A; 5. Main feed pipe; 6. Pneumatic diaphragm regulating cone valve B;

[0029] 7. Auxiliary feed branch pipe; 8. Pneumatic diaphragm regulating cone valve C; 9. Auxiliary feed main pipe;

[0030] 201, exhaust control housing; 202, air inlet; 203, plugging head; 204, mounting bracket; 205, floating block;

[0031] 206, connecting bracket; 207, discharge hole;

[0032] 208, limit groove; 209, limit strip; 2010, counterweight;

[0033] 2011, Intrinsically safe Hall sensor for mining; 2012, Magnet;

[0034] 101, tank top; 102, tank bottom; 103, tank wall; 104, fixing ring;

[0035] 105. Reinforcement sleeve; 106. Fixed bracket; 107. Fastening rope; 108. Screw tensioner;

[0036] 109. Steel plate; 1010. Wooden board. DETAILED DESCRIPTION

[0037] 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.

[0038] like Figure 1 and Figure 2 As shown:

[0039] A sewage treatment equipment for continuous reaction, comprising a reaction tank 1 and a tank support for the reaction tank 1 to be placed on the ground, the top of the reaction tank 1 is fixedly connected to a gas collecting shell 2 via a flange, the top of the gas collecting shell 2 is fixedly connected to a normally closed electromagnetic valve 21, the top of the gas collecting shell 2 is fixedly connected to a biogas pipe 3, the bottom of the reaction tank 1 is fixedly connected to a pneumatic diaphragm regulating cone valve A4 via a flange, the bottom of the pneumatic diaphragm regulating cone valve A4 is fixedly connected to a main feed pipe 5 via a flange, and the discharge end of the main feed pipe 5 is fixedly connected to a pneumatic diaphragm regulating cone valve B6 via a flange;

[0040] The side wall of the gas collecting housing 2 is fixedly connected with an auxiliary feed branch pipe 7 with the discharge end tilted upward, and one end of the auxiliary feed branch pipe 7 is fixedly connected with a pneumatic film regulating cone valve C8;

[0041] When the reaction tank 1 is fed for the first time, the material is fed from the bottom of the reaction tank 1 through the main feeding pipe 5, and when the material is fed subsequently, the material is supplemented through the auxiliary feeding branch pipe 7.

[0042] In this embodiment: the traditional biogas tank is designed as a tank structure, and the reaction tank 1 is erected on the ground through a tank bracket. The construction cost is low and it is easy to maintain and control. When feeding for the first time, the normally closed electromagnetic valve 21 is opened to make the pneumatic diaphragm regulating cone valve B6 in a closed state, and the pneumatic diaphragm regulating cone valve A4 at the bottom of the reaction tank 1 is in an open state. At this time, the solid-liquid mixture is transported to the inside of the main feed pipe 5. When the solid-liquid mixture is transported to the inside of the main feed pipe 5, it needs to have a certain liquid pressure. It can be connected to the feed end of the main feed pipe 5 through existing equipment, or the gravitational potential energy brought by the height difference can be used to provide pressure. The solid-liquid mixture inside the main feed pipe 5 will pass through the opened pneumatic diaphragm regulating cone valve A4 and enter the inside of the reaction tank 1 under the influence of pressure, so that the excess gas inside the reaction tank 1 is discharged through the normally closed electromagnetic valve 21 until the solid-liquid mixture inside the reaction tank 1 reaches the target capacity;

[0043] During the reaction, as biogas is produced, organic matter gradually decreases (organic matter will eventually form biogas after fermentation reaction, so solid organic matter gradually decreases), and feeding is carried out through the inclined top feeding pipe. After the feeding is completed, the feeding is automatically stopped. When feeding through the inclined top feeding pipe, the pneumatic diaphragm regulating cone valve C8 is opened to transport the solid-liquid mixture to the inner side of the auxiliary feeding branch pipe 7. After the solid-liquid mixture passes through the pneumatic diaphragm regulating cone valve C8 and the auxiliary feeding branch pipe 7, it will enter the inner side of the gas collecting shell 2. Since the gas collecting shell 2 and the reaction tank 1 are connected, the solid-liquid mixture can be fed in the gas collecting shell 2;

[0044] During the reaction, after the biogas is generated, it can be transported to the biogas storage device through the biogas pipe 3. The biogas liquid after the reaction in the reaction tank 1 can be discharged in sequence through the pneumatic membrane regulating cone valve A4, the main feed pipe 5 and the pneumatic membrane regulating cone valve B6. The biogas liquid is a bright brown liquid formed after the organic matter is fermented. The biogas liquid contains amino acids, cellulose, cellulase, protein, ribose, auxin, gibberellin, unsaturated fatty acids and certain antibiotic substances; the biogas liquid is mainly used for seed soaking, foliar fertilizer spraying, mixing nutrient soil and flower and fruit preserving agent, soilless culture mother liquid, growing flowers, and as a feed additive;

[0045] By adjusting the rapid closing of the conical valve A4 through the pneumatic diaphragm, water hammer effect and irregular water hammer wave oscillation caused by surge can be generated. This method can cause the solid-liquid mixture inside the reaction tank 1 to shake and oscillate. The shaking and oscillation of the solid-liquid mixture can prevent the solid organic matter from being in contact with the inner wall of the reaction tank 1 and the gas collecting shell 2 for a long time, causing scabbing, thereby avoiding the use of stirring means to avoid scabbing and reducing the cost of the device.

[0046] The biogas production process can be roughly divided into three stages, namely the liquefaction stage (also called deliquescence reaction, which is a physical change), the acidification stage and the methanogenesis stage; in the liquefaction stage, microorganisms convert water-insoluble solid organic matter into water-soluble substances, such as cellulase, amylase, proteinase and lipase, hydrolyze polysaccharides into monosaccharides or disaccharides, decompose proteins into polypeptides and amino acids, and decompose fats into glycerol and fatty acids; in the acidification stage, these soluble substances continue to be decomposed and metabolized into low molecular substances under the action of bacterial intracellular enzymes, such as butyric acid, propionic acid, acetic acid, and simple organic substances such as alcohols, ketones, and aldehydes; in the methanogenesis stage, methanogens decompose acetic acid into methane and carbon dioxide.

[0047] Solid-liquid mixtures include rural domestic sewage and livestock and poultry breeding drainage, such as sewage mixed with human and animal feces, and sewage containing organic matter (straw, weeds).

[0048] Furthermore, if Figure 1-Figure 7 As shown:

[0049] In an optional embodiment, the feed end of the auxiliary feed branch pipe 7 is fixedly connected to the auxiliary feed main pipe 9, and the reaction tank 1, the gas collecting shell 2, the normally closed solenoid valve 21, the pneumatic diaphragm regulating cone valve A4, the auxiliary feed branch pipe 7 and the pneumatic diaphragm regulating cone valve C8 form a complete set of reaction equipment. Several complete sets of reaction equipment share a biogas pipe 3, the auxiliary feed main pipe 9 and the main feed pipe 5 for circulation reaction.

[0050] In this embodiment: when several complete sets of reaction equipment share a biogas pipe 3, an auxiliary feed main pipe 9 and a main feed pipe 5 for cyclic reaction, continuous fermentation can be achieved. According to the predetermined processing volume during design, new fermentation raw materials (solid-liquid mixture) are added continuously or quantitatively in each cycle, and the same amount of biogas liquid is discharged at the same time, so that the fermentation process is carried out continuously, so that the unit quantity and quality of the solid and liquid in the reaction tank 1 are basically kept in a stable state, so the gas production is also very balanced. The production of biogas generally takes 30-60 days. Taking the biogas fermentation time of 30 days as an example, if there is only one reaction tank 1, the fermentation raw materials need to stay in the reaction tank 1 for 30 days, which is easy to produce scabs. If ten reaction tanks 1 are provided, not only more fermentation raw materials (i.e., domestic and livestock and poultry breeding sewage) can be processed, but also the problem of scabs caused by too long a stay time in a reaction tank 1 can be solved. When ten reaction tanks 1 are provided, the fermentation raw materials can be frequently moved to the next reaction tank 1. The specific number of frequent times is related to the amount of biogas liquid discharged from the last reaction tank 1. Frequent movement of fermentation raw materials can not only solve the problem of crusting caused by long-term contact between solid organic matter and the inner wall of the reaction tank 1, but also make the reaction degree of the solid-liquid mixture in the multiple reaction tanks 1 more uniform by the cross-intersection of the solid-liquid mixture in the multiple reaction tanks 1. The specific operation is as follows: stop conveying the solid-liquid mixture to the inner side of the main feed pipe 5, open the pneumatic film regulating cone valve B6 and the pneumatic film regulating cone valve A4 at the bottom of the last reaction tank 1, at this time, the biogas slurry in the last reaction tank 1 will be discharged, and after the amount of biogas slurry discharged reaches the target value, close the pneumatic film regulating cone valve B6, and then open the pneumatic film regulating cone valve A4 at the bottom of the second-to-last reaction tank 1, then the bottoms of the last reaction tank 1 and the second-to-last reaction tank 1 are connected to each other, and according to the principle of the communicating vessel, the biogas slurry in the second-to-last reaction tank 1 will enter the last reaction tank 1, and according to the above method, the biogas slurry in the third-to-last reaction tank 1 enters the second-to-last reaction tank 1, and so on. Cycle until part of the biogas slurry in the first reaction tank 1 enters the second reaction tank 1;

[0051] It should be noted that, each time the biogas slurry in the previous reaction tank 1 enters the next reaction tank 1 , the flow rate of the biogas slurry will gradually decrease with the increase in the number of times, and the missing amount of solid-liquid mixture in each reaction tank 1 will be added through the auxiliary feed branch pipe 7 .

[0052] In an optional embodiment, a trumpet-shaped exhaust control shell 201 with a small top and a large bottom is fixedly connected to the inner side of the top of the gas collecting shell 2. One end of the exhaust control shell 201 extends to the outer side of the gas collecting shell 2 and is fixedly connected to the inner side of one end of the biogas pipe 3. An air inlet 202 is provided on the exhaust control shell 201 located in the internal space of the gas collecting shell 2. A plugging head 203 is contacted and connected to the inner wall of the exhaust control shell 201. A mounting bracket 204 is fixedly connected to the bottom of the plugging head 203. The outer side of one end of the mounting bracket 204 is slidably connected to the inner side of the bottom of the exhaust control shell 201. A floating block 205 is fixedly connected to the bottom of the mounting bracket 204.

[0053] In this embodiment: during the reaction process, as biogas is produced, organic matter gradually decreases, which will also cause the liquid level of the solid-liquid mixture in the gas collecting shell 2 to drop. As the liquid level drops, the floating block 205 will also drop. The drop of the floating block 205 will drive the installation bracket 204 to drop. The drop of the installation bracket 204 will drive the plugging head 203 to drop. After the plugging head 203 drops, it will not contact the exhaust control shell 201, so that the biogas in the gas collecting shell 2 can pass through the air inlet 202 and then be discharged to the inner side of the biogas pipe 3 through the exhaust control shell 201, and finally stored by the biogas storage device.

[0054] It should be noted that the speed of biogas passing through the air inlet 202 is lower than the speed of biogas slurry flowing between the pneumatic diaphragm regulating cone valve A4 and the main feed pipe 5 .

[0055] In an optional embodiment, when the liquid level of the solid-liquid mixture is exactly at the half position of the discharge end of the auxiliary feed branch pipe 7, the buoyancy of the solid-liquid mixture on the floating block 205 can just make the plugging head 203 contact and seal with the inner wall of the exhaust control housing 201.

[0056] In this embodiment: that is to say, when the liquid level of the solid-liquid mixture is exactly at the half position of the discharge end of the auxiliary feed branch pipe 7, the buoyancy generated by the solid-liquid mixture on the floating block 205 causes the floating block 205 to move upward, and the movement of the floating block 205 will drive the installation bracket 204 to move, and the movement of the installation bracket 204 will drive the plugging head 203 to move upward, and the plugging head 203 will move upward to contact and seal the inner wall of the exhaust control housing 201.

[0057] In an optional embodiment, the floating block 205 is a ring-shaped structure, and the notch of the floating block 205 is directly opposite to the discharge end of the auxiliary feed branch pipe 7.

[0058] In this embodiment, the notch of the floating block 205 can prevent the solid-liquid mixture from directly falling onto the floating block 205 when the solid-liquid mixture is added through the auxiliary feed branch pipe 7 .

[0059] In an optional embodiment, a limiting groove 208 is provided on the inner side of the outer circle of the floating block 205 , and a limiting strip 209 is fixedly connected to the inner wall of the gas collecting shell 2 , and the limiting strip 209 can slidably cooperate with the limiting groove 208 provided on the floating block 205 .

[0060] In this embodiment: by cooperating with the limiting groove 208 and the limiting strip 209, the floating block 205 can be prevented from rotating inside the gas collecting housing 2. By fixing the counterweight body 2010 on the inside of the floating block 205, it can be achieved that when the plugging head 203 and the exhaust control housing 201 are too tightly matched, the plugging head 203 and the exhaust control housing 201 cannot be separated due to the light weight of the floating block 205. Therefore, the counterweight body 2010 is added to better separate the plugging head 203 and the exhaust control housing 201.

[0061] By fixing a connecting bracket 206 between the outer side of the bottom of the exhaust control shell 201 and the inner wall of the gas collecting shell 2, and opening a discharge hole 207 at the bottom of the exhaust control shell 201, this arrangement can increase the stability of the exhaust control shell 201 installed inside the gas collecting shell 2. Through the opened discharge hole 207, the liquid, solid or solid-liquid mixture entering the exhaust control shell 201 can be discharged to avoid accumulation on the inner side of the exhaust control shell 201. Therefore, the diameter of the discharge hole 207 should be larger than the diameter of the air inlet hole 202.

[0062] In an optional embodiment, a mining intrinsically safe Hall sensor 2011 is fixedly installed on the inner side of one end of the floating block 205 , and a magnet 2012 is fixedly connected to the inner side of one end of the limiting bar 209 .

[0063] In the present embodiment: the model of the intrinsically safe Hall sensor 2011 for mining can be |GH-24ZD| intrinsically safe Hall sensor 2011 for mining; according to the above working principle, when the connecting bracket 206 drives the sealing head 203 to contact and seal the inner wall of the exhaust control housing 201 through the transmission of the mounting bracket 204, the intrinsically safe Hall sensor 2011 for mining on the inner side of the connecting bracket 206 corresponds to the magnet 2012 arranged on the inner side of the limit strip 209, so that the intrinsically safe Hall sensor 2011 for mining at this time will generate an electrical signal. After obtaining the electrical signal, it can be selected whether to supplement the reaction tank 1 with a solid-liquid mixture by controlling the pneumatic diaphragm to adjust the conical valve C8.

[0064] In an optional embodiment, the reaction tank 1 includes a tank top 101 and a tank bottom 102, and a plurality of annular tank walls 103 are arranged between the tank top 101 and the tank bottom 102. The plurality of tank walls 103, and the tank walls 103 and the tank top 101 and the tank bottom 102 are all fixed by annular grooves arranged on the fixing ring 104.

[0065] In this embodiment: Figure 6 As shown, the cross section of the fixing ring 104 is an H-shaped structure, so annular grooves are provided on both the upper and lower sides of the fixing ring 104, and a sealing ring or a sealing gasket can be installed in the groove of the fixing ring 104 to increase the sealing performance.

[0066] In an optional embodiment, a reinforcement sleeve 105 is fixedly connected to the outer side of one end of the tank top 101 and the tank bottom 102, and a plurality of fixed brackets 106 are fixedly connected to the outer side of one end of the reinforcement sleeve 105 at equal intervals. The two corresponding fixed brackets 106 above and below are fixedly connected to a fastening rope 107, and the two fastening ropes 107 located on the same straight line are fixedly connected to the two ends of the screw tensioner 108 respectively.

[0067] In this embodiment: the reinforcing sleeve 105 can better disperse the pressure of the fixing bracket 106 on the tank top 101 and the tank bottom 102, and the tension of the fastening rope 107 is adjusted by the screw tensioner 108. The tension provided by the fastening rope 107 can realize that the tank top 101 and the tank bottom 102 tightly press and fix the plurality of tank walls 103 together;

[0068] It should be noted that the side wall of the reaction tank 1 is finally formed by the mutual cooperation of a plurality of tank walls 103 , and in this way the overall height of the reaction tank 1 can be adjusted according to demand.

[0069] In an optional embodiment, the shell materials of the tank top 101, the tank bottom 102, the tank wall 103 and the gas collecting shell 2 are all made of two layers of wooden boards 1010 sandwiching a layer of steel plate 109 and fixed together, and the tank top 101, the tank bottom 102, the tank wall 103 and the inner wall of the gas collecting shell 2 are all sprayed with anti-corrosion paint.

[0070] In this embodiment: during the process of generating biogas, the solid-liquid mixture will corrode the steel plate 109. Therefore, by fixing a layer of steel plate 109 between two layers of wooden boards 1010, the structural strength can be improved and the corrosion of the steel plate 109 by the solid-liquid mixture can be avoided. Even so, it is still necessary to spray anti-corrosion paint on the tank top 101, tank bottom 102, tank wall 103 and the inner wall of the gas collecting shell 2.

[0071] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A continuous reaction sewage treatment device, comprising a reaction tank (1) and a tank support for the reaction tank (1) placed on the ground, characterized in that: The top of the reaction tank (1) is fixedly connected to a gas collecting shell (2), the top of the gas collecting shell (2) is fixedly connected to a normally closed electromagnetic valve (21), the top of the gas collecting shell (2) is fixedly connected to a biogas pipe (3), the bottom of the reaction tank (1) is fixedly connected to a pneumatic diaphragm regulating cone valve A (4), the bottom of the pneumatic diaphragm regulating cone valve A (4) is fixedly connected to a main feed pipe (5), and the discharge end of the main feed pipe (5) is fixedly connected to a pneumatic diaphragm regulating cone valve B (6); An auxiliary feed branch pipe (7) with an upwardly inclined discharge end is fixedly connected to the side wall of the gas collecting housing (2); one end of the auxiliary feed branch pipe (7) is fixedly connected to a pneumatic diaphragm regulating cone valve C (8); The reaction tank (1) is fed with material from the bottom of the reaction tank (1) through the main feed pipe (5) during the first feeding, and is supplemented with material through the auxiliary feed branch pipe (7) during the subsequent feeding.

2. The continuous reaction sewage treatment equipment according to claim 1, characterized in that: The feed end of the auxiliary feed branch pipe (7) is fixedly connected to the auxiliary feed main pipe (9); the reaction tank (1), the gas collecting shell (2), the normally closed electromagnetic valve (21), the pneumatic diaphragm regulating cone valve A (4), the auxiliary feed branch pipe (7) and the pneumatic diaphragm regulating cone valve C (8) form a complete set of reaction equipment; a plurality of complete sets of reaction equipment share a biogas pipe (3), an auxiliary feed main pipe (9) and a main feed pipe (5) for cyclic reaction.

3. The continuous reaction sewage treatment equipment according to claim 1 or 2, characterized in that: A trumpet-shaped exhaust control shell (201) with a small top and a large bottom is fixedly connected to the inner side of the top of the gas collecting shell (2); one end of the exhaust control shell (201) extending to the outer side of the gas collecting shell (2) is fixedly connected to the inner side of one end of the biogas pipe (3); an air inlet hole (202) is provided on the exhaust control shell (201) located in the internal space of the gas collecting shell (2); a plugging head (203) is contacted and connected to the inner wall of the exhaust control shell (201); a mounting bracket (204) is fixedly connected to the bottom of the plugging head (203); the outer side of one end of the mounting bracket (204) is slidably connected to the inner side of the bottom of the exhaust control shell (201); and a floating block (205) is fixedly connected to the bottom of the mounting bracket (204).

4. The continuous reaction sewage treatment equipment according to claim 3 is characterized in that: When the liquid level of the solid-liquid mixture is exactly at the half position of the discharge end of the auxiliary feed branch pipe (7), the buoyancy of the solid-liquid mixture on the floating block (205) is just enough to make the plugging head (203) contact and seal with the inner wall of the exhaust control housing (201).

5. The continuous reaction sewage treatment equipment according to claim 4 is characterized in that: The floating block (205) is a ring-shaped structure, and the notch of the floating block (205) is directly opposite to the discharge end of the auxiliary feed branch pipe (7).

6. The continuous reaction sewage treatment equipment according to claim 4 or 5, characterized in that: A limiting groove (208) is provided on the inner side of the outer circle of the floating block (205), and a limiting strip (209) is fixedly connected to the inner wall of the gas collecting shell (2), and the limiting strip (209) can be slidably matched with the limiting groove (208) provided on the floating block (205).

7. The continuous reaction sewage treatment equipment according to claim 6, characterized in that: A mining intrinsically safe Hall sensor (2011) is fixedly installed on the inner side of one end of the floating block (205), and a magnet (2012) is fixedly connected to the inner side of one end of the limit bar (209).

8. The continuous reaction sewage treatment equipment according to claim 1, characterized in that: The reaction tank (1) comprises a tank top (101) and a tank bottom (102), a plurality of annular tank walls (103) are arranged between the tank top (101) and the tank bottom (102), and the plurality of tank walls (103), the tank walls (103) and the tank top (101), and the tank bottom (102) are all fixed by means of annular grooves arranged on a fixing ring (104).

9. The continuous reaction sewage treatment equipment according to claim 8, characterized in that: A reinforcement sleeve (105) is fixedly connected to the outer side of one end of the tank top (101) and the tank bottom (102); a plurality of fixed brackets (106) are fixedly connected to the outer side of one end of the reinforcement sleeve (105) at equal intervals; two corresponding fixed brackets (106) are fixedly connected to tightening ropes (107) on the upper and lower sides; and two tightening ropes (107) located on the same straight line are fixedly connected to the two ends of a screw tightener (108) respectively.

10. The continuous reaction sewage treatment equipment according to claim 9, characterized in that: The shell materials of the tank top (101), tank bottom (102), tank wall (103) and gas collecting shell (2) are all made by sandwiching a layer of steel plate (109) between two layers of wooden boards (1010) and fixing them together. The inner wall of the tank top (101), tank bottom (102), tank wall (103) and gas collecting shell (2) are all sprayed with anti-corrosion paint.

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