CN112178230A

CN112178230A - Dry fermentation device for treating dewatered sludge

Info

Publication number: CN112178230A
Application number: CN202011053489.0A
Authority: CN
Inventors: 欧阳梅; 郑重; 林伟稳; 谢锦彪; 张雪; 罗靖; 刘晓珊; 黄洁阳; 邢路; 杨俐佳
Original assignee: International Innovation Research Institute Of Huizhou Harbin Institute Of Technology
Current assignee: OU YANGMEI
Priority date: 2020-09-29
Filing date: 2020-09-29
Publication date: 2021-01-05
Anticipated expiration: 2040-09-29
Also published as: CN112178230B

Abstract

The invention provides a dry fermentation device for treating dewatered sludge, which comprises: jar, valve and tubing pump are tamed to the bacterial, and the output of bacterial tame jar communicates with the input of valve, and the input of tubing pump communicates with the output of valve, and the valve includes: disk seat, flashboard, valve gap, valve rod, locating lever and a plurality of elastic component. The valve seat is provided with a valve groove, and the flashboard is inserted in the valve groove and is in sliding connection with the valve seat. The valve cover is provided with a rubber layer which is abutted against the end face of the valve seat. The valve cover is provided with an adjusting groove, and the valve rod is inserted in the adjusting groove and is in sliding connection with the valve cover. Each elastic member is accommodated in the valve spool. One end of the elastic piece is connected with the flashboard, and the other end of the elastic piece is connected with the connecting part. This handle dry fermentation device of dehydration mud passes through the valve, has controlled the outflow of the infiltration liquid measure of strain domestication jar, and is difficult for causing the siltation, and has promoted the treatment effeciency of dehydration mud.

Description

Dry fermentation device for treating dewatered sludge

Technical Field

The invention relates to the technical field of sludge treatment, in particular to a dry fermentation device for treating dewatered sludge.

Background

The dewatered sludge is the sludge after the flocculation treatment of the sludge of a sewage treatment plant, the water content is about 80 percent, and the dewatered sludge can be used as an available biomass resource. The sewage treatment industry in China is rapidly developed to generate a large amount of dewatered sludge, but the dewatered sludge has poor hydrophilicity, poor liquidity, high possibility of putrefaction and high treatment difficulty.

Chinese patent 2015105596720 discloses a dry fermentation device for treating dewatered sludge, which comprises a fermentation tank body, a percolate recovery and bacteria liquid spraying system, a three-stage spiral feeding system and a negative pressure discharging system. The method has the advantages that the dewatered sludge is fed in a three-stage spiral feeding mode, the fermented residues are discharged by the aid of the negative-pressure discharging system at the other end of the dewatered sludge, material changing is completed, feeding and discharging difficulty is reduced, percolate is recycled, bacteria liquid is sprayed and stirred to be matched with a dry fermentation technology, the dewatered sludge and strains can be fully contacted, heat and mass transfer is uniform, gas yield is improved, water consumption is greatly reduced, and resource utilization rate is high.

However, in the dry fermentation device for treating dewatered sludge, the process that the percolate in the dewatered sludge at the lower part of the percolation plate is conveyed and stored in the strain acclimation tank through the percolation collecting pipe is often that the strain acclimation tank cannot collect more abundant percolate and then conveys the percolate to the second pipeline pump, at the moment, a valve is required to be added between the strain acclimation tank and the second pipeline pump to control the outflow of the percolate amount of the strain acclimation tank, but because the percolate is often turbid sewage, the turbid sewage is often deposited on the valve when passing through the valve, the tightness of the gate valve is further influenced, the valve is blocked for a long time, and the dry fermentation device is not favorable for long-time operation.

Disclosure of Invention

In view of the above, it is necessary to provide a dry fermentation apparatus for treating dewatered sludge, which is directed to the technical problem of easy sludge deposition.

A dry fermentation apparatus for treating dewatered sludge comprising: bacterial acclimatization jar, valve and tubing pump, the output of bacterial acclimatization jar with the input intercommunication of valve, the input of tubing pump with the output intercommunication of valve, the valve includes: disk seat, flashboard, valve gap, valve rod, locating lever and a plurality of elastic component. The valve seat is provided with a valve groove, and the valve groove is respectively communicated with the input end and the output end of the valve seat. The gate plate is inserted into the valve groove and is in sliding connection with the valve seat, the bottom end of the gate plate is abutted to the inner side wall of the valve seat, the gate plate is used for blocking the input end and the output end of the valve seat, the input end of the valve seat is communicated with the output end of the strain acclimatization tank, and the output end of the valve seat is communicated with the input end of the pipeline pump. The valve comprises a valve seat and a valve cover, wherein a connecting part is arranged in the middle area of the valve cover, a thread ridge is arranged on the outer side surface of the connecting part, a thread groove is formed in the inner side wall of the valve seat, the thread ridge is matched with the thread groove, and the connecting part is inserted in the valve groove and is in threaded connection with the valve seat. The end face, facing the valve seat, of the valve cover is provided with a rubber layer, the rubber layer is arranged around the connecting portion, and the rubber layer is abutted to the end face, located at the valve groove, of the valve seat. The valve rod is inserted into the adjusting groove and is in sliding connection with the valve cover, the end part of the valve rod is connected with the flashboard, and one end, far away from the flashboard, of the valve rod is provided with a handle. The valve rod is provided with a brake opening hole and a brake closing hole, and the brake closing hole is positioned at one side adjacent to the handle. The valve cover is provided with a fixing part adjacent to the adjusting groove, the side face of the fixing part is provided with a fixing hole, the fixing hole is respectively matched with the opening hole and the closing hole, the positioning rod is inserted in the fixing hole and the closing hole, and the positioning rod is respectively connected with the valve cover and the valve rod. Each elastic piece is accommodated in the valve groove. One end of the elastic piece is connected with the flashboard, and the other end of the elastic piece is connected with the connecting part. Each elastic piece is in elastic deformation and has elastic force for pulling the flashboard to move close to or away from the valve cover.

In one embodiment, a plurality of first limiting grooves are formed in one surface, facing the gate plate, of the connecting portion, and each elastic member is inserted into one of the first limiting grooves and connected with the valve cover.

In one embodiment, a plurality of second limiting grooves are formed in one surface, facing the connecting portion, of the gate plate, and each elastic member is inserted into one of the second limiting grooves and connected with the gate plate.

In one embodiment, each of the resilient members is evenly distributed around the valve stem.

In one embodiment, the gate plate is opened with a fastening groove, and an end of the valve rod is inserted into the fastening groove and is screwed with the gate plate.

In one embodiment, the bottom end of the shutter is provided with a sealing layer, and the sealing layer is abutted with the inner side wall of the valve seat.

In one embodiment, a sliding block is arranged on a side wall of the gate plate, a sliding groove is formed in the inner wall of the valve seat, the sliding block is matched with the sliding groove, and the sliding block is contained in the sliding groove and is in sliding connection with the valve seat.

In one embodiment, the projection of the valve cover in the vertical direction is hexagonal.

In one embodiment, the positioning rod is screwed with the valve rod and the valve cover respectively.

In one embodiment, the handle is provided with a sheath.

Above-mentioned dry fermentation device who handles dehydration mud blocks the input of disk seat and the intercommunication of output through the flashboard, and the bottom through the flashboard is sealed in order to realize with the inside wall butt of disk seat, and it is not to set up the spacing recess to the flashboard in the disk seat to make silt can not pile up the butt department between flashboard and disk seat. When the shutter is lifted, the sludge will leave with the flow of the body of water. After the positioning rod is taken out, the valve rod is pulled to lift the flashboard, so that the input end of the valve seat is communicated with the output end. The opening state of the gate valve can be maintained by inserting the positioning rod into the fixing hole and the gate opening hole. Each elastic element provides assistance for the closing action of a user so as to facilitate the user to resist the water flow resistance in the valve seat. The threaded connection between the valve cover and the valve seat can be released by screwing the valve cover, so that the flashboard, the valve cover, the valve rod and the elastic pieces can be taken out from the valve seat, and the valve cover, the valve rod and the elastic pieces are simple and convenient to install and disassemble. This handle dry fermentation device of dehydration mud passes through the valve, has controlled the outflow of the infiltration liquid measure of strain domestication jar, and is difficult for causing the siltation, and has promoted the treatment effeciency of dehydration mud.

Drawings

FIG. 1 is a schematic view showing a partial structure of a dry fermentation apparatus for treating dewatered sludge in one embodiment;

FIG. 2 is a schematic diagram of the valve according to one embodiment;

FIG. 3 is a sectional view of the valve according to one embodiment;

fig. 4 is another structural sectional view of the valve in one embodiment.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

Referring to fig. 1 to 4 together, the present invention provides a dry fermentation apparatus for treating dewatered sludge, comprising: bacterial domestication jar 15, valve 90 and tubing pump 16, the output of bacterial domestication jar 15 and the input of valve 90 communicate, and the input of tubing pump 16 and the output of valve 90 communicate. The valve 90 includes: valve seat 100, flashboard 200, valve gap 300, valve rod 400, locating rod 500 and a plurality of elastic members 600. The valve seat 100 is provided with a valve groove 110, and the valve groove 110 is respectively communicated with the input end and the output end of the valve seat 100. The gate plate 200 is inserted into the valve groove 110 and slidably connected to the valve seat 100, a bottom end of the gate plate 200 abuts against an inner side wall of the valve seat 100, and the gate plate 200 is used for blocking an input end and an output end of the valve seat 100. That is, as shown in fig. 2, the shutter plate 200 is used to block the flow of liquid from the input end on the left side of the valve seat 100 to the output end on the right side of the valve seat 100, the input end of the valve seat 100 is communicated with the output end of the strain acclimation tank 15, and the output end of the valve seat 100 is communicated with the input end of the pipe pump 16. The middle region of the valve cover 300 is provided with a connecting portion 310, the outer side surface of the connecting portion 310 is provided with a threaded ridge 311, the valve seat 100 is provided with a threaded groove 111 on the inner side wall of the valve groove 110, the threaded ridge 311 is matched with the threaded groove 111, and the connecting portion 310 is inserted into the valve groove 110 and is in threaded connection with the valve seat 100. The end surface of the valve cover 300 facing the valve seat 100 is provided with a rubber layer 320, the rubber layer 320 is disposed around the connecting portion 310, and the rubber layer 320 abuts against the end surface of the valve seat 100 at the valve groove 110. The middle region of the valve cap 300 is provided with an adjusting groove 330, the adjusting groove 330 penetrates through the valve cap 300, the valve rod 400 is inserted into the adjusting groove 330 and is slidably connected with the valve cap 300, the end of the valve rod 400 is connected with the gate plate 200, and one end of the valve rod 400, which is far away from the gate plate 200, is provided with a handle 410. The stem 400 defines an opening hole 420 and a closing hole 430, and the closing hole 430 is located on a side of the stem 400 adjacent to the handle 410. The valve cap 300 is provided with a fixing portion 340 adjacent to the adjustment groove 330, a fixing hole 341 is formed in a side surface of the fixing portion 340, the fixing hole 341 is respectively matched with the opening hole 420 and the closing hole 430, the positioning rod 500 is inserted into the fixing hole 341 and the closing hole 430, and the positioning rod 500 is respectively connected with the valve cap 300 and the valve rod 400. Each elastic member 600 is received in the valve spool 110. One end of the elastic member 600 is connected to the shutter 200, and the other end of the elastic member 600 is connected to the connection part 310. Each elastic member 600 is elastically deformed and has an elastic force to pull the shutter 200 to move close to the bonnet 300.

Above-mentioned dry fermentation device who handles dehydration mud blocks the intercommunication of the input of disk seat 100 and output through flashboard 200, and the bottom through flashboard 200 is in order to realize sealing with the inside wall butt of disk seat 100, does not have the spacing recess that sets up flashboard 200 in the disk seat 100 to make silt can not pile up the butt department between flashboard 200 and disk seat 100. When the gate 200 is lifted, the sludge will leave with the flow of the body of water. When the positioning rod 500 is removed, the gate 200 is lifted by pulling the valve stem 400, thereby allowing the input end and the output end of the valve seat 100 to communicate. The gate valve can be maintained in the open state by inserting the positioning rod 500 into the fixing hole 341 and the opening hole 420. Each resilient member 600 provides assistance to the user in closing the valve to facilitate the user's resistance to water flow within the valve seat 100. The screwing relationship between the valve cover 300 and the valve seat 100 can be released by screwing the valve cover 300, so that the gate plate 200, the valve cover 300, the valve rod 400 and the plurality of elastic members 600 can be taken out from the valve seat 100, and the installation and disassembly operations are simple and convenient. This handle dry fermentation device of dehydration mud passes through the valve, has controlled the outflow of the infiltration liquid measure of strain domestication jar, and is difficult for causing the siltation, and has promoted the treatment effeciency of dehydration mud.

It should be noted that, the present application is developed and improved on the basis that chinese invention patent 2015105596720 discloses a dry fermentation device for treating dewatered sludge, and because the patent describes in detail other components and functions of the dry fermentation device for treating dewatered sludge, which are not related to the present application, the present application is not repeated, but focuses on the technical improvement after adding a valve between a strain acclimation tank and a second pipeline pump and further optimizes the strain acclimation tank, and the other dry fermentation components can refer to the specification of chinese invention patent 2015105596720.

The strain acclimatization tank is an important facility in a dry fermentation device for treating the dewatered sludge, and is responsible for mixing and blending the percolate with strains and methane bacteria, so that the mixed percolate is uniform and can be uniformly sprayed in the dewatered sludge in the fermentation tank body after passing through a spray pipe and a spray header, and the dewatered sludge is fully contacted with the strains. In one embodiment, the strain acclimatization tank comprises a tank body, a mixing tank, a mixing stirrer, a stirring paddle, a motor, a waste gas filtering cover, a liquid inlet, a first exhaust pipe, a small steel ball, a connecting pipe, a valve gate, a storage tank, an air flow stirrer, an exhaust hole, a liquid outlet, a valve gate controller, a second exhaust pipe, a control device and a fixed support, wherein the fixed support is fixedly arranged at the bottom of the tank body, the device can be fixed by arranging the fixed support at the bottom of the tank body, the installation height of the device can be adjusted by the fixed supports with different heights, the mixing tank is fixedly arranged above the inner part of the tank body, the bottom of the mixing tank is arc-shaped, the connecting pipe is arranged at the lowest point of the arc, the impurity in sewage is prevented from precipitating by arranging the arc-shaped bottom, the sewage treatment effect is influenced, the mixing stirrer is arranged on the inner wall of, the small steel balls are fixedly arranged between the mixing tank and the mixing stirrer, the multi-layer circular arc-shaped clamping grooves are arranged on the connection surface of the mixing tank and the mixing stirrer, so that the small steel balls can be clamped between the mixing tank and the mixing stirrer, the mixing stirrer can rotate in the mixing tank by arranging the clamping grooves and the small steel balls, the inner wall of the mixing stirrer is fixedly provided with a stirring paddle, the inner wall of the mixing stirrer is provided with a plurality of stirring paddles, so that the efficiency of the mixing stirrer is higher, the top axle center of the mixing tank is fixedly provided with a motor, the motor is used for driving the device by arranging the motor, one side of the motor on the top of the mixing tank is fixedly provided with a liquid inlet, the other side of the motor on the top of the mixing tank is fixedly provided with a first exhaust pipe, the liquid inlet and the first exhaust pipe penetrate through the circular arc-shaped top of the tank body and are communicated with the mixing, thereby leading the sewage to smoothly enter the device, leading the waste gas generated in the stirring process of the sewage to be discharged out of the tank body, fixedly communicating the bottom of the mixing tank with a connecting pipe, leading the mixing tank to be communicated with the storage tank by arranging the connecting pipe at the bottom of the mixing tank, fixedly arranging a valve gate above the connecting pipe, controlling the flow of the sewage by fixedly arranging the valve gate above the connecting pipe, fixedly communicating the bottom of the connecting pipe with the storage tank, fixedly arranging an airflow stirrer at the bottom of the storage tank, fixedly arranging an exhaust hole on the surface of the airflow stirrer, leading the airflow to stir the sewage from bottom to top by arranging the airflow stirrer at the bottom of the storage tank, leading the magazines in the sewage to be downwards precipitated, leading the airflow stirrer arranged at the bottom of the storage tank to achieve better homogenization effect, and fixedly arranging a liquid outlet at the position of the side surface of the storage tank, one side of the connecting pipe at the top of the storage tank is fixedly provided with a valve gate controller, the valve gate fixedly arranged above the connecting pipe is accurately controlled by the valve gate controller, the other side of the connecting pipe at the top of the storage tank is fixedly provided with a second exhaust pipe, the gas generated in the stirring process of the sewage in the storage tank is discharged by the second exhaust pipe fixedly arranged at the other side of the connecting pipe at the top of the storage tank, the tops of the first exhaust pipe and the second exhaust pipe are both provided with exhaust gas filtering covers, the discharged exhaust gas can be filtered by the exhaust gas filtering covers arranged at the tops of the first exhaust pipe and the second exhaust pipe, the pollution to the environment caused by the direct discharge of the exhaust gas is prevented, one side of the surface of the tank body far away from the second exhaust pipe is fixedly provided with a control device, and the control device is arranged on the surface of the tank body, and, secondly can control valve floodgate controller to the time that the control valve floodgate opened and shut, thereby the size of opening controls the flow of sewage, and the device is through setting up blending tank and holding vessel, makes the sewage in the entering device carry out a lot of mixes, makes the mixing of sewage more even, and sewage post treatment is more thorough, reduces the environmental impact.

When the strain acclimation tank is used, the liquid inlet is firstly connected with the percolate collecting pipe, so that sewage, namely percolate, enters the interior of the sewage mean value device, by operating the control device arranged on the surface of the tank body, firstly opening the mixing stirrer in the mixing tank, fully mixing the sewage with the strains containing the degradation flocculant and the methane bacteria in the mixing tank at a certain time interval, then controlling the valve gate controller by the control device to control the opening size of the valve gate, meanwhile, the airflow stirrer arranged at the bottom of the storage tank is opened to stir and mix the sewage again, when the tank body water blowing opening is connected with a sewage treatment device, a control valve can be additionally arranged, so that sewage enters a sewage treatment system after being fully and uniformly stirred in the sewage mean value device, and finally, the valve gate is opened after the strain acclimation tank runs for a period of time, and the strain acclimation tank also enters a normal working state.

So, this bacterial domestication jar is through the fixed blending tank that is equipped with in jar internal portion top, thereby it is higher to go to set up the sewage intensive mixing that mixes the agitator and make to get into the blending tank through the inside at the blending tank thereby make and mix agitator efficiency through the inner wall that sets up a plurality of stirring rakes at the blending agitator, thereby the sewage after obtaining mixing gets into the holding vessel through the connecting pipe, mix sewage once more at the air current agitator of holding vessel bottom through setting up, thereby make the sewage in the entering device carry out a lot of mixes, make the mixture of sewage more even, sewage post treatment is more thorough, reduce the environmental impact. Simultaneously, the bottom of blending tank is circular-arc, and the minimum department of circular arc is provided with the connecting pipe, prevents through setting up circular-arc bottom that the impurity in the sewage from deposiing, sets up the convex draw-in groove of multilayer through the face of linking at blending tank and mixing agitator to make the small steel ball can the joint between blending tank and mixing agitator, thereby can carry out rotary motion in the blending tank inside through setting up the mixed agitator that draw-in groove and small steel ball made, thereby make the device carry out mixing motion.

The valve seat 100 is used for connecting a front pipeline and a rear pipeline, an input end of the valve seat 100 is communicated with the front pipeline, in this embodiment, an input end of the valve seat 100 is communicated with an output end of the strain acclimation tank 15; the output end of the valve seat 100 is communicated with the next stage pipeline, and in this embodiment, the output end of the valve seat 100 is communicated with the input end of the pipeline pump 16. The valve housing 110 is provided with a shutter 200, and the flow of water is controlled by the shutter 200. The shutter 200 serves to block the input and output ends of the valve seat 100. The gate plate 200 is inserted into the valve groove 110 and slidably connected to the valve seat 100, and when the bottom end of the gate plate 200 abuts against the inner sidewall of the valve seat 100, the input end and the output end of the valve seat 100 are blocked by the gate plate 200.

In order to improve the sliding stability of the gate plate 200 and the valve seat 100, in one embodiment, a sliding block 230 is disposed on a side wall of the gate plate 200, a sliding groove 112 is formed in an inner wall of the valve seat 100 of the valve housing 110, the sliding block 230 is adapted to the sliding groove 112, and the sliding block 230 is received in the sliding groove 112 and is slidably connected to the valve seat 100. The chute 112 communicates with the valve spool 110. In this way, the movement of the shutter 200 is stabilized, thereby ensuring that the shutter 200 can be brought into effective abutting relationship with the valve seat 100. So, promoted the structural stability of valve. Meanwhile, since the chute 112 is communicated with the valve slot 110, when the gate plate 200 is lifted, the sludge collected in the chute 112 will leave the chute 112 along with the flow of the water, so that the sludge will not be accumulated in the chute 112, further reducing the probability of sludge deposition.

In order to improve the sealing property of the shutter 200 abutting against the valve seat 100, in one embodiment, the bottom end of the shutter 200 is provided with a sealing layer 210, and the sealing layer 210 abuts against the inner side wall of the valve seat 100. In this embodiment, the sealing layer 210 is a waterproof rubber ring. The sealing layer 210 has a deformable property, and can fill a gap when the gate valve abuts against the valve seat 100. Further, the outer side surface of the shutter 200 abuts against the side wall of the valve spool 110. Thus, the abutting tightness of the shutter 200 and the valve seat 100 is improved, and the sealing performance of the valve is improved.

The valve cover 300 is used for sealing the valve seat 100, and the valve cover 300 covers the valve groove 110, so as to seal the valve seat 100 and prevent water from overflowing. In this embodiment, the threaded rib 311 is matched with the threaded groove 111, and the valve cover 300 is fastened to the valve seat 100 by a threaded connection. In order to facilitate the user to screw the valve cap 300, in one embodiment, the projection of the valve cap 300 in the vertical direction is hexagonal. That is, the side portions of the valve cover 300 have a hexagonal structure. In this manner, the edge of the valve cap 300 provides a point of force for the user to turn the valve cap 300 by an external tool, such as a wrench to turn the valve cap 300. Thus, the convenience of assembling and disassembling the valve cover 300 is improved. The rubber layer 320 plays a role in waterproof sealing, and further prevents the possibility of water overflow, so that the waterproof performance of the valve is guaranteed.

The valve stem 400 is used to move the gate 200, thereby opening or closing the valve. The user pushes down by the above-mentioned to drive the shutter 200 to move, thereby causing the shutter 200 to communicate with or block the input end and the output end of the valve seat 100. In order to enhance the connection stability and the convenience of assembly and disassembly of the gate plate 200 and the valve stem 400, in one embodiment, the gate plate 200 is provided with a fastening groove 220, and an end portion of the valve stem 400 is inserted into the fastening groove 220 and is screwed with the gate plate 200. Thus, the connection stability of the shutter 200 and the valve stem 400 improves the convenience of detaching the shutter 200 and the valve stem 400. The handle 410 is arranged to provide convenience for a user to pull the valve rod 400, the handle 410 serves as a stress point, and the user pulls the valve rod 400 through the handle 410, so that the driving difficulty is reduced, and the driving convenience is improved. Further, to avoid a user being injured by the handle 410 during kicking of the handle 410, in one embodiment, the handle 410 is provided with a sheath 411. The sheath 411 is arranged to achieve a buffering protection effect. Thus, the safety performance of the valve is further improved.

The positioning rod 500 is used to maintain the open or closed state of the valve. When the bottom end of the shutter plate 200 abuts against the inner side wall of the valve seat 100, the shutter plate 200 blocks the input end and the output end of the valve seat 100, and at this time, the shutter closing hole 430 communicates with the fixing hole 341. The user may maintain the closed state of the gate valve by inserting the positioning rod 500 into the gate closing hole 430 and the fixing hole 341 so that the positional relationship between the valve stem 400 and the bonnet 300 is fixed. When the gate valve is lifted up and the opening hole 420 and the fixing hole 341 are correspondingly communicated, the user can insert the positioning rod 500 into the opening hole 420 and the fixing hole 341 to fix the positional relationship between the valve stem 400 and the bonnet 300, thereby maintaining the open state of the gate valve.

In order to enhance the connection stability of the positioning rod 500 to the valve stem 400 and the bonnet 300, respectively, when the positioning rod 500 is inserted into the closing hole 430 and the fixing hole 341, in one embodiment, the positioning rod 500 is screwed with the valve stem 400 and the bonnet 300, respectively. Thus, the relationship among the positioning rod 500, the valve rod 400 and the valve cap 300 is firm, and the structural stability of the valve is enhanced. Further, when the positioning rod 500 is inserted into the opening hole 420 and the fixing hole 341, the positioning rod 500 is screwed with the valve stem 400 and the bonnet 300, respectively. Thus, the structural stability of the valve is further improved.

The elastic member 600 is used to provide an assisting force to the closing action of the user so that the user can resist the resistance of the water flow in the valve seat 100. Each elastic member 600 is in elastic deformation, and the elastic member 600 has an elastic force to pull the shutter to move close to the bonnet 300, so that a user can push the shutter 200 to complete a closing operation. In addition, because the elastic acting force of each elastic member 600 for locating lever 500, valve rod 400 and valve gap 300 are in the butt state of tightening all the time, thereby avoid locating lever 500 to take place not hard up, avoid destroying the structural stability of this valve, have promoted the structural strength of this valve.

In order to limit the position of each elastic member 600 and prevent each elastic member 600 from separating and shaking, in one embodiment, a plurality of first limiting grooves 350 are formed on one surface of the connecting portion 310 facing the gate 200, and each elastic member 600 is inserted into one of the first limiting grooves 350 and connected to the valve cap 300. Further, one surface of the gate plate 200 facing the connecting portion 310 is provided with a plurality of second limiting grooves 240, and each elastic member 600 is inserted into one of the second limiting grooves 240 and connected to the gate plate 200. Thus, the first and second retaining

grooves

350 and 240 serve as position restrictions for the elastic member 600. Thus, the structural stability of the valve is improved.

In order to promote uniformity of the elastic force applied by each elastic member 600 to the shutter 200, in one embodiment, each elastic member 600 is uniformly distributed around the valve stem 400. Thus, the respective elastic forces are uniformly distributed. Therefore, the motion stability of the flashboard 200 is improved, and the working stability of the valve is improved.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. A dry fermentation apparatus for treating dewatered sludge comprising: a strain acclimatization tank, a valve and a pipeline pump, wherein the output end of the strain acclimatization tank is communicated with the input end of the valve, the input end of the pipeline pump is communicated with the output end of the valve,

the valve comprises: the valve comprises a valve seat, a flashboard, a valve cover, a valve rod, a positioning rod and a plurality of elastic pieces;

the valve seat is provided with a valve groove, and the valve groove is respectively communicated with the input end and the output end of the valve seat; the gate plate is inserted into the valve groove and is in sliding connection with the valve seat, the bottom end of the gate plate is abutted against the inner side wall of the valve seat, the gate plate is used for blocking the input end and the output end of the valve seat, the input end of the valve seat is communicated with the output end of the strain acclimatization tank, and the output end of the valve seat is communicated with the input end of the pipeline pump;

the middle area of the valve cover is provided with a connecting part, the outer side surface of the connecting part is provided with a threaded ridge, the inner side wall of the valve seat in the valve groove is provided with a threaded groove, the threaded ridge is matched with the threaded groove, and the connecting part is inserted into the valve groove and is in threaded connection with the valve seat; the end face, facing the valve seat, of the valve cover is provided with a rubber layer, the rubber layer is arranged around the connecting part, and the rubber layer is abutted against the end face, at the valve groove, of the valve seat;

an adjusting groove is formed in the middle area of the valve cover, the adjusting groove penetrates through the valve cover, the valve rod is inserted into the adjusting groove and is connected with the valve cover in a sliding mode, the end portion of the valve rod is connected with the flashboard, and a handle is arranged at one end, far away from the flashboard, of the valve rod;

the valve rod is provided with a brake opening hole and a brake closing hole, and the brake closing hole is positioned at one side adjacent to the handle; the valve cover is provided with a fixing part adjacent to the adjusting groove, the side surface of the fixing part is provided with a fixing hole, the fixing hole is respectively matched with the switch-on hole and the switch-off hole, the positioning rod is inserted into the fixing hole and the switch-off hole, and the positioning rod is respectively connected with the valve cover and the valve rod;

each elastic piece is accommodated in the valve groove; one end of the elastic piece is connected with the flashboard, and the other end of the elastic piece is connected with the connecting part; each elastic piece is in elastic deformation and has elastic force for pulling the flashboard to move close to the valve cover.

2. The dry fermentation device for treating dewatered sludge according to claim 1, wherein a plurality of first limiting grooves are formed in one surface of the connecting portion facing the shutter, and each elastic member is inserted into one of the first limiting grooves and connected with the valve cover.

3. The dry fermentation device for treating dewatered sludge according to claim 1, wherein a plurality of second limiting grooves are formed in one surface of the gate plate facing the connecting portion, and each elastic member is inserted into one of the second limiting grooves and connected with the gate plate.

4. The dry fermentation device for processing dewatered sludge of claim 1, wherein each of the elastic members is evenly distributed around the valve stem.

5. The dry fermentation device for treating dewatered sludge according to claim 1, wherein the gate plate is opened with a fastening groove, and an end of the valve rod is inserted into the fastening groove and screwed with the gate plate.

6. The dry fermentation device for treating dewatered sludge according to claim 1, wherein the bottom end of the shutter is provided with a sealing layer, and the sealing layer abuts against the inner side wall of the valve seat.

7. The dry fermentation device for treating dewatered sludge according to claim 1, wherein a slide block is disposed on a side wall of the gate plate, a slide groove is disposed on an inner wall of the valve seat, the slide block is adapted to the slide groove, and the slide block is accommodated in the slide groove and is slidably connected to the valve seat.

8. The dry fermentation device for treating dewatered sludge according to claim 1, wherein the projection of the valve cover in the vertical direction is hexagonal.

9. The dry fermentation device for treating dewatered sludge according to claim 1, wherein the positioning rod is screwed with the valve rod and the valve cover, respectively.

10. The dry fermentation device for treating dewatered sludge of claim 1, wherein the handle is provided with a sheath.