Water purification plant sludge treatment equipment with optimized dosing function

Abstract

The invention relates to the technical field of sludge dewatering, in particular to water purification plant sludge treatment equipment with an optimized dosing function. Comprising a chassis, the chassis is fixedly connected with a rack, the rack is fixedly connected with a fixing plate, and the fixing plate is fixedly connected with a collecting shell; the motor is fixedly connected to the rack, the fixing plate is rotationally connected with a centrifugal barrel, a plurality of water outlets are formed in the side wall of the centrifugal barrel, and a sludge outlet is formed in the lower side of the centrifugal barrel; and the electric telescopic rod is arranged on the rack, the telescopic end of the electric telescopic rod is rotationally connected with a connecting frame, the connecting frame is fixedly connected with an extrusion plate, and a first through hole is formed in the middle of the extrusion plate. Through extrusion of the extrusion plate and the first through holes in the extrusion plate, static sludge generates fluidity, the mixing degree of the sludge and a flocculating agent is improved, meanwhile, through reciprocating rotation of the guide plate, the sludge is stirred, the flocculating agent added into the centrifugal cylinder is dispersed more uniformly, uniform distribution of the flocculating agent in the sludge is facilitated, and the flocculation effect is improved. The dehydration efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of sludge dehydration, and in particular to sludge treatment equipment for a water purification plant with optimized dosing function. Background Art

[0002] Water treatment plant sludge refers to the by-product produced in the water treatment process, which mainly comes from the backwash process of sedimentation tanks, clarification tanks and filter tanks in the water treatment process. These sludges contain a variety of components, such as organic matter, inorganic matter, chemical precipitates, etc. If they are discharged directly into the environment, they will cause pollution to the soil, water bodies and air, and destroy the ecological balance. Therefore, the sludge needs to be processed.

[0003] The sludge treatment process includes: concentration, digestion, dehydration, drying, etc., among which dehydration is an important step in the sludge treatment process, the purpose of which is to reduce the volume and water content of the sludge. The sludge is usually dehydrated by a centrifuge, and flocculants are added to the sludge through a quantitative feeding device on the centrifuge to make it easier for solid particles in the sludge to gather together and accelerate the separation of solid particles and water in the sludge. However, the existing quantitative feeding device only puts the flocculant on the surface of the sludge, which makes it difficult to fully mix the flocculant with the sludge, resulting in some sludge unable to contact with the flocculant in time, affecting the dehydration effect of the sludge. Summary of the invention

[0004] In order to overcome the shortcomings mentioned in the above background, the present invention provides a sludge treatment equipment for a water purification plant with optimized dosing function.

[0005] Technical solution: A water treatment plant sludge treatment equipment with optimized dosing function, including: A chassis, the chassis is fixedly connected to a frame, the frame is provided with a quantitative unloading device, the frame is fixedly connected to a fixing plate, and the fixing plate is fixedly connected to a collecting shell; A motor is fixedly connected to the frame, the fixing plate is rotatably connected to a centrifugal cylinder, a side wall of the centrifugal cylinder is provided with a plurality of water outlets, a lower side of the centrifugal cylinder is provided with a mud outlet, and an output shaft of the motor is drivingly connected to the centrifugal cylinder; An electric telescopic rod is arranged on the frame, the telescopic end of the electric telescopic rod is rotatably connected to a connecting frame, the connecting frame is fixedly connected to an extrusion plate, the maximum diameter of the extrusion plate is equal to the inner diameter of the centrifugal cylinder, and a first through hole is opened in the middle of the extrusion plate.

[0006] Furthermore, the connecting frame is fixedly connected with a plurality of sliding pins, and the inner wall of the centrifugal cylinder is provided with inclined sliding grooves having the same number as the sliding pins, and the sliding pins slide in the inclined sliding grooves on adjacent centrifugal cylinders.

[0007] Furthermore, it also includes: There are several guide plates, all of which are fixedly connected to the extrusion plate and are used to enhance the stirring effect of the extrusion plate.

[0008] Furthermore, the shape of the extrusion plate is an inverted truncated cone ring, which is used to guide the sludge with high water content to flow around.

[0009] Furthermore, it also includes: The extrusion mechanism is arranged in the centrifugal drum and is used for extruding and dehydrating the sludge. The extrusion mechanism comprises: A sliding shell is slidably connected to the centrifugal cylinder, the sliding shell is composed of an inverted truncated cone shell and a circular ring, the maximum diameter of the inverted truncated cone shell of the sliding shell is equal to the inner diameter of the centrifugal cylinder, the sliding shell is provided with a second through hole, the second through hole of the sliding shell is connected to the mud outlet of the centrifugal cylinder, and a first elastic member is fixedly connected between the sliding shell and the centrifugal cylinder; A blocking ring is fixedly connected to the lower side of the extrusion plate, the blocking ring is communicated with the first through hole of the extrusion plate, the axis of the centrifugal cylinder mud outlet, the axis of the first through hole of the extrusion plate, the axis of the second through hole of the sliding shell and the axis of the blocking ring coincide, and the outer diameter of the blocking ring is equal to the inner diameter of the second through hole of the sliding shell; The collecting cylinder is fixedly connected to the chassis.

[0010] Furthermore, the inverted truncated cone-shaped shell of the sliding shell is provided with a plurality of circular filtering holes, and the lower side surface of the centrifugal cylinder is provided with a plurality of filtering holes.

[0011] Furthermore, the filter holes of the centrifugal barrel are inclined downward from a direction close to the axis of the centrifugal barrel to a direction away from the axis of the centrifugal barrel.

[0012] Furthermore, the inclination angle of the inverted truncated cone-shaped shell generatrix on the sliding shell is smaller than the inclination angle of the extruded plate generatrix.

[0013] Furthermore, it also includes: A locking assembly is provided on the centrifugal cylinder and is used to lock the position of the sliding shell according to the amount of squeezed sludge. The locking assembly comprises: A limit pin, fixedly connected to the sliding shell; There are several trapezoidal blocks, all of which are slidably connected to the mud outlet of the centrifugal cylinder. The projections of several trapezoidal blocks on the horizontal plane overlap. The limit pins are used to squeeze the inclined surfaces of the trapezoidal blocks. The trapezoidal blocks are used to limit the adjacent limit pins. A second elastic member is fixedly connected between the trapezoidal blocks and the centrifugal cylinder.

[0014] Furthermore, the trapezoidal block is fixedly connected with a plurality of extrusion columns, the mud outlet of the centrifugal cylinder is slidably connected with an extrusion frame, the extrusion frame is provided with inclined surfaces which are the same in number as the extrusion columns, and the inclined surfaces of the extrusion frame are used for extruding adjacent extrusion columns.

[0015] Compared with the prior art, the present invention has the following advantages: 1. The present invention makes the static sludge fluid through the extrusion of the extrusion plate and the first through hole thereon, thereby improving the mixing degree of the sludge and the flocculant. At the same time, the sludge is stirred through the reciprocating rotation of the guide plate, so that the flocculant added to the centrifugal cylinder is dispersed more evenly, which helps to evenly distribute the flocculant in the sludge and improve the dehydration efficiency.

[0016] 2. Under the action of the inverted truncated cone ring of the extrusion plate, after the sludge water content at the side wall of the centrifugal cylinder is low, the sludge with high water content in the middle of the centrifugal cylinder flows along the first through hole of the extrusion plate to the upper surface of the extrusion plate, and quickly flows to the side wall of the centrifugal cylinder after the mud cake is scraped off by the extrusion plate to dehydrate the sludge, thereby improving the sludge dehydration efficiency.

[0017] 3. The present invention squeezes water out of the sludge with low water content by squeezing the sludge with an extrusion plate. Compared with directly squeezing the sludge with high water content, squeezing the sludge with low water content effectively reduces the pressure required to squeeze water out of the sludge, reduces the wear on the squeezing plate, and improves the overall sludge dehydration efficiency.

[0018] 4. The present invention limits the adjacent limit pins by means of trapezoidal blocks, so that the sliding shell does not move upward, thereby reducing the impact on the space between the lower side of the extrusion plate and the upper side of the sliding shell when the overall water content of the sludge becomes lower and lower. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of the three-dimensional structure of the chassis and the fixing plate of the present invention; Figure 3 It is a three-dimensional structural schematic diagram of the connecting frame and the extruded plate of the present invention; Figure 4 It is a schematic diagram of the three-dimensional structure of the sliding shell and the collecting tube of the present invention; Figure 5 It is a schematic diagram of the three-dimensional structure of the motor and the guide plate of the present invention; Figure 6 It is a three-dimensional structural cross-sectional view of the centrifugal cylinder of the present invention; Figure 7 It is a three-dimensional structural cross-sectional view of the sliding shell and the blocking ring of the present invention; Figure 8 It is a schematic diagram of the three-dimensional structure of the fixing plate and the centrifugal cylinder of the present invention; Fig. 9 It is a schematic diagram of the three-dimensional structure of the limit pin and the trapezoidal block of the present invention; Fig.10 It is a schematic diagram of the three-dimensional structure of the extrusion column and the extrusion frame of the present invention.

[0020] Markings in the accompanying drawings: 1: chassis, 2: frame, 3: fixing plate, 301: collecting shell, 4: motor, 5: centrifugal cylinder, 6: electric telescopic rod, 7: connecting frame, 8: extrusion plate, 9: sliding pin, 10: guide plate, 1101: sliding shell, 1102: first elastic member, 1103: sealing ring, 1104: collecting cylinder, 1201: limiting pin, 1202: trapezoidal block, 1203: second elastic member, 1301: extrusion column, 1302: extrusion frame. DETAILED DESCRIPTION

[0021] The above solution is further described below in conjunction with specific embodiments.

[0022] Example 1: A sludge treatment equipment for a water treatment plant with optimized dosing function, such as Figure 1-Figure 8 As shown, it includes: a chassis 1, the chassis 1 is fixedly connected to a frame 2, the frame 2 is provided with a quantitative unloading device, the frame 2 is fixedly connected to a fixed plate 3, the fixed plate 3 is fixedly connected to a collecting shell 301; a motor 4 is fixedly connected to the frame 2, the fixed plate 3 is rotatably connected to a centrifugal cylinder 5, the side wall of the centrifugal cylinder 5 is provided with a plurality of water outlets, the lower side of the centrifugal cylinder 5 is provided with a mud outlet, and the output shaft of the motor 4 is drivingly connected to the centrifugal cylinder 5; an electric telescopic rod 6 is arranged on the frame 2, the telescopic end of the electric telescopic rod 6 is rotatably connected to a connecting frame 7, the connecting frame 7 is fixedly connected to an extrusion plate 8, the maximum diameter of the extrusion plate 8 is equal to the inner diameter of the centrifugal cylinder 5, and a first through hole is provided in the middle of the extrusion plate 8.

[0023] In the above scheme, the frame 2 is provided with a numerical control table, and the quantitative feeding device provided on the frame 2 is an existing device (its specific structure is not shown in the figure), which is used to quantitatively feed flocculants into the centrifugal cylinder. The fixing plate 3 is made of a hard material, such as carbon steel, and is used to provide a stable support force for the rotation of the centrifugal cylinder 5. The height of the collecting shell 301 is greater than the height of the uppermost water outlet of the centrifugal cylinder 5, which is used to ensure that the collecting shell 301 can collect the water escaping from the centrifugal cylinder 5. The motor 4 is electrically connected to the numerical control table on the frame 2, and the motor 4 and the centrifugal cylinder 5 are driven by a transmission member. The transmission member can be a gear set. The cross-section of the lower part of the centrifugal cylinder 5 is V-shaped, which is convenient for the dehydrated sludge to be discharged downward. The mud outlet of the centrifugal cylinder 5 is located in the middle of the lower side of the centrifugal cylinder 5. The mud outlet of the centrifugal cylinder 5 is provided with a solenoid valve. The solenoid valve is an existing device, and its specific structure is not shown in the figure. The solenoid valve on the centrifugal cylinder 5 is electrically connected to the CNC table on the frame 2, and the electric telescopic rod 6 is electrically connected to the CNC table on the frame 2. The shape of the extrusion plate 8 is an inverted truncated cone ring, which is used to make the sludge in the middle of the centrifugal cylinder 5 first contact with the first through hole on the extrusion plate 8.

[0024] like Figure 3-Figure 5 and Figure 7 As shown, the connecting frame 7 is fixedly connected with a plurality of sliding pins 9, and the inner wall of the centrifugal cylinder 5 is provided with an inclined slide groove having the same number as the sliding pins 9. The sliding pins 9 slide in the inclined slide grooves on the adjacent centrifugal cylinders 5. There are several guide plates 10, all of which are fixedly connected to the extrusion plate 8 to enhance the stirring effect of the extrusion plate 8. The extrusion plate 8 is in the shape of an inverted truncated cone ring to guide the sludge with high water content to flow around.

[0025] In the above scheme, the number of inclined grooves on the centrifugal barrel 5 is four, the connecting frame 7 is made of a hard material, such as carbon steel, to ensure its deformation resistance so that the sliding pin 9 is always located in the inclined groove of the centrifugal barrel 5, the number of sliding pins 9 is four, the sliding pin 9 is made of a hard and smooth material, such as stainless steel, to reduce the friction force generated by the sliding pin 9 sliding in the adjacent inclined grooves on the centrifugal barrel 5, and a plurality of guide plates 10 are located on the upper surface of the extrusion plate 8, the axis of the guide plate 10 deviates from the axis of the extrusion plate 8, and the plurality of guide plates 10 are evenly distributed circumferentially.

[0026] When the device is used to dehydrate sludge, the staff puts the sludge from above the centrifugal drum 5 onto the extrusion plate 8. At this time, the sludge has a high overall water content and strong fluidity. Then the sludge flows into the centrifugal drum 5 through the first through hole on the extrusion plate 8.

[0027] When the liquid level of the sludge in the centrifugal cylinder 5 reaches the contact with the lower side of the extrusion plate 8, the sludge is stopped from being added into the centrifugal cylinder 5, and then the flocculant is added from the top of the centrifugal cylinder 5 to the upper side of the extrusion plate 8 through the quantitative feeding device on the frame 2. Finally, the electric telescopic rod 6 is started through the numerical control table on the frame 2, and the telescopic end of the electric telescopic rod 6 drives the connecting frame 7 to move back and forth first downward and then upward.

[0028] When the telescopic end of the electric telescopic rod 6 drives the connecting frame 7 to move downward, the connecting frame 7 drives the squeezing plate 8 to move downward. In the process of the squeezing plate 8 moving downward, the sludge below the squeezing plate 8 continuously flows from the first through hole of the squeezing plate 8 to the upper side of the squeezing plate 8 along the lower side of the squeezing plate 8 under the squeezing of the squeezing plate 8, so that the sludge contacts the flocculant. The static sludge is made fluid by the squeezing of the squeezing plate 8, and the flow speed of the sludge is accelerated under the action of the first through hole on the squeezing plate 8, and the mixing degree of the sludge and the flocculant is improved. At the same time, in the process of the connecting frame 7 moving downward, the four sliding pins 9 are driven to slide in the inclined slide grooves on the adjacent centrifugal cylinders 5 respectively, so that the connecting frame 7 rotates clockwise (with the attached Figure 3Taking the top view as an example), the connecting frame 7 drives the extrusion plate 8 to rotate clockwise, and the extrusion plate 8 drives the plurality of guide plates 10 to rotate, so that the extrusion plate 8 is moved downward, and the sludge is stirred by the rotation of the guide plates 10, so that the flocculant added to the centrifugal cylinder 5 is dispersed more evenly, and as the extrusion plate 8 continues to move downward, the upper side surfaces of the plurality of guide plates 10 will move below the upper surface of the sludge, increasing the contact area between the guide plates 10 and the sludge, that is, the more the guide plates 10 move downward, the more the sludge is driven to rotate, which helps the sludge in the centrifugal cylinder 5 to form turbulent flow and accelerate the mixing speed of the flocculant in the sludge.

[0029] When the telescopic end of the electric telescopic rod 6 drives the connecting frame 7 to move upward, the connecting frame 7 drives the squeezing plate 8 to move upward, and the squeezing plate 8 moves upward, so that the sludge on the upper side of the squeezing plate 8 gradually flows to the bottom of the squeezing plate 8 through the through holes on the squeezing plate 8, so that the sludge flows in the centrifugal cylinder 5, which helps the flocculant to be more evenly dispersed in the sludge. At the same time, the connecting frame 7 drives the four sliding pins 9 to slide in the inclined slide grooves on the adjacent centrifugal cylinders 5, respectively, so that the connecting frame 7 rotates counterclockwise (with the adjacent Figure 3 Taking the top view as an example), the connecting frame 7 drives the extrusion plate 8 to rotate counterclockwise. By changing the rotation direction of the extrusion plate 8, the guide plates 10 drive the sludge in contact with them to rotate counterclockwise to form turbulence, thereby making the flocculant more quickly and evenly distributed in the sludge in the centrifugal cylinder 5. Subsequently, as the connecting frame 7 moves up and down, the above-mentioned actions are repeated continuously. At the same time, the guide plates 10 continuously switch between clockwise and counterclockwise rotation, which helps to evenly distribute the flocculant in the sludge and improve the dehydration efficiency.

[0030] After the flocculant and the sludge are mixed, the staff closes the electric telescopic rod 6 through the numerical control table on the frame 2, and then starts the motor 4 through the numerical control table on the frame 2. The output shaft of the motor 4 drives the centrifugal cylinder 5 to rotate through the transmission member. As the centrifugal cylinder 5 rotates, the water in the sludge is discharged through the water outlet on the centrifugal cylinder 5 and is collected by the collecting shell 301, thereby completing the dehydration treatment of the sludge.

[0031] After the dehydration of the sludge is completed, the staff turns off the motor 4 through the numerical control table on the frame 2. After the centrifugal drum 5 stops rotating, the staff opens the solenoid valve on the centrifugal drum 5 through the numerical control table on the frame 2, takes out the dehydrated sludge and cleans the centrifugal drum 5 and its accessories.

[0032] Embodiment 2: Based on embodiment 1, Figure 2-Figure 7As shown, it also includes: an extrusion mechanism, which is arranged in the centrifugal cylinder 5 and is used to extrude and dehydrate the sludge. The extrusion mechanism includes: a sliding shell 1101, which is slidably connected to the centrifugal cylinder 5. The sliding shell 1101 is composed of an inverted truncated cone shell and a circular ring. The maximum diameter of the inverted truncated cone shell of the sliding shell 1101 is equal to the inner diameter of the centrifugal cylinder 5. The inverted truncated cone shell of the sliding shell 1101 is provided with a plurality of filtering circular holes. The lower side of the centrifugal cylinder 5 is provided with a plurality of filtering holes. The filtering holes of the centrifugal cylinder 5 are inclined downward from the direction close to the axis of the centrifugal cylinder 5 to the direction away from the axis of the centrifugal cylinder 5. The sliding shell 1101 is provided with a plurality of filtering holes. The second through hole, the second through hole of the sliding shell 1101 is connected to the mud outlet of the centrifugal cylinder 5, and the first elastic member 1102 is fixedly connected between the sliding shell 1101 and the centrifugal cylinder 5; the sealing ring 1103 is fixedly connected to the lower side of the extrusion plate 8, the sealing ring 1103 is connected to the first through hole of the extrusion plate 8, the axis of the mud outlet of the centrifugal cylinder 5, the axis of the first through hole of the extrusion plate 8, the axis of the second through hole of the sliding shell 1101 and the axis of the sealing ring 1103 coincide, and the outer diameter of the sealing ring 1103 is equal to the inner diameter of the second through hole of the sliding shell 1101; the collecting cylinder 1104 is fixedly connected to the chassis 1.

[0033] In the above scheme, the first elastic member 1102 is a spring, and the number of the first elastic members 1102 is four. By setting the filter hole of the centrifugal barrel 5 to be inclined, the water entering the filter hole of the centrifugal barrel 5 is quickly discharged outward under the influence of the centrifugal force of the centrifugal barrel 5. The difference in the inclination angle between the inverted truncated cone shell generatrix on the sliding shell 1101 and the generatrix of the extrusion plate 8 is used to make the extrusion plate 8 squeeze the sludge in the centrifugal barrel 5, so that the sludge with low water content is restricted to a position close to the side wall of the centrifugal barrel 5, and will not flow to the middle. The collecting barrel 1104 is used to collect water discharged from the filter hole of the centrifugal barrel 5.

[0034] The action of rotating the centrifugal drum 5 in Example 1 to discharge the water in the sludge through the water outlet on the centrifugal drum 5 is repeated. After the centrifugal drum 5 rotates for a period of time, since the density of the solid particles in the sludge is greater than the density of the liquid, the solid particles in the sludge will cling to the side wall of the centrifugal drum 5 to form sludge with low water content (hereinafter referred to as mud cake) to hinder the flow of the liquid, thereby greatly reducing the dehydration efficiency of the sludge.

[0035] When the centrifugal drum 5 rotates, the centrifugal drum 5 drives the sliding shell 1101 to rotate. As the centrifugal drum 5 rotates continuously, the soil near the side wall of the centrifugal drum 5 will form a mud cake. The staff controls the electric telescopic rod 6 through the CNC table on the frame 2. The electric telescopic rod 6 drives the extrusion plate 8 to move downward through the connecting frame 7, repeating the action of the extrusion plate 8 moving downward in Example 1, but at this time the centrifugal drum 5 is in a rotating state, and the four inclined slide grooves on the side wall of the centrifugal drum 5 drive the connecting frame 7 to rotate clockwise through the four sliding pins 9, and the clockwise rotation of the connecting frame 7 takes the centrifugal drum 5 as a reference object. Under the influence of the mud cake on the side wall of the centrifugal drum 5, if the water in the sludge cannot be discharged through the water outlet on the side wall of the centrifugal drum 5 in time, the solid particles in the sludge will continue to move toward the side wall of the centrifugal drum 5, and then squeeze the water in the sludge to the middle part of the centrifugal drum 5, so that the sludge water content in the middle part increases, and at this time the extrusion plate 8 drives the sealing ring 1103 to move downward and rotate clockwise relative to the centrifugal drum 5, and scrapes the mud cake on the side wall of the centrifugal drum 5 downward.

[0036] When the middle and lower parts of the squeezing plate 8 and the sealing ring 1103 are both located below the upper surface of the sludge with high water content in the middle part of the centrifugal drum 5, due to the high water content of the sludge in the middle part of the centrifugal drum 5, the sludge has higher fluidity. Under the action of the inverted truncated cone ring of the squeezing plate 8, the principle of the communicating vessel is used to make the sludge with high water content in the middle part of the centrifugal drum 5 flow along the first through hole of the squeezing plate 8 to the upper surface of the squeezing plate 8. At this time, the squeezing plate 8 is in a rotating state, and the squeezing plate 8 drives a number of guide plates 10 to rotate, so that the sludge with high water content flowing to the upper surface of the squeezing plate 8 is driven by a number of guide plates 10 to quickly flow to the side wall of the centrifugal drum 5 after the mud cake is scraped by the squeezing plate 8 for sludge dehydration. At this time, the sludge contacting the side wall of the centrifugal drum 5 has a high water content and is not easy to form a mud cake on the side wall of the centrifugal drum 5. At the same time, the sludge with high water content is first contacted with the side wall of the centrifugal drum 5 to improve the dehydration efficiency.

[0037] As the squeezing plate 8 continues to move downward and rotate clockwise, the squeezing plate 8 drives the blocking ring 1103 to move downward and rotate clockwise, and the blocking ring 1103 gradually slides into the second through hole of the sliding shell 1101. At this time, the sludge on the side of the squeezing plate 8 cannot flow to the upper side of the squeezing plate 8 through the blocking ring 1103 and the first through hole on the squeezing plate 8. Then the squeezing plate 8 continues to move downward to squeeze the sludge between the lower side of the squeezing plate 8 and the sliding shell 1101. At the same time, the four first elastic members 1102 are compressed. Under the continuous squeezing of the squeezing plate 8, the squeezing Part of the water in the sludge between the lower side of the pressing plate 8 and the sliding shell 1101 flows into the collecting cylinder 1104 through the filtering circular holes of the sliding shell 1101 and the filtering holes on the lower side of the centrifugal cylinder 5, and the other part flows into the collecting shell 301 through the water outlet on the side wall of the centrifugal cylinder 5. The water in the mud cake is squeezed out by the squeezing plate 8. Compared with directly squeezing the sludge with high water content, squeezing the sludge with low water content effectively reduces the pressure required to squeeze water out of the sludge, reduces the wear on the squeezing plate 8, and improves the overall sludge dehydration efficiency.

[0038] When the sliding pin 9 slides to the lowermost side of the inclined slide groove on the centrifugal drum 5, the control personnel closes the electric telescopic rod 6 through the CNC table on the frame 2, and the centrifugal drum 5 continues to rotate to centrifugally dehydrate the sludge on the upper side of the extrusion plate 8. As the centrifugal drum 5 rotates, the sludge near the side wall of the centrifugal drum 5 forms a mud cake again. Then the staff controls the telescopic end of the electric telescopic rod 6 to move upward through the CNC table on the frame 2, and repeats the action of the extrusion plate 8 moving upward in Example 1. However, at this time, the centrifugal drum 5 is in a rotating state, and the four inclined slide grooves on the side wall of the centrifugal drum 5 drive the connecting frame 7 to rotate counterclockwise through the four sliding pins 9, and the counterclockwise rotation of the connecting frame 7 takes the centrifugal drum 5 as a reference object.

[0039] When the extrusion plate 8 moves upward and rotates counterclockwise to scrape the mud cake on the side wall of the centrifugal drum 5, the sliding shell 1101 moves upward and resets under the elastic force of the four first elastic members 1102, and the sludge with high water content in the middle of the upper side of the extrusion plate 8 flows to the bottom of the extrusion plate 8 through the first through hole and the sealing ring 1103 on the extrusion plate 8, and then moves around under the centrifugal force generated by the rotation of the sliding shell 1101 and the centrifugal drum 5 to contact the side wall of the centrifugal drum 5 after scraping the mud cake for dehydration.

[0040] When mud cake is continuously formed on the side wall of the centrifugal cylinder 5, by repeatedly repeating the upward and downward movement of the telescopic end of the electric telescopic rod 6 in this embodiment, the squeezing plate 8 continuously scrapes and collects the mud cake on the side wall of the centrifugal cylinder 5, thereby reducing the blocking area of ​​the mud cake on several water outlets on the side wall of the centrifugal cylinder 5, and the squeezing plate 8 continuously squeezes and dehydrates the sludge between the lower side of the squeezing plate 8 and the sliding shell 1101, thereby greatly improving the efficiency of sludge dehydration.

[0041] After the dehydration process of the sludge is completed, the staff controls the telescopic end of the electric telescopic rod 6 to return to the initial position through the numerical control table on the frame 2 and then closes the electric telescopic rod 6 .

[0042] Embodiment 3: Based on embodiment 2, Fig. 9 and Fig.10 As shown, it also includes: a locking component, which is arranged on the centrifugal cylinder 5 and is used to lock the position of the sliding shell 1101 according to the amount of squeezed sludge, and the locking component includes: a limit pin 1201, which is fixedly connected to the sliding shell 1101; a plurality of trapezoidal blocks 1202, which are all slidably connected to the mud outlet of the centrifugal cylinder 5, and the projections of the plurality of trapezoidal blocks 1202 on the horizontal plane overlap, the limit pin 1201 is used to squeeze the inclined surface of the trapezoidal block 1202, the trapezoidal block 1202 is used to limit the adjacent limit pins 1201, and a second elastic member 1203 is fixedly connected between the trapezoidal block 1202 and the centrifugal cylinder 5.

[0043] In the above scheme, the number of limit pins 1201 is two, and the number of trapezoidal blocks 1202 is six. The number of trapezoidal blocks 1202 and the spacing between two adjacent trapezoidal blocks 1202 can be adjusted according to the downward sliding distance of the sliding shell 1101 during actual use. The axis of the limit pin 1201 and the axis of symmetry of the trapezoidal block 1202 are located on the same vertical plane, which is used to prevent the trapezoidal block 1202 from experiencing stress concentration under the extrusion of the limit pin 1201. The second elastic member 1203 is a spring.

[0044] like Fig. 9 and Fig.10 As shown, the trapezoidal block 1202 is fixedly connected with a plurality of extrusion columns 1301 , and an extrusion frame 1302 is slidably connected to the mud outlet of the centrifugal cylinder 5 . The extrusion frame 1302 is provided with inclined surfaces having the same number as the extrusion columns 1301 , and the inclined surfaces of the extrusion frame 1302 are used to extrude adjacent extrusion columns 1301 .

[0045] In the above scheme, the trapezoidal block 1202 is fixed with two extrusion columns 1301 symmetrically distributed front and back, the number of inclined surfaces opened on the extrusion frame 1302 is six, and the distance from the front side to the rear side of the two extrusion columns 1301 on the same trapezoidal block 1202 is greater than the distance from the front side to the rear side of the extrusion frame 1302, which is used to ensure that the inclined surfaces of the extrusion frame 1302 apply a stable extrusion force to the adjacent extrusion columns 1301.

[0046] The action of squeezing the sludge between the lower side of the squeezing plate 8 and the sliding shell 1101 in Example 2 is repeated. As the squeezing plate 8 continuously scrapes the mud cake on the side wall of the centrifugal cylinder 5 and the overall water content of the sludge in the centrifugal cylinder 5 becomes lower and lower, the sludge between the lower side of the squeezing plate 8 and the sliding shell 1101 continues to increase. When the squeezing plate 8 squeezes the sludge between the lower side of the squeezing plate 8 and the sliding shell 1101, the distance that the sliding shell 1101 moves downward also continues to increase, which results in that when the squeezing plate 8 moves upward, after the sliding shell 1101 is reset under the action of the elastic force of the four first elastic members 1102, the space between the lower side of the squeezing plate 8 and the upper side of the sliding shell 1101 becomes smaller, affecting the flow of water in the sludge.

[0047] When the sliding shell 1101 is squeezed by the sludge between the lower side of the extrusion plate 8 and the sliding shell 1101, it moves downward. The downward movement of the sliding shell 1101 drives the two limit pins 1201 to move downward. The limit pins 1201 move downward to squeeze the adjacent trapezoidal blocks 1202. The trapezoidal blocks 1202 move toward the periphery under the squeezing of the adjacent limit pins 1201, and at the same time, the adjacent second elastic member 1203 is compressed.

[0048] When the limit pin 1201 passes through the adjacent trapezoidal block 1202, the trapezoidal block 1202 is reset under the action of the elastic force of the adjacent second elastic member 1203, and limits the adjacent limit pin 1201, locking the position of the adjacent limit pin 1201, so that when the extrusion plate 8 moves upward, the sliding shell 1101 will not move upward, thereby reducing the impact on the space size between the lower side of the extrusion plate 8 and the upper side of the sliding shell 1101 when the overall water content of the sludge becomes lower and lower.

[0049] As the amount of sludge with low water content between the lower side of the extrusion plate 8 and the upper side of the sliding shell 1101 continues to increase, the sliding shell 1101 continuously drives the two limit pins 1201 to move downward under the extrusion of the low water content sludge between the lower side of the extrusion plate 8 and the upper side of the sliding shell 1101, and continuously repeats the action of the limit pins 1201 squeezing the adjacent trapezoidal blocks 1202, continuously changing the locking position of the sliding shell 1101.

[0050] After completing the dehydration treatment of the sludge, the staff pulls down the two extrusion frames 1302, and the six inclined surfaces on the extrusion frames 1302 respectively squeeze the adjacent extrusion columns 1301, so that the three trapezoidal blocks 1202 slide toward the outer periphery of the centrifugal cylinder 5, releasing the limit on the adjacent limit pins 1201, and then the sliding shell 1101 moves upward and resets under the action of the elastic force of the four first elastic members 1102.

[0051] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes may be made to the embodiments without departing from the principles and spirit of the invention.

Claims

1. A sludge treatment equipment for a water purification plant with optimized dosing function, characterized in that: include: A chassis (1), the chassis (1) being fixedly connected to a frame (2), the frame (2) being provided with a quantitative unloading device, the frame (2) being fixedly connected to a fixing plate (3), and the fixing plate (3) being fixedly connected to a collecting shell (301); A motor (4) is fixedly connected to the frame (2); the fixing plate (3) is rotatably connected to a centrifugal cylinder (5); a side wall of the centrifugal cylinder (5) is provided with a plurality of water outlets; a lower side of the centrifugal cylinder (5) is provided with a mud outlet; and an output shaft of the motor (4) is drivingly connected to the centrifugal cylinder (5); An electric telescopic rod (6) is arranged on the frame (2); the telescopic end of the electric telescopic rod (6) is rotatably connected to a connecting frame (7); the connecting frame (7) is fixedly connected to an extrusion plate (8); the maximum diameter of the extrusion plate (8) is equal to the inner diameter of the centrifugal cylinder (5); and a first through hole is opened in the middle of the extrusion plate (8).

2. The sludge treatment equipment for water purification plant with optimized dosing function according to claim 1 is characterized in that: The connecting frame (7) is fixedly connected with a plurality of sliding pins (9), and the inner wall of the centrifugal cylinder (5) is provided with inclined sliding grooves whose number is the same as the number of the sliding pins (9), and the sliding pins (9) slide in the inclined sliding grooves on adjacent centrifugal cylinders (5).

3. The sludge treatment equipment for water purification plant with optimized dosing function according to claim 1 is characterized in that: include: There are a plurality of guide plates (10), all of which are fixedly connected to the extrusion plate (8) and are used to enhance the stirring effect of the extrusion plate (8).

4. The sludge treatment equipment for water purification plant with optimized dosing function according to claim 3 is characterized in that: The squeezing plate (8) is in the shape of an inverted truncated cone ring and is used to guide the sludge with a high water content to flow in all directions.

5. The sludge treatment equipment for water purification plant with optimized dosing function according to claim 2 is characterized in that: include: The squeezing mechanism is arranged in the centrifugal cylinder (5) and is used to squeeze and dehydrate the sludge. The squeezing mechanism comprises: a sliding shell (1101) slidably connected to the centrifugal cylinder (5); the sliding shell (1101) is composed of an inverted truncated cone shell and a circular ring; the maximum diameter of the inverted truncated cone shell of the sliding shell (1101) is equal to the inner diameter of the centrifugal cylinder (5); the sliding shell (1101) is provided with a second through hole; the second through hole of the sliding shell (1101) is connected to the mud outlet of the centrifugal cylinder (5); and a first elastic member (1102) is fixedly connected between the sliding shell (1101) and the centrifugal cylinder (5); A blocking ring (1103) is fixedly connected to the lower side of the extrusion plate (8), the blocking ring (1103) is connected to the first through hole of the extrusion plate (8), the axis of the mud outlet of the centrifugal cylinder (5), the axis of the first through hole of the extrusion plate (8), the axis of the second through hole of the sliding shell (1101) and the axis of the blocking ring (1103) coincide with each other, and the outer diameter of the blocking ring (1103) is equal to the inner diameter of the second through hole of the sliding shell (1101); The collecting cylinder (1104) is fixedly connected to the bottom plate (1).

6. The sludge treatment equipment for water purification plant with optimized dosing function according to claim 5 is characterized in that: The inverted truncated cone-shaped shell of the sliding shell (1101) is provided with a plurality of circular filtering holes, and the lower side surface of the centrifugal cylinder (5) is provided with a plurality of filtering holes.

7. The sludge treatment equipment for water purification plant with optimized dosing function according to claim 6 is characterized in that: The filter holes of the centrifugal cylinder (5) are inclined downward in a direction from close to the axis of the centrifugal cylinder (5) to away from the axis of the centrifugal cylinder (5).

8. The sludge treatment equipment for water purification plant with optimized dosing function according to claim 5 is characterized in that: The inclination angle of the generatrix of the inverted truncated cone-shaped shell on the sliding shell (1101) is smaller than the inclination angle of the generatrix of the extrusion plate (8).

9. The sludge treatment equipment for water purification plant with optimized dosing function according to claim 5, characterized in that: include: A locking assembly is arranged on the centrifugal cylinder (5) and is used to lock the position of the sliding shell (1101) according to the amount of squeezed sludge, and the locking assembly comprises: A limit pin (1201) fixedly connected to the sliding shell (1101); There are a plurality of trapezoidal blocks (1202), all of which are slidably connected to the mud outlet of the centrifugal cylinder (5); the projections of the plurality of trapezoidal blocks (1202) on a horizontal plane overlap; the limiting pins (1201) are used to squeeze the inclined surfaces of the trapezoidal blocks (1202); the trapezoidal blocks (1202) are used to limit the positions of adjacent limiting pins (1201); and a second elastic member (1203) is fixedly connected between the trapezoidal blocks (1202) and the centrifugal cylinder (5).

10. The sludge treatment equipment for water purification plant with optimized dosing function according to claim 9, characterized in that: The trapezoidal block (1202) is fixedly connected to a plurality of extrusion columns (1301); an extrusion frame (1302) is slidably connected to the mud outlet of the centrifugal cylinder (5); the extrusion frame (1302) is provided with inclined surfaces in the same number as the extrusion columns (1301); the inclined surfaces of the extrusion frame (1302) are used to extrude adjacent extrusion columns (1301).

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