Sludge dewatering pretreatment device

Abstract

The invention provides a sludge dewatering pretreatment device which comprises a sludge dewatering machine, a hopper is fixedly installed on the sludge dewatering machine, at least two inclined sieve plates are installed on the hopper in a sliding mode, an arc-shaped sieve plate is fixedly installed on the inner wall of the hopper, and the arc-shaped sieve plate is located below the middle portions of the two inclined sieve plates. Through the arrangement of the inclined sieve plate and the arc-shaped sieve plate structure, sludge can be conveyed into the hopper during use, the sludge is filtered by the inclined sieve plate and then enters the sludge dewatering machine, and broken stones in the sludge are blocked and filtered by the inclined sieve plate and then slide into the arc-shaped sieve plate along the inclined sieve plate.

Description

Technical Field

[0001] The invention relates to the technical field of sludge dewatering equipment, in particular to a sludge dewatering pre-treatment device. Background Art

[0002] Sludge dehydration refers to the process of removing most of the water content from sludge through filtration or evaporation. There are two methods of sludge dehydration: natural evaporation and mechanical dehydration. The commonly used sludge drying equipment is a single-channel rotary dryer, which is suitable for urban sludge drying.

[0003] In the prior art, untreated river sludge is often mixed with gravel and hard objects. If these gravels follow the sludge into the sludge dewatering machine, it is easy to cause wear and even damage inside the sludge dewatering machine. Therefore, a sludge dewatering pre-treatment device is needed to meet people's needs. Summary of the invention

[0004] The object of the present invention is to provide a sludge dewatering pre-treatment device, which can prevent crushed stones from entering the sludge dewatering machine and causing damage to the sludge dewatering machine.

[0005] According to one purpose of the present invention, the present invention provides a sludge dewatering pre-treatment device, including a sludge dewatering machine, on which a hopper is fixedly installed, on which at least two inclined screen plates are slidably installed, and an arc-shaped sieve plate is fixedly installed on the inner wall of the hopper, and the arc-shaped sieve plate is located below the middle part of the two inclined screen plates.

[0006] Furthermore, a material distribution pipe is fixedly installed on one side of the hopper, a connecting shaft is rotatably connected inside the material distribution pipe, the other end of the connecting shaft is rotatably installed on the hopper, and a spiral blade is fixedly installed on the connecting shaft.

[0007] Furthermore, a motor is fixedly mounted on the material distribution pipe, a second pulley is fixedly mounted on the output end of the motor, a belt is transmission-mounted on the second pulley, a first pulley is transmission-mounted on the belt, and the first pulley is fixedly mounted on one end of the connecting shaft.

[0008] Furthermore, the first pulley and the second pulley are both provided with positioning grooves, and the belt transmission is installed in the two positioning grooves.

[0009] Furthermore, a plurality of scrapers are fixedly mounted on the inner wall of the hopper, and at least two of the scrapers located on the same side are in contact with the two inclined screen plates respectively.

[0010] Furthermore, a recovery box is fixedly installed on one side of the hopper, and the recovery box is located on the bottom side of the material distribution pipe.

[0011] Furthermore, the hopper and the material distribution pipe are both provided with a rotating shaft hole, and the two ends of the connecting shaft are rotatably installed in the two rotating shaft holes respectively.

[0012] Furthermore, at least two linkage rods are fixedly mounted on one side of the two inclined screen plates, at least two guide rods are slidably mounted on at least four linkage rods, and a baffle is fixedly mounted on one end of the guide rod.

[0013] Furthermore, a spring is slidably sleeved on the guide rod, and two ends of the spring are respectively fixedly mounted on a side where the linkage rod and the baffle are close to each other.

[0014] Furthermore, at least two sliding holes are formed on the linkage rod, and at least two guide rods are slidably installed in the two sliding holes respectively.

[0015] The technical solution of the present invention can transport sludge into a hopper through the setting of an inclined screen plate and an arc-shaped screen plate structure. The sludge will enter the sludge dewatering machine after being filtered by the inclined screen plate, while the gravel in the sludge will be blocked and filtered by the inclined screen plate, and then slide along the inclined screen plate into the arc-shaped screen plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a structural schematic diagram of an embodiment of the present invention;

[0018] Figure 2 It is a schematic diagram of a local structure of an embodiment of the present invention;

[0019] Figure 3 It is a structural schematic diagram of a turntable according to an embodiment of the present invention;

[0020] Figure 4 This is a schematic structural diagram of the inclined screen plate portion of an embodiment of the present invention;

[0021] Figure 5 It is a structural schematic diagram of the turntable part of an embodiment of the present invention;

[0022] Figure 6 Schematic diagram of the cross-sectional structure of the arc-shaped sieve plate part of an embodiment of the present invention;

[0023] Figure 7 It is a schematic cross-sectional structure diagram of the material distribution pipe part of an embodiment of the present invention;

[0024] Figure 8 It is a structural schematic diagram of the linkage rod part of an embodiment of the present invention;

[0025] Fig. 9 This is a schematic diagram of the structure of the material distribution pipe part of an embodiment of the present invention;

[0026] Fig.10 It is a schematic structural diagram of the connecting hole part of an embodiment of the present invention.

[0027] In the figure: 100, sludge dewatering machine; 101, hopper; 200, inclined screen plate; 201, arc screen plate; 202, distribution pipe; 203, connecting shaft; 204, spiral sheet; 205, motor; 206, belt; 207, first pulley; 208, recovery box; 209, positioning groove; 210, drop opening; 211, shaft hole; 212, connecting hole; 213, guide slide groove; 214, second pulley; 300, turntable; 301, extrusion oblique block; 302, guide rod; 303, baffle; 304, linkage rod; 305, spring; 306, sliding hole; 400, support rod; 401, scraper. DETAILED DESCRIPTION

[0028] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0030] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "multiple" means two or more, unless otherwise clearly and specifically defined. In addition, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] Example 1

[0032] like Figure 1-Figure 10 As shown:

[0033] A sludge dewatering pre-treatment device includes a sludge dewatering machine 100, on which a hopper 101 is fixedly mounted, on which two inclined screen plates 200 are slidably mounted, and on the inner wall of the hopper 101 an arc-shaped screen plate 201 is fixedly mounted, and the two inclined screen plates 200 are both in contact with the arc-shaped screen plate 201.

[0034] like Figure 6 As shown, a distribution pipe 202 is fixedly installed on one side of the hopper 101, one end of a connecting shaft 203 is rotatably installed on the inner wall of the distribution pipe 202, the other end of the connecting shaft 203 is rotatably installed on the hopper 101, a spiral sheet 204 is fixedly installed on the connecting shaft 203, a motor 205 is fixedly installed on the distribution pipe 202, a second pulley 214 is fixedly installed on the output end of the motor 205, a belt 206 is installed on the second pulley 214 for transmission, a first pulley 207 is installed on the belt 206 for transmission, the first pulley 207 is fixedly installed on one end of the connecting shaft 203, and a turntable 300 is fixedly installed on one end of the connecting shaft 203.

[0035] like Figure 3 and Figure 5 As shown, a plurality of extrusion inclined blocks 301 are fixedly mounted on one side of the turntable 300 .

[0036] like Figure 8 As shown, two linkage rods 304 are fixedly installed on one side of the two inclined screen plates 200, two guide rods 302 are slidably installed on the four linkage rods 304, baffles 303 are fixedly installed on one end of the eight guide rods 302, and the other ends of the eight guide rods 302 are fixedly installed on one side of the hopper 101.

[0037] like Figure 4As shown, two support rods 400 are fixedly installed on the inner wall of the hopper 101, and a plurality of scrapers 401 are fixedly installed on the inner wall of the hopper 101. The two scrapers 401 located on the same side are respectively fixedly installed on one side of the two support rods 400. The two scrapers 401 located on the same side are respectively in contact with two inclined screen plates 200. The inclined screen plates 200 will contact with the scrapers 401 during the movement. The scrapers 401 can scrape off the sludge accumulated on the inclined screen plates 200 to prevent the inclined screen plates 200 from being blocked.

[0038] like Figure 6 As shown, positioning grooves 209 are provided on the first pulley 207 and the second pulley 214 , and the belt 206 is installed in the two positioning grooves 209 . The positioning grooves 209 can prevent the belt 206 from being offset.

[0039] like Figure 4 As shown, a recovery box 208 is fixedly installed on one side of the hopper 101, and the recovery box 208 is located at the bottom side of the material distribution pipe 202. The recovery box 208 is provided to facilitate centralized cleaning of gravel.

[0040] like Fig.10 As shown, both the hopper 101 and the distribution pipe 202 are provided with a shaft hole 211, and the two ends of the connecting shaft 203 are rotatably installed in the two shaft holes 211 respectively. The continuously rotating first pulley 207 will drive the connecting shaft 203 to rotate in the two shaft holes 211 to prevent the connecting shaft 203 from being offset.

[0041] A connecting hole 212 is provided on the hopper 101 , and the connecting hole 212 is connected to the distribution pipe 202 . The spiral blade 204 is movably installed in the connecting hole 212 . During the rotation of the spiral blade 204 , the crushed stones in the arc screen plate 201 can be transported to the distribution pipe 202 through the connecting hole 212 .

[0042] Four guide slots 213 are provided on the hopper 101 , and the two ends of the two inclined screen plates 200 are slidably installed in the four guide slots 213 , respectively. When the inclined screen plates 200 slide, they will slide in the guide slots 213 , thereby limiting the sliding direction of the inclined screen plates 200 .

[0043] like Figure 8 As shown, a spring 305 is slidably sleeved on the guide rod 302, and both ends of the spring 305 are fixedly mounted on the side where the linkage rod 304 and the baffle 303 are close to each other. The moving linkage rod 304 will squeeze the two springs 305. When the continuously moving extrusion inclined block 301 moves away from the inclined screen plate 200, the spring 305 in the compressed state will reset and push the inclined screen plate 200 to move and reset.

[0044] The linkage rod 304 is provided with two sliding holes 306 , and the two guide rods 302 are slidably installed in the two sliding holes 306 respectively. The linkage rod 304 slides on the two guide rods 302 through the two sliding holes 306 , thereby limiting the moving direction of the linkage rod 304 .

[0045] like Fig. 9 As shown, a material drop opening 210 is provided on the material distribution pipe 202 , and the material drop opening 210 corresponds to the recovery box 208 . The continuously pushed crushed stones will heat the material distribution pipe 202 and fall into the recovery box 208 through the material drop opening 210 .

[0046] When the present invention works:

[0047] The sludge is poured into the hopper 101, and the sludge will fall into the sludge dewatering machine 100 through the inclined screen plate 200, while the gravel in the sludge will roll along the inclined screen plate 200 and fall into the arc-shaped screen plate 201. During the process, the motor 205 can be turned on, and the output end of the motor 205 will drive the second pulley 214 to rotate. The rotating second pulley 214 will drive the first pulley 207 to rotate by cooperating with the belt 206. The positioning groove 209 can prevent the belt 206 from deviating, and the continuously rotating first pulley 207 will drive the The movable connecting shaft 203 rotates in the two rotating shaft holes 211 to prevent the connecting shaft 203 from being offset. The continuously rotating connecting shaft 203 will drive the spiral blade 204 to rotate. During the rotation of the spiral blade 204, the gravel in the arc screen plate 201 will be pushed, and the excess sludge in the arc screen plate 201 will fall into the sludge dewatering machine 100 through the arc screen plate 201. The continuously pushed gravel will heat the distribution pipe 202 and fall into the recovery box 208 through the drop port 210. The recovery box 208 is set to facilitate the centralized cleaning of the gravel.

[0048] The rotating disk 300 is driven to rotate under the continuous rotation of the connecting shaft 203, and the rotating rotating disk 300 drives the extrusion inclined block 301 to move. The extrusion inclined block 301 will reciprocate and squeeze the two inclined screen plates 200 during the movement. When the extrusion inclined block 301 squeezes the inclined screen plates 200, it will push the two inclined screen plates 200 to move. When the inclined screen plates 200 move, they will push the linkage rod 304 to move. The linkage rod 304 will slide on the two guide rods 302 through the two sliding holes 306, thereby limiting the moving direction of the linkage rod 304. The continuously moving linkage rod 304 will squeeze the two springs 305. When the continuously moving extrusion inclined block 301 moves away from the inclined screen plates 200, the spring 305 in a compressed state will reset and push the inclined screen plates 200 to move and reset, so that the inclined screen plates 200 can be driven to vibrate back and forth under the action of the reciprocating movement of the extrusion inclined block 301, thereby improving the screening effect. In addition, the inclined screen plate 200 will contact the scraper 401 during the movement, and the scraper 401 can scrape off the sludge accumulated on the inclined screen plate 200 to prevent the inclined screen plate 200 from being blocked.

[0049] The present invention arranges structures such as inclined screen plates and arc-shaped screen plates. When in use, the sludge can be conveyed into a hopper. The sludge will enter the sludge dewatering machine after being filtered by the inclined screen plates, while the gravel in the sludge will be blocked and filtered by the inclined screen plates, and then slide along the inclined screen plates into the arc-shaped screen plates. During the process, the motor can be turned on to convey the gravel in the arc-shaped screen plates, and finally the gravel will fall into a recovery box for centralized cleaning. During the process, the sludge in the arc-shaped screen plates will fall into the sludge dewatering machine through the arc-shaped screen plates.

[0050] The present invention arranges an extrusion inclined block so that the turntable can rotate when the motor is turned on. During the rotation of the turntable, the extrusion inclined block will drive the extrusion inclined block to repeatedly squeeze the inclined screen plate. Through the cooperation with the spring, the inclined screen plate can vibrate back and forth to improve the screening effect. In the process of movement, the inclined screen plate will rub against the scraper to prevent sludge accumulation and blockage on the inclined screen plate.

[0051] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A sludge dewatering pre-treatment device, characterized in that: It comprises a sludge dewatering machine, which is characterized in that a hopper is fixedly mounted on the sludge dewatering machine, at least two inclined screen plates are slidably mounted on the hopper, an arc-shaped screen plate is fixedly mounted on the inner wall of the hopper, and the arc-shaped screen plate is located below the middle of the two inclined screen plates.

2. The sludge dewatering pretreatment device according to claim 1 is characterized in that: A material distribution pipe is fixedly installed on one side of the hopper, a connecting shaft is rotatably connected in the material distribution pipe, the other end of the connecting shaft is rotatably installed on the hopper, and a spiral piece is fixedly installed on the connecting shaft.

3. The sludge dewatering pretreatment device according to claim 2 is characterized in that: A motor is fixedly mounted on the material distribution pipe, a second pulley is fixedly mounted on the output end of the motor, a belt is installed on the second pulley for transmission, a first pulley is installed on the belt for transmission, and the first pulley is fixedly mounted on one end of the connecting shaft.

4. The sludge dewatering pretreatment device according to claim 3 is characterized in that: The first belt pulley and the second belt pulley are both provided with positioning grooves, and the belt transmission is installed in the two positioning grooves.

5. The sludge dewatering pretreatment device according to claim 1 is characterized in that: A plurality of scrapers are fixedly mounted on the inner wall of the hopper, and at least two of the scrapers located on the same side are in contact with the two inclined screen plates respectively.

6. The sludge dewatering pretreatment device according to claim 2, characterized in that: A recovery box is fixedly installed on one side of the hopper, and the recovery box is located on the bottom side of the material distribution pipe.

7. The sludge dewatering pretreatment device according to claim 2, characterized in that: The hopper and the material distribution pipe are both provided with rotating shaft holes, and the two ends of the connecting shaft are rotatably installed in the two rotating shaft holes respectively.

8. The sludge dewatering pretreatment device according to claim 1, characterized in that: At least two linkage rods are fixedly mounted on one side of the two inclined screen plates, at least two guide rods are slidably mounted on at least four linkage rods, and a baffle is fixedly mounted on one end of the guide rod.

9. The sludge dewatering pretreatment device according to claim 8, characterized in that: A spring is slidably sleeved on the guide rod, and two ends of the spring are respectively fixedly mounted on the side where the linkage rod and the baffle plate are close to each other.

10. The sludge dewatering pretreatment device according to claim 9, characterized in that: At least two sliding holes are provided on the linkage rod, and at least two guide rods are slidably installed in the two sliding holes respectively.

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