Stacked screw sludge dewatering machine not easy to block

Abstract

The stacked screw sludge dewatering machine comprises a charging barrel, the upper side and the lower side of the charging barrel are provided with a feeding port and a discharging port respectively, the feeding port and the discharging port are staggered, a rotating shaft is transversely pivoted to the interior of the charging barrel, a screw rod is arranged on the rotating shaft, and a filter screen is arranged below the screw rod; wherein an exhaust port and a high-temperature steam inlet are formed in the two sides of the rotating shaft respectively, an anti-blocking mechanism is arranged between the filter screen and the screw rod, the anti-blocking mechanism comprises a partition seat, and a first extrusion hole groove serving as a front sequence and a first extrusion hole groove serving as a follow-up sequence are formed in the partition seat in an array mode. The first extrusion hole groove is formed in the partition seat, and the overall size of the first extrusion hole groove is gradually increased in the sludge conduction direction till the middle position of the partition seat is reached; and the size of the subsequent extrusion hole groove II is kept unchanged. Meanwhile, a tamping rod is arranged at the extrusion hole groove II and is arranged in the extrusion hole groove in a normal state, so that the sludge is prevented from forming a large block to block, and the tamping rod is driven by a driving block to tamp up and down in the extrusion hole groove II for cleaning so as to prevent blockage.

Description

Technical Field

[0001] The invention relates to the technical field of sludge treatment equipment, in particular to a screw stack sludge dewatering machine which is not prone to clogging. Background Art

[0002] In environmental protection construction, it is often necessary to treat the sludge after sewage treatment. Direct discharge of untreated sludge is likely to cause ecological pollution and affect people's production activities. The existing technology usually uses sludge dehydration to dry the sludge. During the sludge treatment process, the sludge is squeezed toward the discharge port under the action of the spiral rod. The sludge will cause blockage of the filter plate when passing through the filter plate, especially during the dehydration process, the sludge is continuously dehydrated and dried during the conduction process of the spiral rod. The sludge is drier as it goes further, and different blockage forms appear in different areas, so the conventional filter efficiency is low.

[0003] This case was created to solve the above problems. Summary of the invention

[0004] 1. Technical issues to be solved

[0005] In view of the shortcomings of the prior art, the present invention provides a screw stack sludge dewatering machine that is not prone to clogging, which solves the problems raised in the above-mentioned background technology.

[0006] (II) Technical solution

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: a non-clogging spiral stack sludge dewatering machine, comprising a barrel, wherein the upper and lower sides of the barrel are respectively provided with a feed port and a discharge port and the two are staggered, a rotating shaft is laterally pivoted in the barrel and a spiral rod is provided on the rotating shaft, a filter screen is provided below the spiral rod, wherein an exhaust port and a high-temperature steam inlet are respectively provided on both sides of the rotating shaft, an anti-blocking mechanism is provided between the filter screen and the spiral rod, the anti-blocking mechanism comprises a partition seat, an array of extrusion hole slot 1 as a preceding extrusion hole slot 1 and a subsequent extrusion hole slot 1 are arranged on the partition seat, the extrusion hole slot 1 and the extrusion hole slot 1 are both in the shape of a cone with a small upper part and a large lower part, wherein a pounding component is provided at the extrusion hole slot 2, and the sludge in the extrusion hole slot 2 is cleaned by pounding up and down.

[0008] As a preferred solution, further, the overall size of the preceding extrusion hole groove 1 is gradually expanded along the sludge conduction direction until it reaches the middle position of the partition seat, and the size of the subsequent extrusion hole groove 2 is set to remain unchanged.

[0009] As a preferred solution, further, the upper section of the extrusion hole groove 1 is divided into two parts connected to each other, the upper part is in the shape of a lower cone, and the lower part is in the shape of an outwardly expanding arc and a cone groove that gradually expands in size as it goes down to the lower side.

[0010] As a preferred embodiment, further, the tamping assembly includes a tamping rod disposed at two locations of the extrusion hole groove, the tamping rod is normally placed in the extrusion hole groove, and the lower side of the tamping rod is connected to a driving block capable of vertical lifting.

[0011] As a preferred solution, further, the partition seat adopts a cross-cutting mechanism at one of the extrusion holes, and links the pounding assembly at the second extrusion hole to prevent the partition seat from being blocked. A penetrating cylinder is arranged in the middle of the filter screen, and a support rod is connected to one side of the cylinder output end, and the upper end of the support rod is connected to the driving block, and a vertically mounted tooth plate is connected to the other side of the cylinder output end, and one side of the tooth plate is meshed with a gear pivotally connected to the inner wall of the barrel.

[0012] As a preferred embodiment, further, the cross-cutting mechanism includes an inverted U-shaped guide seat, in which a cutting plate is slidably connected, a conical extrusion hole groove 1 is provided on the cutting plate, a through hole with the same size as the top of the extrusion hole groove 1 is provided on the guide seat, and under normal conditions, the through hole corresponds to the extrusion hole groove 1 axially one by one, a tooth plate 2 is connected to the bottom of the cutting plate, and a gear 2 pivotally connected to the inner wall of the barrel is meshed on its lower side, wherein gear 1 and gear 2 are respectively coaxially connected to pulleys, and the two pulleys are linked by a belt.

[0013] As a preferred solution, further, a liquid drain seat is provided below the filter screen, the liquid drain seat is high in the middle and low on both sides, and liquid drain grooves are provided in the low-lying areas on both sides of the liquid drain seat.

[0014] (III) Beneficial effects

[0015] After adopting the above technical solution, the present invention provides a non-blocking screw stack sludge dewatering machine, which has the following beneficial effects compared with the prior art:

[0016] 1. The filter hole on the partition is set as the previous extrusion slot 1, and its overall size gradually expands along the sludge conduction direction until it is set as the subsequent extrusion slot 2 in the middle of the partition, and its size remains unchanged. At the same time, the sludge falling into the subsequent extrusion slot 2 is relatively dry and not easy to fall. Therefore, a tamping rod is provided at the extrusion slot 2. The tamping rod is normally placed in the extrusion slot to prevent the sludge from forming large blocks and clogging. The driving block drives the tamping rod to tamp up and down in the extrusion slot 2 to achieve interval cleaning to prevent clogging.

[0017] 2. The partition seat is located at the extrusion hole groove and is provided with a cross-cutting mechanism linked with the tamping rod. When the cutting plate is driven horizontally to move, the silt can be quickly cut off, which is more effective in preventing it from being blocked. The thickness of the through hole needs to be set thinner, which is more conducive to the silt falling off. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a cross-sectional front view of an embodiment of the present invention;

[0019] Figure 2 It is a cross-sectional front view of the partition seat of the present invention;

[0020] Figure 3 For the present invention Figure 2 A is an enlarged schematic diagram of the local structure at center A;

[0021] Figure 4 It is a cross-sectional front view schematic diagram of the second embodiment of the present invention;

[0022] Figure 5 For the present invention Figure 4 A magnified schematic diagram of the local structure at B in the middle;

[0023] Figure 6 This is a disassembly diagram of the cross-cutting mechanism in the second embodiment of the present invention.

[0024] In the figure, 1, barrel; 2, feed port; 3, discharge port; 4, rotating shaft; 5, screw rod; 6, high-temperature steam inlet; 7, partition seat; 8, extrusion hole slot 1; 9, extrusion hole slot 2; 10, filter screen; 11, drain seat; 12, drive block; 13, tamping rod; 14, cylinder; 15, support rod; 16, tooth plate 1; 17, gear 1; 18, belt; 19, tooth plate 2; 20, guide seat; 21, cutting plate; 22, through hole; 23, pulley; 24, gear 2. DETAILED DESCRIPTION

[0025] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0026] Embodiment 1, see attached Figure 1 As shown, a screw stack sludge dewatering machine that is not easy to be clogged includes a barrel 1, and a feed port 2 and a discharge port 3 are respectively opened on the upper and lower sides of the barrel 1, and the two are staggered. A rotating shaft 4 is pivoted horizontally in the barrel 1 and a screw rod 5 is provided on the rotating shaft 4, wherein the left end of the rotating shaft 4 cooperates with a bearing seat arranged on the outside and an exhaust port is opened through it, and the right end is connected to a high-temperature steam inlet 6.

[0027] A filter screen 10 is provided below the spiral rod 5, and the filter screen 10 extends horizontally to the discharge port 3. A liquid drain seat 11 is provided below the filter screen 10, and the liquid drain seat 11 is high in the middle and low on both sides, and liquid drain grooves are provided in the low-lying areas on both sides.

[0028] See attached Figure 2As shown, an anti-blocking mechanism is provided between the filter screen 10 and the spiral rod 5, which is used for preliminary screening of sludge to prevent the sludge from quickly blocking the filter screen 10. The anti-blocking mechanism includes a spacer 7, on which an array of extrusion holes are arranged, and the size of the extrusion holes is small at the top and large at the bottom. Since the sludge gradually dries after contacting the spiral rod 5 during the conduction process, there is a difference in the blockage situation compared to the wet sludge state, so the overall size of the extrusion hole 8 in the previous sequence is gradually expanded along the sludge conduction direction until it is in the middle position of the spacer 7, and the size of the subsequent extrusion hole 2 9 is set to remain unchanged.

[0029] Secondly, the upper section shape of the extruded hole-8 shape is improved to a certain extent. Figure 3 As shown, the upper section of the extrusion hole groove 8 is divided into two parts connected to each other. The upper part is in the shape of a lower cone, which can receive the silt and sink better. The lower part is in the shape of an outward-expanding arc, which can better accommodate the silt and flow down to the gradually expanding conical groove on the lower side. The silt continuously conducted from the upper side exerts a certain downward pressure on the silt in the extrusion hole groove 8. At the same time, the moist silt can also sink more easily in the extrusion hole groove 8 to avoid easy clogging.

[0030] The sludge that falls into the subsequent extrusion hole groove 29 is relatively dry and not easy to fall. Therefore, a tamping rod 13 is provided at the extrusion hole groove 29 (the size of the extrusion hole groove 29 is relatively larger, and it is best to provide a guide rod at each extrusion hole groove 29). The tamping rod 13 is normally placed in the extrusion hole groove to prevent the sludge from forming large lumps and clogging. A driving block 12 that can be vertically lifted is connected to the lower side of the tamping rod 13 (the driving block 12 needs to be hollowed out and can be driven by a cylinder 14 or an electric push rod), which can drive the tamping rod 13 to tamp up and down in the extrusion hole groove 29 to achieve interval cleaning to prevent blockage.

[0031] Embodiment 2, see attached Figure 4-6 As shown, the improvement is mainly made for the extrusion slot 1 8 in the first embodiment, an active cross-cutting mechanism is used for anti-blocking, and the tamping rod 13 at the extrusion slot 2 9 is linked to realize the anti-blocking operation of the partition seat 7. A through groove is required to be set in the middle of the filter screen 10 for the cylinder 14 (or electric push rod) on the lower side to rise and fall, and a support rod 15 is connected to one side of the output end of the cylinder 14, and the upper end of the support rod 15 is connected to the driving block 12 and drives it to directly move in the vertical direction.

[0032] The other side of the output end of the cylinder 14 is connected to a vertically arranged toothed plate 16, one side of which is meshed with a gear 17 pivotally connected to the inner wall of the barrel 1. The cross-cutting mechanism includes an inverted U-shaped guide seat 20, in which a cutting plate 21 is slidably connected, and a cone-shaped extrusion hole slot 18 is opened on the cutting plate 21. At the same time, a through hole 22 with the same size as the top of the extrusion hole slot 8 is opened on the guide seat 20, and they correspond to each other axially under normal conditions. The bottom of the cutting plate 21 is connected to a toothed plate 29, and the lower side of the cutting plate 29 is meshed with a gear 24 pivotally connected to the inner wall of the barrel 1, wherein the gear 17 and the gear 24 are coaxially connected to pulleys 23 respectively, and the two pulleys 23 are linked by a belt 18, so that the cutting plate 21 can be driven to operate synchronously with the tamping rod 13 during the output process of the cylinder 14.

[0033] It should be noted that when the cutting plate 21 is driven to move horizontally, the sludge can be quickly cut off, which is more effective in preventing the sludge from being blocked. Moreover, the thickness of the through hole 22 needs to be set thinner, which is more conducive to the sludge falling off.

[0034] The specific embodiments described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A non-clogging spiral sludge dewatering machine, comprising a barrel, wherein the upper and lower sides of the barrel are respectively provided with a feed inlet and a discharge inlet, and the two are staggered, a rotating shaft is laterally pivoted in the barrel, a spiral rod is provided on the rotating shaft, a filter screen is provided below the spiral rod, and an exhaust port and a high-temperature steam inlet are respectively provided on both sides of the rotating shaft, characterized in that: An anti-blocking mechanism is provided between the filter screen and the spiral rod, and the anti-blocking mechanism includes a spacer, on which an array of a preceding extrusion hole slot 1 and a subsequent extrusion hole slot 1 are arranged, and the extrusion hole slot 1 and the extrusion hole slot 1 are both in a cone shape with a small top and a large bottom, wherein a pounding component is provided at the extrusion hole slot 2, and the sludge in the extrusion hole slot 2 is cleaned by pounding up and down.

2. According to claim 1, a non-clogging screw press sludge dewatering machine, characterized in that: The overall size of the aforementioned extrusion hole groove 1 gradually expands along the sludge conduction direction until it reaches the middle position of the partition seat, and the size of the subsequent extrusion hole groove 2 is set to remain unchanged.

3. According to claim 2, a non-clogging screw press sludge dewatering machine, characterized in that: The upper section of the extrusion hole groove 1 is divided into two parts connected to each other, the upper part is in the shape of a lower cone, and the lower part is in the shape of an outwardly expanding arc and gradually expanding to the lower side of the cone groove.

4. According to claim 1, a non-clogging screw press sludge dewatering machine, characterized in that: The tamping assembly comprises a tamping rod arranged at two positions of the extrusion hole groove, the tamping rod is normally placed in the extrusion hole groove, and the lower side of the tamping rod is connected with a driving block capable of vertical lifting.

5. The non-clogging screw press sludge dewatering machine according to claim 4, characterized in that: The partition seat adopts a cross-cutting mechanism at one extrusion hole groove, and links the pounding assembly at the second extrusion hole groove to prevent the partition seat from being blocked. A penetrating cylinder is arranged in the middle of the filter screen, and a support rod is connected to one side of the cylinder output end, and the upper end of the support rod is connected to the driving block. The other side of the cylinder output end is connected to a vertically arranged tooth plate, and one side of the tooth plate is meshed with a gear pivotally connected to the inner wall of the barrel.

6. The non-clogging screw press sludge dewatering machine according to claim 5, characterized in that: The cross-cutting mechanism includes an inverted U-shaped guide seat, in which a cutting plate is slidably connected, and a conical extrusion hole groove 1 is opened on the cutting plate. A through hole with the same size as the top of the extrusion hole groove 1 is opened on the guide seat, and it corresponds to the extrusion hole groove 1 axially under normal conditions. A tooth plate 2 is connected to the bottom of the cutting plate, and a gear 2 pivotally connected to the inner wall of the barrel is meshed on its lower side, wherein gear 1 and gear 2 are respectively coaxially connected to pulleys, and the two pulleys are linked by a belt.

7. The non-clogging screw press sludge dewatering machine according to claim 1, characterized in that: A liquid drain seat is arranged below the filter screen, the liquid drain seat is high in the middle and low on both sides, and liquid drain grooves are arranged in the low-lying areas on both sides of the liquid drain seat.

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