Disc type pressure filtering device

Abstract

The utility model discloses a disc type pressure filtering device which is characterized by comprising a support and a filtering mechanism, the filtering mechanism comprises an extrusion cylinder fixedly installed on the support, two conveying belts penetrate through the extrusion cylinder, the top end of the extrusion cylinder is connected with a plurality of pipelines, spraying pipes are arranged at the tail ends of the pipelines, and the spraying pipes are communicated with the extrusion cylinder. An electric ball valve is further arranged on the pipeline, and the electric ball valve and the conveying belt are controlled through a control module. A rotating ring is rotationally connected into the extrusion cylinder, limiting plates are slidably mounted on the two sides of the bottom of the inner wall of the extrusion cylinder, and a support is arranged on the lower portion of the outer side of the extrusion cylinder and slidably connected with the side end of the conveying belt; through cooperation of the pipeline and the electric ball valve, the water hammer effect generated after the valve is closed pushes the squeezing plate to squeeze and filter a matrix mixture, and a water hammer is generated through the continuous switch, so that a filter cake generated after the matrix mixture is squeezed has a certain springback allowance, more filtrate passes through the filter cake, and the dryness of the filter cake is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of agricultural material pressing and filtering, and particularly relates to a disc type pressurized filtering device. Background Art

[0002] After some crops are collected, the remaining straw can often be recycled to make agricultural and sideline products, such as livestock feed and organic fertilizer. When making organic fertilizer, it needs to be fermented for long-term preservation. During fermentation, the water content of the straw needs to be controlled to prevent the recycled crops such as straw from rotting during fermentation.

[0003] In the prior art, for example, the Chinese invention patent with the publication number of CN105666926B discloses "a plant residue pressing and dewatering device", which realizes the integration of feeding and discharging while ensuring sufficient drying by squeezing materials multiple times inside a disc structure. However, this structure has defects. That is, when facing crops with more fibers, this mechanism is prone to being blocked by fibers in the filter screen, and it is not very convenient to clean the filter screen. At the same time, the extrusion force of this mechanism is constant, which leads to the fact that the filter cake formed after the materials are compacted during extrusion will block part of the filtrate squeezed out from passing through the filter screen, thereby increasing the water content of the plant residue. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a device that can facilitate the cleaning of the filter screen, ensure the filtration efficiency, and adopt pulse extrusion, so that the filtrate passes through the filter cake formed by the matrix mixture filter residue, thereby reducing the water content of the matrix filter residue.

[0005] In order to achieve the above technical effects, the utility model is realized through the following technical solutions: a disc type pressurized filtering device, characterized in that it includes a bracket and a filtering mechanism. The filtering mechanism includes an extrusion cylinder fixedly installed on the bracket. The extrusion cylinder is penetrated by two conveyor belts. Multiple pipes are connected to the top of the extrusion cylinder. A spray pipe is arranged at the end of the pipe, and an electric ball valve is also arranged on the pipe. The electric ball valve and the conveyor belt are controlled by a control module. A rotating ring is rotatably connected inside the extrusion cylinder. Two limiting plates are slidably installed on both sides of the bottom of the inner wall of the extrusion cylinder. A support is arranged at the lower part of the outside of the extrusion cylinder. The support is slidably connected to the side end of the conveyor belt.

[0006] Preferably, the extrusion cylinder includes liquid inlet holes symmetrically opened on both sides of the top, liquid outlet holes symmetrically opened on both sides of the upper part of the extrusion cylinder, and the diameter of the liquid inlet holes is larger than that of the liquid outlet holes. A rotating shaft is arranged in the middle of the extrusion cylinder, a partition plate is arranged in the upper part of the extrusion cylinder, sliding grooves are penetrated through both sides of the extrusion cylinder, and a first filter screen is arranged at the bottom of the extrusion cylinder. Limiting plates with opposite directions are arranged on both sides of the first filter screen.

[0007] Preferably, the rotating ring is rotatably mounted on the rotating shaft, and the rotating ring is slidably connected to the bottom of the partition plate. Extrusion plates are arranged in a mirror image on both sides of the upper part of the rotating ring. The extrusion plates are in fit with the inner wall of the extrusion cylinder. An inclined extrusion block is arranged at the bottom of the extrusion plate. A fixing plate is arranged at the lower part of the rotating ring. Clamping blocks adapted to the buckles are respectively and slidably mounted on both sides of the bottom of the fixing plate. A first spring is clamped between the clamping block and the fixing plate.

[0008] Preferably, the limiting plate is of an arc-shaped structure, and the inner diameter of the limiting plate is the same as the inner diameter of the extrusion cylinder. The cross-section of the limiting plate is a wedge-shaped structure. A plurality of buckles are equidistantly arranged on the inner wall of the limiting plate. Second springs are fixedly mounted on both sides of the limiting plate.

[0009] Preferably, a lever is hinged on the support. A ratchet pawl is arranged at the upper end of the lever. Connecting rods are hinged on both sides of the lever. One side of the connecting rod is hinged with a push rod. The push rod is slidably mounted inside the extrusion cylinder, and a wedge-shaped block is arranged at the end of the push rod. The wedge-shaped block is slidably connected to the limiting plate.

[0010] Preferably, a plurality of conical conveying grooves are arranged on the conveyor belt. The conveying grooves are in fit with the extrusion plates. A second filter screen is hinged on one side below the conveying groove. The bottom of the conveying groove penetrates through the conveyor belt. A plurality of scraping plates are arranged outside the conveyor belt.

[0011] Compared with the related art, a disc-type pressure filtration device provided by the present utility model has the following beneficial effects:

[0012] 1. By setting a filtering mechanism and cooperating with an electric ball valve through a pipeline, the water hammer effect generated after the valve is closed is used to push the extrusion plate to press and filter the matrix mixture, and water hammer is generated by continuously switching the valve, so that the filter cake generated after pressing the matrix has a certain amount of rebound margin, thereby enabling more filtrate to pass through, and further increasing the dryness of the filter cake;

[0013] 2. By setting a conveyor belt and a spray pipe, the revolving characteristic of the conveyor belt is utilized, so that the matrix residue can automatically fall off after pressing is completed, and the spray pipe cleans the filter screen to prevent plant fibers from blocking the filter screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for describing the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present utility model, and those of ordinary skill in the art can also obtain other drawings according to these drawings without creative efforts.

[0015] Figure 1 It is a schematic diagram of the overall structure of the present utility model;

[0016] Figure 2 This is a cross-sectional view of the practical filtering mechanism of the present utility model;

[0017] Figure 3 This is a schematic diagram of the rotating ring structure of the present utility model;

[0018] Figure 4 This is a schematic diagram of the limiting plate structure of the present utility model;

[0019] Figure 5 This is a schematic diagram of the support structure of the present utility model;

[0020] Figure 6 This is a cross-sectional view of the conveying trough of the present utility model.

[0021] In the attached drawings, the list of components represented by each reference numeral is as follows:

[0022] 1. Support; 2. Filtering mechanism; 21. Extrusion cylinder; 211. Liquid inlet hole; 212. Liquid outlet hole; 213. Rotating shaft; 214. Partition board; 215. Slide groove; 216. First filter screen; 22. Pipeline; 23. Electric ball valve; 24. Rotating ring; 241. Extrusion plate; 242. Extrusion block; 243. Fixed plate; 244. First spring; 245. Clamping block; 25. Limiting plate; 251. Buckle; 252. Second spring; 26. Support; 261. Lever; 262. Pawl; 263. Connecting rod; 264. Push rod; 265. Wedge block; 3. Conveyor belt; 31. Conveying trough; 32. Second filter screen; 33. Scraper; 4. Spraying pipe; 5. Control module. Specific embodiments

[0023] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0024] Embodiment 1

[0025] Refer to Figures 1 to 6As shown in the figure, a disc-type pressure filtration device is characterized by comprising a bracket 1 and a filtration mechanism 2. The filtration mechanism 2 includes an extrusion cylinder 21 fixedly installed on the bracket 1. The extrusion cylinder 21 is penetrated by two conveyor belts 3. A plurality of pipes 22 are connected to the top end of the extrusion cylinder 21. A spray pipe 4 is arranged at the end of the pipe 22, and an electric ball valve 23 is also arranged on the pipe 22. The electric ball valve 23 and the conveyor belt 3 are controlled by a control module 5. A rotating ring 24 is rotatably connected inside the extrusion cylinder 21. Two limit plates 25 are slidably installed on both sides of the bottom of the inner wall of the extrusion cylinder 21. A support 26 is arranged at the lower part of the outer side of the extrusion cylinder 21, and the support 26 is slidably connected to the side end of the conveyor belt 3.

[0026] The extrusion cylinder 21 includes liquid inlet holes 211 symmetrically opened on both sides of the top, liquid outlet holes 212 symmetrically opened on both sides of the upper part of the extrusion cylinder 21. The diameter of the liquid inlet holes 211 is larger than that of the liquid outlet holes 212. A rotating shaft 213 is arranged in the middle of the extrusion cylinder 21. A partition plate 214 is arranged in the upper part of the extrusion cylinder 21. Slide grooves 215 are penetrated and opened on both sides of the extrusion cylinder 21. A first filter screen 216 is arranged at the bottom of the extrusion cylinder 21. Limit plates 25 with opposite limiting directions are arranged on both sides of the first filter screen 216. The larger diameter of the liquid inlet holes 211 than that of the liquid outlet holes 212 makes the liquid inlet speed greater than the liquid outlet speed. Thus, when the water hammer effect occurs, the thrust of the water hammer mainly acts on the extrusion plate 241.

[0027] The rotating ring 24 is rotatably installed on the rotating shaft 213, and the rotating ring 24 is slidably connected to the bottom of the partition plate 214. Extrusion plates 241 are arranged on both sides of the upper part of the rotating ring 24 in a mirror image manner. The extrusion plates 241 are attached to the inner wall of the extrusion cylinder 21. An inclined extrusion block 242 is arranged at the bottom of the extrusion plate 241. A fixing plate 243 is arranged at the lower part of the rotating ring 24. Blocks 245 adapted to the buckles 251 are slidably installed on both sides of the bottom of the fixing plate 243 respectively. A first spring 244 is clamped between the block 245 and the fixing plate 243. The extrusion block 242 is used to extrude the matrix mixture on the conveyor belt 3 and is attached to the inner wall of the extrusion cylinder 21, thereby preventing the loss of liquid pressure.

[0028] The limit plate 25 is of an arc-shaped structure, and the inner diameter of the limit plate 25 is the same as the inner diameter of the extrusion cylinder 21. The cross-section of the limit plate 25 is a wedge-shaped structure. A plurality of buckles 251 are equidistantly arranged on the inner wall of the limit plate 25. Second springs 252 are fixedly installed on both sides of the limit plate 25. The wedge-shaped structure is used to push the movement of the limit plate 25, and the buckles 251 are used to limit the rotation of the extrusion plate 241.

[0029] A lever 261 is hinged on the support 26. A ratchet 262 is arranged at the upper end of the lever 261. Connecting rods 263 are hinged on both sides of the lever 261. One side of the connecting rod 263 is hinged with a push rod 264. The push rod 264 is slidably installed inside the extrusion cylinder 21, and a wedge block 265 is arranged at the end of the push rod 264. The wedge block 265 is slidably connected with the limiting plate 25. The ratchet 262 is used to push the lever 261 to rotate around the support 26 when the conveyor belt 3 moves, so that the lever 261 drives the push rod 264 to move, thereby making the wedge block 265 at the end of the push rod 264 drive the limiting plate 25 to move.

[0030] A plurality of conical conveying grooves 31 are arranged on the conveyor belt 3. The conveying grooves 31 are adapted to the extrusion plate 241. A second filter screen 32 is hinged on one side below the conveying groove 31. The bottom of the conveying groove 31 penetrates through the conveyor belt 3, and a plurality of scraping plates 33 are arranged outside the conveyor belt 3. The annular conveyor belt 3 can convey materials in a cycle, and the rotation of the lever 261 is controlled by the scraping plate 33.

[0031] Embodiment 2

[0032] The conveyor belt 3 of the present utility model is controlled by a motor, and the rotation of the motor is controlled by the control module 5;

[0033] The included angle between the extrusion plates 241 of the present utility model should be such that the liquid inlet holes 211 are always on the same side of the extrusion plates 241, so as to avoid liquid loss from the liquid inlet holes 211;

[0034] A rubber sealing ring is arranged outside the extrusion plate 241 of the present utility model;

[0035] The second filter screen 32 of the present utility model can be turned over, which is convenient for discharging materials and deeply cleaning the filter screen.

[0036] Embodiment 3

[0037] Working principle: When the device is in use, first add the matrix material into the conveying groove 31. As the motor at the bottom of the conveying groove 31 moves, the conveying groove 31 loaded with materials moves into the extrusion cylinder 21. At this time, by closing the electric ball valve 23 on one side, a water hammer effect is generated in the pipeline 22 by the inertia of the water flow. The water hammer is used to push the extrusion plate 241 downward from the liquid inlet hole 211. After the extrusion plate 241 moves downward, it drives the rotating ring 24 to rotate, and then drives the fixed plate 243 to rotate. The rotation of the fixed plate 243 drives the clamping block 245 to be engaged with the buckle 251 on the limiting plate 25, preventing the extrusion plate 241 from reversing. And the extrusion plate 241 is pulsed by repeatedly opening and closing the electric ball valve 23, so that there is a rebound space for the filter cake in the conveying groove 31, and then the filtrate passes through the filter cake, thereby improving the drying degree of the matrix residue;

[0038] After drying is completed, the motor drives the conveying trough 31 to move. After the conveying trough 31 moves, the scraper 33 pushes the pawl 262, thereby driving the lever 261 to rotate. The pawl 262 on the other side is not affected by the scraper 33. After the lever 261 rotates, it drives the two push rods 264 on both sides to move in opposite directions. After the push rod 264 moves, it drives the wedge block 265 to move, thereby causing the wedge block 265 to drive the lifting of the limiting plate 25, thus driving the rise and fall of the buckle 251;

[0039] During the continuous rotation of the conveyor belt 3, the conveyor belt 3 drives the conveying trough 31 to flip, so that the pressed filter cake falls off the conveying trough 31. Moreover, the hinged second filter screen 32 also flips, so that the spray pipe 4 at the bottom of the conveying trough 31 cleans the conveying trough 31 and the second filter screen 32, thereby restoring the filtering efficiency of the second filter screen 32.

Claims

1. A disc-type pressure filter device, characterized in that: The invention comprises a support (1) and a filtering mechanism (2), wherein the filtering mechanism (2) comprises an extrusion cylinder (21) fixedly mounted on the support (1), wherein the extrusion cylinder (21) is penetrated by two conveyor belts (3), wherein the top end of the extrusion cylinder (21) is connected to a plurality of pipes (22), wherein the ends of the pipes (22) are provided with spray pipes (4), and an electric ball valve (23) is also provided on the pipes (22), wherein the electric ball valve (23) and the conveyor belt (3) are controlled by a control module (5); a rotating ring (24) is rotatably connected inside the extrusion cylinder (21), and limit plates (25) are slidably mounted on both sides of the bottom of the inner wall of the extrusion cylinder (21), and a support (26) is provided on the lower outer side of the extrusion cylinder (21), wherein the support (26) is slidably connected to the side end of the conveyor belt (3).

2. A disc-type pressure filter device according to claim 1, characterized in that: The extrusion barrel (21) comprises liquid inlet holes (211) symmetrically arranged on both sides of the top, and liquid outlet holes (212) symmetrically arranged on both sides of the upper part of the extrusion barrel (21), wherein the diameter of the liquid inlet hole (211) is greater than the diameter of the liquid outlet hole (212), a rotating shaft (213) is arranged in the middle of the extrusion barrel (21), a partition plate (214) is arranged on the upper part of the extrusion barrel (21), sliding grooves (215) are arranged through both sides of the extrusion barrel (21), a No. 1 filter screen (216) is arranged at the bottom of the extrusion barrel (21), and limit plates (25) with opposite limiting directions are arranged on both sides of the No. 1 filter screen (216).

3. A disc-type pressure filter device according to claim 1, characterized in that: The rotating ring (24) is rotatably mounted on the rotating shaft (213), and the rotating ring (24) is slidably connected to the bottom of the partition (214). Extrusion plates (241) are mirror-imaged on both sides of the upper part of the rotating ring (24). The extrusion plates (241) are fitted with the inner wall of the extrusion cylinder (21), and an inclined extrusion block (242) is arranged at the bottom of the extrusion plate (241). A fixed plate (243) is arranged at the lower part of the rotating ring (24), and blocks (245) adapted to the buckle (251) are slidably mounted on both sides of the bottom of the fixed plate (243), and a No. 1 spring (244) is clamped between the block (245) and the fixed plate (243).

4. A disc-type pressure filter device according to claim 1, characterized in that: The limiting plate (25) is an arc-shaped structure, and the inner diameter of the limiting plate (25) is the same as the inner diameter of the extrusion cylinder (21). The cross section of the limiting plate (25) is a wedge-shaped structure. A plurality of buckles (251) are equidistantly arranged on the inner wall of the limiting plate (25), and a No. 2 spring (252) is fixedly installed on both sides of the limiting plate (25).

5. The disc-type pressure filter device according to claim 1, characterized in that: A lever (261) is hinged on the support (26), a pawl (262) is provided at the upper end of the lever (261), connecting rods (263) are hinged on both sides of the lever (261), a push rod (264) is hinged on one side of the connecting rod (263), the push rod (264) is slidably installed inside the extrusion cylinder (21), and a wedge block (265) is provided at the end of the push rod (264), and the wedge block (265) is slidably connected to the limit plate (25).

6. The disc-type pressure filter device according to claim 1, characterized in that: The conveyor belt (3) is provided with a plurality of conical conveying grooves (31), the conveying grooves (31) are adapted to the extrusion plate (241), a second filter screen (32) is hingedly connected to one side below the conveying groove (31), the bottom of the conveying groove (31) passes through the conveyor belt (3), and a plurality of scrapers (33) are provided on the outside of the conveyor belt (3).

Images