Composite pressure pulp screening machine

Abstract

The utility model relates to the technical field of pressure screens, in particular to a composite pressure pulp screening machine which comprises a base, four supporting legs are symmetrically and fixedly connected to the bottom face of the base, a first motor and a screening barrel are fixedly connected to the top face of the base, and a water inlet pipe is arranged on the top face of the screening barrel. And the screen cylinder is arranged in the screening barrel, the top end of the screen cylinder is fixedly connected with a flow guide plate, the bottom end of the screen cylinder is fixedly connected with a partition plate, and the outer walls of the flow guide plate and the partition plate make contact with the inner wall of the screening barrel. According to the multi-directional washing device, through the cooperative arrangement of the second motor, the lead screw, the sleeve, the connecting ring, the first rotating base, the electric telescopic rod, the corrugated pipe, the nozzle, the second rotating base and the screen cylinder, the nozzle can be driven by the electric telescopic rod to swing, and therefore multi-directional washing of the inner wall of the screen cylinder is achieved; and through cooperative arrangement of a third motor, a gear, an annular sleeve, an annular frame, a scraping plate, a fixing ring and a gear ring, stubborn blockages on the inner wall of the screen cylinder are scraped away through the scraping plate, and the frequency of shutdown maintenance is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of pressure screens, in particular to a composite pressure pulp screen. Background Art

[0002] In the production process of non-woven bag paper, pulp screening is a crucial link. The pulp usually contains various fibers, fillers and impurities, which need to be separated and purified by a pulp screen to obtain pulp that meets production requirements.

[0003] However, during the use of traditional pulp screening machines, since the pulp contains a large amount of fiber and sticky substances, these substances are easy to adhere to the inner wall of the screen drum during the screening process, forming a clogging layer. As time goes by, the clogging layer will gradually thicken, causing the screen holes to be blocked and the screening efficiency to drop significantly. In addition, when cleaning the inner wall of the screen drum, it is often necessary to stop the machine for manual cleaning, which not only reduces production efficiency, but also increases the labor intensity and safety risks of operators. Utility Model Content

[0004] The purpose of the present utility model is to provide a composite pressure pulp screen to solve the problems raised in the above background technology.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] A composite pressure screen, comprising:

[0007] The base has four supporting legs symmetrically fixedly connected to the bottom surface, a motor 1 and a screening bucket fixedly connected to the top surface, and a water inlet pipe is provided on the top surface of the screening bucket;

[0008] The sieve drum is arranged inside the screening barrel, with a guide plate fixedly connected to the top and a partition plate fixedly connected to the bottom, the outer walls of the guide plate and the partition plate are in contact with the inner wall of the screening barrel, and the bottom surface of the sieve drum is fixedly connected to a rotating column, and the outer wall of the rotating column is rotatably connected to the bottom surface of the screening barrel;

[0009] The cleaning mechanism is arranged inside the screening barrel and above the screening drum.

[0010] Preferably, the motor shaft of the motor 1 is connected to a toothed pulley 1, the outer wall of the rotating column is sleeved and fixed with a toothed pulley 2, and a transmission belt is connected between the toothed pulley 1 and the toothed pulley 2.

[0011] Preferably: a pulp inlet is provided on the outer wall of the screening barrel above the guide plate, a pulp outlet is provided on the outer wall of the screening barrel above the partition plate, and the bottom end of the rotating column is connected to a slag discharge pipe.

[0012] Further, the cleaning mechanism includes:

[0013] Motor 2 is fixed on the top surface of the screening barrel, the motor shaft of the motor 2 passes through the top surface of the screening barrel and is transmission-connected to a screw rod, the bottom end of the screw rod is fixedly connected to a limit plate;

[0014] The flushing unit is screwed and fixed on the outer wall of the screw rod and is used for flushing the inner wall of the screen drum.

[0015] Further, the flushing unit includes:

[0016] The inner wall of the sleeve is screwed together with the outer wall of the screw rod, a water inlet is opened on the top, the water inlet and the water inlet pipe are connected through a hose, and a scraping unit is rotatably sleeved on the outer wall;

[0017] The connecting ring is sleeved and fixed on the outer wall of the sleeve, and the bottom surface is symmetrically fixedly connected with two rotating seats.

[0018] Two bellows are provided and fixed symmetrically to the outer wall of the sleeve near the bottom end. The ends of the two bellows that are away from each other are fixedly connected to the nozzles. The outer walls of the two nozzles are fixedly connected to the second rotating seat.

[0019] Two electric telescopic rods are provided, and both ends of the electric telescopic rods are rotatably connected to the second rotating seat and the first rotating seat respectively.

[0020] Furthermore, the outer wall of the sleeve is fixedly connected to a motor frame, a third motor is fixedly inserted into the interior of the motor frame, and a motor shaft of the third motor is transmission-connected to a gear.

[0021] Furthermore, the scraping unit includes an annular sleeve, the inner wall of the annular sleeve is rotatably connected to the outer wall of the sleeve, the outer wall of the annular sleeve is sleeved and fixed with an annular frame, the outer wall of the annular frame is fixedly connected with four scrapers at equal angles, the bottom ends of the four scrapers are fixedly connected by a fixing ring, the outer wall of the annular sleeve is sleeved and fixed with a gear ring, and the gear ring and the gear are engaged for transmission.

[0022] Compared with the prior art, the beneficial effects of the present invention are:

[0023] Through the coordination among motor 2, screw rod, sleeve, connecting ring, rotating seat 1, electric telescopic rod, bellows, nozzle, rotating seat 2 and screen drum, clean water is injected into the sleeve while the screen drum rotates, and the electric telescopic rod is controlled to repeatedly extend and contract, so that the nozzle can swing under the drive of the electric telescopic rod, thereby realizing multi-directional flushing of the inner wall of the screen drum, and then through the coordination among motor 3, gear, annular sleeve, annular frame, scraper, fixed ring and gear ring, the engagement of Shudie gear and gear ring can make the scraping unit rotate, so that the scraper can scrape stubborn blockages on the inner wall of the screen drum, reducing the number of shutdowns for maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the overall structure of a composite pressure pulp screen machine of the utility model;

[0025] Figure 2 This is a schematic diagram of the internal structure of a composite pressure pulp screen machine of the utility model;

[0026] Figure 3 This is a schematic diagram of the cleaning mechanism structure in the utility model;

[0027] Figure 4 This is a schematic diagram of the structure of the flushing unit in the utility model;

[0028] Figure 5 It is a schematic structural diagram of the scraping unit in the utility model.

[0029] In the figure: 100, base; 110, support leg; 111, motor 1; 112, toothed pulley 1; 113, toothed pulley 2; 114, transmission belt; 120, screening barrel; 121, pulp inlet; 122, pulp outlet; 123, water inlet pipe; 130, screening drum; 131, guide plate; 132, partition plate; 133, rotating column; 134, slag discharge pipe; 200, cleaning mechanism; 210, motor 2; 211, screw; 2 12. Limit plate; 220. Flushing unit; 221. Sleeve; 222. Water inlet; 223. Motor frame; 224. Motor three; 2241. Gear; 225. Connecting ring; 226. Rotating seat one; 227. Electric telescopic rod; 228. Bellows; 229. Nozzle; 2291. Rotating seat two; 230. Scraping unit; 231. Annular sleeve; 232. Annular frame; 233. Scraper; 234. Fixed ring; 235. Gear ring. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0031] See also Figures 1 to 5In an embodiment of the present invention, a compound pressure pulp screening machine includes a base 100, the bottom surface of the base 100 is symmetrically fixedly connected to four supporting legs 110, the top surface of the base 100 is fixedly connected to a motor 111 and a screening barrel 120, the top surface of the screening barrel 120 is provided with a water inlet pipe 123, the interior of the screening barrel 120 is provided with a screening drum 130, the top of the screening drum 130 is fixedly connected to a guide plate 131, the bottom end of the screening drum 130 is fixedly connected to a partition plate 132, the outer walls of the guide plate 131 and the partition plate 132 are in contact with the inner wall of the screening barrel 120, the bottom surface of the screening drum 130 is fixedly connected to a rotating column 133, the outer wall of the rotating column 133 and The bottom surface of the screening barrel 120 is rotatably connected, and a cleaning mechanism 200 is provided inside the screening barrel 120. The cleaning mechanism 200 is located above the screening drum 130. The motor shaft of the motor 111 is connected to the toothed pulley 112. The outer wall of the rotating column 133 is fixed with a toothed pulley 2 113. A transmission belt 114 is connected between the toothed pulley 112 and the toothed pulley 2 113. The outer wall of the screening barrel 120 is provided with a slurry inlet 121 above the guide plate 131. The outer wall of the screening barrel 120 is provided with a slurry outlet 122 above the partition plate 132. The bottom end of the rotating column 133 is connected to the slag discharge pipe 134.

[0032] Specifically, the slurry is fed into the screening barrel 120 through the slurry inlet 121, and the slurry enters the screen drum 130 under the guidance of the guide plate 131, and the motor 111 is started, so that the motor shaft of the motor 111 is driven by the toothed pulley 112, thereby rotating the screen drum 130. The toothed pulley 112, the toothed pulley 2 113 and the transmission belt 114 form a synchronous pulley group for rotating the screen drum 130 as the motor 111 is started. The synchronous pulley group is a technology well known to technicians in this technical field and is a commonly used device in this technical field. It will not be described in detail here. In the screen drum 130, the slurry is subjected to centrifugal force and The separation process starts due to the pressure difference between the inside and outside of the screen drum 130. The coarse material (including coarse slag and fiber bundles, etc.) cannot pass through the sieve holes on the screen drum 130 due to its large particles, so it is retained inside the screen drum 130 and moves downward along the inner wall of the screen drum 130, and is finally discharged through the slag discharge pipe 134. The good pulp (that is, the fine particles and liquid part after filtering through the screen drum 130) flows out through the sieve holes on the screen drum 130 under the action of pressure or centrifugal force, and the good pulp flowing out of the sieve holes is finally discharged through the pulp outlet 122. When blockage is detected on the inner wall of the screen drum 130, the cleaning mechanism 200 will start to clean the inner wall of the screen drum 130.

[0033] Example 1

[0034] like Figure 3-4As shown, in this embodiment, the cleaning mechanism 200 includes a second motor 210, which is fixed to the top surface of the screening barrel 120. The motor shaft of the second motor 210 passes through the top surface of the screening barrel 120 and is transmission-connected with a screw rod 211. The bottom end of the screw rod 211 is fixedly connected to a limit plate 212. The outer wall of the screw rod 211 is screwed and fixed with an inner wall flushing unit 220 for flushing the screen drum 130. The flushing unit 220 includes a sleeve 221. The inner wall of the sleeve 221 is screwed and connected to the outer wall of the screw rod 211. A water inlet 222 is provided at the top of the sleeve 221. The water inlet 222 and The water inlet pipe 123 is connected through a hose, and a scraping unit 230 is rotatably sleeved on the outer wall of the sleeve 221. A connecting ring 225 is sleeved and fixed on the outer wall of the sleeve 221. Two rotating seats 226 are symmetrically fixedly connected to the bottom surface of the sleeve 221. Two bellows 228 are symmetrically arranged on the outer wall of the sleeve 221 near the bottom end. The ends of the two bellows 228 that are away from each other are fixedly connected to nozzles 229. The outer walls of the two nozzles 229 are fixedly connected to rotating seat 2 2291. An electric telescopic rod 227 is rotatably connected between rotating seat 1 226 and rotating seat 2 2291.

[0035] In this embodiment, when blockage is detected in the screen drum 130, motor 210 is started, and the motor shaft of motor 210 is transmitted to the sleeve 221, so that the sleeve 221 moves downward along the sleeve 221 to the lowest point, so that the nozzle 229 is facing the inner wall of the screen drum 130, and clean water is injected into the water inlet 222 through the water inlet pipe 123. After the clean water enters the sleeve 221, it is sprayed from the two nozzles 229 to the inner wall of the screen drum 130. At the same time, motor 111 is started to rotate the screen drum 130, and the electric telescopic rod 227 is controlled to repeatedly extend and contract, thereby driving the nozzle 229 to swing up and down, and the inner wall of the screen drum 130 is flushed in multiple directions, effectively removing blockages and scale.

[0036] Example 2

[0037] On the basis of the first embodiment, in order to compensate for the stubborn scale that may still exist on the inner wall of the screen drum 130 during the flushing of the nozzle 229 in the first embodiment.

[0038] like Figure 3 and Figure 5As shown, in this embodiment, the outer wall of the sleeve 221 is fixedly connected to the motor frame 223, the interior of the motor frame 223 is fixedly plugged with a motor three 224, the motor shaft of the motor three 224 is transmission-connected with a gear 2241, the scraping unit 230 includes an annular sleeve 231, the inner wall of the annular sleeve 231 and the outer wall of the sleeve 221 are rotatably connected, the outer wall of the annular sleeve 231 is sleeved and fixed with an annular frame 232, the outer wall of the annular frame 232 is fixedly connected with four scrapers 233 at equal angles, the bottom ends of the four scrapers 233 are fixedly connected by a fixing ring 234, the outer wall of the annular sleeve 231 is sleeved and fixed with a gear ring 235, and the gear ring 235 and the gear 2241 are meshed for transmission.

[0039] During specific implementation, when the flushing unit 220 moves to the inside of the screen drum 130 for high-pressure flushing, the scraping unit 230 moving with the sleeve 221 is also located inside the screen drum 130, and the end sides of the four scrapers 233 are in contact with the inner wall of the screen drum 130. When the screen drum 130 is flushed and rotated, the scraper 233 will scrape off the blockage on the inner wall of the screen drum 130. The motor three 224 can also be started to engage the gear 2241 and the ring gear 235 for transmission, so that the scraping unit 230 and the screen drum 130 rotate in the opposite direction, thereby improving the scraping effect.

[0040] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0041] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A composite pressure screen, characterized in that: include: The base (100) has four supporting legs (110) fixedly connected to each other in a symmetrical manner on its bottom surface, a motor (111) and a screening barrel (120) fixedly connected to its top surface, and a water inlet pipe (123) provided on the top surface of the screening barrel (120); The sieve drum (130) is arranged inside the screening barrel (120), the top end of which is fixedly connected to a guide plate (131), and the bottom end of which is fixedly connected to a partition plate (132), the outer walls of the guide plate (131) and the partition plate (132) are in contact with the inner wall of the screening barrel (120), the bottom surface of the sieve drum (130) is fixedly connected to a rotating column (133), and the outer wall of the rotating column (133) is rotatably connected to the bottom surface of the screening barrel (120); The cleaning mechanism (200) is arranged inside the screening barrel (120) and is located above the screening drum (130).

2. The composite pressure screen according to claim 1, characterized in that: The motor shaft of the motor 1 (111) is connected to the toothed pulley 1 (112), the outer wall of the rotating column (133) is sleeved and fixed with the toothed pulley 2 (113), and a transmission belt (114) is connected between the toothed pulley 1 (112) and the toothed pulley 2 (113).

3. The composite pressure screen according to claim 1, characterized in that: A pulp inlet (121) is provided on the outer wall of the screening barrel (120) above the guide plate (131), a pulp outlet (122) is provided on the outer wall of the screening barrel (120) above the partition plate (132), and a slag discharge pipe (134) is connected to the bottom end of the rotating column (133).

4. The composite pressure screen according to claim 1, characterized in that: The cleaning mechanism (200) comprises: Motor 2 (210) is fixed on the top surface of the screening barrel (120), the motor shaft of motor 2 (210) passes through the top surface of the screening barrel (120) and is connected to a screw rod (211) in a transmission manner, and the bottom end of the screw rod (211) is fixedly connected to a limit plate (212); The flushing unit (220) is screwed and fixed to the outer wall of the screw rod (211) and is used to flush the inner wall of the screen drum (130).

5. The composite pressure screen according to claim 4, characterized in that: The flushing unit (220) comprises: The inner wall of the sleeve (221) is screwed together with the outer wall of the screw rod (211), and a water inlet (222) is provided at the top. The water inlet (222) and the water inlet pipe (123) are connected through a hose, and a scraping unit (230) is rotatably sleeved on the outer wall; A connecting ring (225) is sleeved and fixed on the outer wall of the sleeve (221), and two rotating seats (226) are symmetrically fixedly connected to the bottom surface; Two bellows (228) are provided and fixed symmetrically to the outer wall of the sleeve (221) near the bottom end. The ends of the two bellows (228) that are away from each other are fixedly connected to the nozzle (229). The outer walls of the two nozzles (229) are fixedly connected to the second rotating seat (2291); Two electric telescopic rods (227) are provided, and the two ends of the electric telescopic rods (227) are rotatably connected to the second rotating seat (2291) and the first rotating seat (226) respectively.

6. The composite pressure screen according to claim 5, characterized in that: The outer wall of the sleeve (221) is fixedly connected with a motor frame (223), the interior of the motor frame (223) is plugged and fixed with a motor three (224), and the motor shaft of the motor three (224) is transmission-connected with a gear (2241).

7. The compound pressure screen according to claim 5, characterized in that: The scraping unit (230) comprises an annular sleeve (231), the inner wall of the annular sleeve (231) is rotatably connected to the outer wall of the sleeve (221), an annular frame (232) is sleeved and fixed to the outer wall of the annular sleeve (231), four scrapers (233) are fixedly connected to the outer wall of the annular frame (232) at equal angles, the bottom ends of the four scrapers (233) are fixedly connected via a fixing ring (234), a gear ring (235) is sleeved and fixed to the outer wall of the annular sleeve (231), and the gear ring (235) and the gear (2241) are meshed and driven.

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