Dehydration vibrating screen equipment capable of automatically cleaning screen plate

Abstract

The utility model discloses dewatering vibrating screen equipment capable of automatically cleaning a screen plate and belongs to the technical field of vibrating screens. The vibrating screen comprises a machine shell with a feeding port and a discharging port, a vibration exciter connected with the machine shell, and a screen plate and a cleaning mechanism which are arranged in the machine shell. The cleaning mechanism comprises an air injection part, a transmission part and a driving part; the air spraying piece is arranged below the sieve plate, an air spraying opening of the air spraying piece faces the sieve plate, and the air spraying piece is fixedly connected with the transmission piece; the transmission part is in transmission connection with the driving part and is used for driving the air injection part to reciprocate on the same axis, so that the moving range of the air injection part covers the lower surface of the sieve plate. The air injection part is driven by the transmission part to reciprocate below the sieve plate so as to inject the whole bottom surface of the sieve plate, and meanwhile, the air injection part injects upward air to the sieve plate, so that fine materials clamped by sieve holes and materials adhered to the sieve surface are easily cleaned, and the problem that the sieve plate cannot be automatically cleaned in the prior art is practically solved.

Description

Technical Field

[0001] The utility model relates to the technical field of vibrating screens, in particular to a dehydrating vibrating screen device capable of automatically cleaning a screen plate. Background Art

[0002] Dewatering vibrating screen equipment utilizes the high-frequency, low-amplitude motion of a vibrating screen to gradually separate the slurry containing sand, gravel, and soil discharged during shield tunneling. The separated slurry is conditioned and transported back to the excavation face, while the separated sand, gravel, and soil are directly transported away. Dewatering vibrating screens separate coarse and fine materials based on particle size, using a sieve plate to pass fine particles smaller than the sieve openings through the plate while retaining coarse particles larger than the sieve openings. Screen plate blockage is common during use, primarily due to the high concentration of fine particles in the screening material. These fine particles are close in size to the sieve openings and easily become lodged in the sieve openings, causing blockage. Furthermore, the screening material is wet slurry, which tends to clump and adhere to the screen surface, blocking the sieve openings during screening. This often requires regular manual cleaning, which is labor-intensive and time-consuming, significantly impacting screening efficiency.

[0003] Currently, a vibrating screen for ore dewatering (Announcement No. CN218014057U) has been disclosed on the market. It includes a screen plate, a scraper and a water spraying device that can move back and forth in the vibrating screen. The water spraying device is arranged above the screen plate. The material on the screen plate is cleaned by moving the water spraying device in conjunction with the scraper. However, since the device is provided with a scraper and the water spraying device is arranged above the screen plate, the scraper can easily press the crushed sand and gravel into the screen holes during the sliding process. Combined with the top-down spraying of the water spraying device, the crushed sand and gravel with larger particle sizes can easily be crushed in the screen holes, resulting in the problem that the screen plate cannot be cleaned.

[0004] Therefore, it is of practical value to study a dehydration vibrating screen equipment that can automatically clean the screen plate. Utility Model Content

[0005] The utility model provides a dehydration vibration screen device capable of automatically cleaning a screen plate, which is used to solve the problem in the prior art that the screen plate cannot be automatically cleaned.

[0006] The utility model provides a dehydration vibration screen device capable of automatically cleaning a sieve plate, comprising: a casing with a feed port and a discharge port, a vibrator connected to the casing, a sieve plate arranged in the casing, and a cleaning mechanism;

[0007] The cleaning mechanism includes an air jet component, a transmission component and a driving component;

[0008] The jet component is arranged below the sieve plate, the jet port of the jet component faces the sieve plate, and the jet component is connected and fixed to the transmission component;

[0009] The transmission member is in transmission connection with the driving member, and the transmission member is used to drive the jet member to move back and forth on the same axis, so that the movement range of the jet member covers the lower surface of the screen plate.

[0010] In one embodiment, the air injection component includes an air injection pipe, a hose and an air storage tank;

[0011] The air injection pipe is connected to the air storage tank through the hose. A plurality of nozzles are connected to the air injection pipe. The plurality of nozzles are all directed toward the sieve plate. The plurality of nozzles are regularly arranged on the air injection pipe.

[0012] In one embodiment, the plurality of nozzles are fan-shaped nozzles.

[0013] In one embodiment, the transmission member includes at least two transmission shafts and at least two transmission chains;

[0014] The two transmission shafts are rotatably mounted in the housing, the two transmission shafts are both disposed below the sieve plate, the two transmission shafts are arranged oppositely on both sides of the sieve plate, and one transmission shaft is in transmission connection with the driving member;

[0015] The two transmission chains are both wound around the two transmission shafts, the two transmission chains are both meshed and connected with the two transmission shafts, and the two transmission chains are respectively connected and fixed to the two ends of the jet component.

[0016] In one embodiment, the dewatering vibrating screen device further includes a tensioning mechanism;

[0017] The tensioning mechanism is connected to the transmission chain, and is used to adjust the tension of the transmission chain.

[0018] In one embodiment, the tensioning mechanism includes a tensioning screw, a fixing block with a screw through hole, a fixing shaft and a pressure wheel;

[0019] The housing is provided with a waist-shaped through hole;

[0020] The fixed shaft is slidably mounted in the waist-shaped through hole, and the fixed shaft is equipped with the pressing wheel, which abuts against the transmission chain;

[0021] The fixing block is fixed on the housing, the tensioning screw is threaded into the fixing block, and one end of the tensioning screw can abut against the fixing shaft;

[0022] The threaded connection of the tensioning screw is used to adjust the pressure applied by the pressure wheel to the transmission chain.

[0023] In one embodiment, the tensioning mechanism further includes a sealing cover;

[0024] The tensioning screw and the fixing block are both installed outside the casing. The tensioning screw, the fixing block and the waist-shaped through hole are all wrapped in the sealing cover. The sealing cover is detachably sealed to the casing.

[0025] In one embodiment, the driving member includes a bidirectional motor and a drive chain;

[0026] The bidirectional motor is arranged on the outside of the sieve plate, and the bidirectional motor is transmission-connected to the drive chain;

[0027] The drive chain is wound around the bidirectional motor and one of the transmission shafts, and the drive chain is meshed and connected with the transmission shaft.

[0028] In one embodiment, the transmission chain has an upper chain section and a lower chain section;

[0029] The moving range of the air-jet component is within the upper chain area, and the pressure wheel is arranged in the lower chain area.

[0030] In one embodiment, the transmission member includes a guide rail portion and a sliding portion, the guide rail portion is provided below the sieve plate, the sliding portion is slidably mounted on the guide rail portion, and the ejection member is fixed to the sliding portion;

[0031] The driving member is used to drive the sliding portion to reciprocate on the guide rail portion.

[0032] It can be seen from the above technical solutions that the present invention has the following advantages:

[0033] The embodiment of the utility model provides a dewatering vibrating screen device that can automatically clean the screen plate, including: a casing with a feed port and a discharge port, an exciter connected to the casing, a screen plate arranged in the casing and a cleaning mechanism, the cleaning mechanism including a jet component, a transmission component and a driving component; the jet component is arranged below the screen plate, the jet port of the jet component faces the screen plate, and the jet component is fixedly connected to the transmission component; the transmission component is transmission-connected to the driving component, and the transmission component is used to drive the jet component to move back and forth on the same axis so that the moving range of the jet component covers the lower surface of the screen plate. Therefore, when in use, the jet component is driven by the transmission component to move back and forth below the screen plate to spray the entire bottom surface of the screen plate, and at the same time, the jet component sprays upward gas to the bottom of the screen plate, which can easily clean up fine materials stuck in the screen holes and materials adhering to the screen surface, avoiding the situation in which the top-down spraying in the prior art crushes larger particle size gravel in the screen holes, and effectively solves the problem that the screen plate in the prior art cannot be automatically cleaned. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0035] Figure 1 A schematic diagram of the overall structure of a dehydration vibrating screen device capable of automatically cleaning the screen plate provided in Example 1 of the present utility model;

[0036] Figure 2 A schematic cross-sectional view of the overall structure of a dewatering vibrating screen device capable of automatically cleaning the screen plate provided in the first embodiment of the present invention;

[0037] Figure 3 A rear view schematic diagram of the overall structure of a dewatering vibrating screen device capable of automatically cleaning the screen plate provided in the first embodiment of the present invention;

[0038] Figure 4 A schematic diagram of the tensioning mechanism structure of a dewatering vibrating screen device capable of automatically cleaning the screen plate provided in Example 1 of the present utility model;

[0039] Figure 5 A schematic cross-sectional view of the tensioning mechanism structure of a dewatering vibrating screen device capable of automatically cleaning the screen plate provided in the first embodiment of the present invention;

[0040] Figure 6 A schematic front view of a partial structure of a tensioning mechanism of a dewatering vibrating screen device capable of automatically cleaning a screen plate provided in the first embodiment of the present invention;

[0041] Figure 7 A schematic diagram of the active drive shaft structure of a dewatering vibrating screen device capable of automatically cleaning the screen plate provided in the first embodiment of the present invention;

[0042] Figure 8 A schematic diagram of the passive transmission shaft structure of a dewatering vibrating screen device capable of automatically cleaning the screen plate provided in the first embodiment of the present invention;

[0043] Figure 9 A schematic diagram of the overall structure of a dehydration vibrating screen device capable of automatically cleaning the screen plate provided in the second embodiment of the present utility model;

[0044] Figure 10 This is a schematic diagram of the passive transmission shaft structure of a dehydration vibrating screen device capable of automatically cleaning the screen plate provided in Example 3 of the present utility model.

[0045] Reference numerals:

[0046] 1. Casing; 10. Feed inlet; 11. Discharge outlet; 12. Waist-shaped through hole; 13. Sealing plate; 2. Vibrator; 3. Screen plate; 4. Cleaning mechanism; 40. Jet part; 400. Jet pipe; 401. Hose; 41. Transmission part; 410. Transmission shaft; 410a. Active transmission shaft; 410b. Passive transmission shaft; 411. Transmission chain; 4110. Upper chain area; 4111. Lower chain area; 412. Guide rail part; 413. Sliding part; 42. Driving part; 420. Bidirectional motor; 421. Drive chain; 5. Tensioning mechanism; 50. Tensioning screw; 51. Fixed block; 52. Fixed shaft; 53. Pressure wheel; 54. Sealing cover; 55. Bushing; 56. Nut; 57. Gasket; 58. Spring washer; 59. Bearing seat. DETAILED DESCRIPTION

[0047] The embodiment of the utility model provides a dehydration vibration screen device capable of automatically cleaning a sieve plate, which is used to solve the problem in the prior art that the sieve plate cannot be automatically cleaned.

[0048] In order to make the purpose, features, and advantages of the present invention more obvious and easy to understand, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described below 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 work are within the scope of protection of the present invention.

[0049] See also Figures 1 to 10 , shows an embodiment of the present utility model.

[0050] Example 1

[0051] This utility model provides a dehydration vibration screen equipment that can automatically clean the screen plate. Please refer to Figures 1 to 3 , comprising: a casing 1 having a feed port 10 and a discharge port 11, a vibrator 2 connected to the casing 1, a sieve plate 3 and a cleaning mechanism 4 arranged in the casing 1;

[0052] The cleaning mechanism 4 includes an air jet component 40, a transmission component 41 and a driving component 42;

[0053] The jet component 40 is provided below the sieve plate 3, with the jet port of the jet component 40 facing the sieve plate 3, and the jet component 40 is connected and fixed to the transmission component 41;

[0054] The transmission member 41 is in transmission connection with the driving member 42 . The transmission member 41 is used to drive the air-jet member 40 to move back and forth on the same axis, so that the moving range of the air-jet member 40 covers the lower surface of the sieve plate 3 .

[0055] Among them, the same axis includes but is not limited to one of the longitudinal axis of the sieve plate, the width and length axis of the sieve plate, or the diagonal axis of the sieve plate. As long as the jet part 40 is on the axis and can move to cover the entire lower surface of the sieve plate 3, technical personnel in this field can set it.

[0056] The working principle of this equipment is as follows: the equipment takes in mud through the feed port 10, and under the vibration of the vibrator 2, the mud will be sieved on the screen plate 3, and the sieved mud will flow out through the discharge port 11. In this process, various particles and mud will be left on the screen plate 3. When cleaning is required, the driving member 42 starts to drive the transmission member 41 to work, and the transmission member 41 drives the jet member 40 to move back and forth under the screen plate 3. During the movement, the jet of the jet member 40 will be aimed at the sieve holes of the sieve plate 3, and the crushed sand and gravel in the sieve holes will be blown upward, thereby achieving the purpose of automatic cleaning.

[0057] In the above structure, there are at least the following advantages: First, the jet element 40 can blow air toward the bottom of the sieve plate 3, and the jet element 40 can move back and forth at the bottom of the sieve plate 3. During this cleaning process, each sieve hole of the sieve plate 3 can be blown upward, and the fine materials stuck in the sieve holes and the materials adhering to the screen surface can be easily cleaned out, ensuring that the sieve holes of the sieve plate 3 are not blocked. Compared with the top-down water spray cleaning equipment in the prior art, the automatic cleaning function of the sieve plate 3 is effectively realized; second, the reciprocating movement of the jet element 40 eliminates the reliance on manual labor, saves the cost of hiring, training and managing labor, and is more cost-effective. In addition, the cleaning efficiency can be significantly improved through mechanical automatic cleaning. Mechanical cleaning can be carried out according to set standards and procedures to ensure that the cleaning effect is relatively consistent each time, reduce the fluctuation of cleaning quality caused by differences in manual operation, and achieve better results; third, the structure is simpler, using a simple transmission member 41, a drive member 42 and a jet element 40 to achieve automatic blowing cleaning with air as the power, and the manufacturing and operating costs are low.

[0058] As a possible example, in this embodiment, if Figure 1 and Figure 2 As shown, a feasible structure of the casing 1 is further provided, the top of the casing 1 is covered with a sealing plate 13, the feed port 10 passes through the sealing plate and the top of the casing 1, and a accommodating cavity is provided inside the casing 1 for accommodating the screen plate 3 and the cleaning mechanism 4. A discharge port 11 is provided on one of the side walls of the casing 1, and the feed port 10 and the discharge port 11 are both connected to the accommodating cavity. A spring fixing seat is also provided at the bottom of the casing 1. The material enters the accommodating cavity through the feed port 10 for vibration screening and finally flows out through the discharge port 11.

[0059] It should be noted that the sealing plate, the housing 1 and the spring fixing seat are preferably made of carbon steel, and the sieve plate 3 is preferably made of polyurethane or stainless steel.

[0060] As a possible example, in this embodiment, if Figure 3 As shown, a feasible structure of the injection component 40 is further provided, and the injection component 40 includes an injection pipe 400, a hose 401 and a gas tank; the injection pipe 400 is connected to the gas tank through the hose 401, and a plurality of nozzles are connected to the injection pipe 400, and the plurality of nozzles are all directed toward the sieve plate 3. The plurality of nozzles are regularly arranged on the injection pipe 400, and the gas in the gas tank is transmitted to the injection pipe 400 through the hose 401 and is ejected to the bottom of the sieve plate 3 through the nozzle.

[0061] In a specific embodiment, in order to improve the cleaning ability, multiple nozzles are fan-shaped nozzles, and the gas ejected from the nozzles is at a fan-shaped angle. During the continuous movement, the airflow at the fan-shaped angle reaches the bottom surface of the sieve plate 3 and overlaps with each other, thereby improving the cleaning ability of the sieve holes.

[0062] It should be understood that there are various ways to regularly arrange multiple nozzles. In this example, it is preferred to evenly arrange multiple nozzles on the air injection pipe 400. Other regular arrangement methods suitable for the sieve plate 3 can also be arranged by those skilled in the art.

[0063] In a specific embodiment, in order to improve the cleaning effect, the air storage tank is an air compression air storage tank, which is connected to the bottom of the jet pipe 400 through a hose 401. An electric valve is also provided on the outlet pipe of the air compression air storage tank to control the switch of the jet pipe 400. The high-pressure gas blowing has a good cleaning effect, avoids blockage, and has high equipment screening efficiency, thereby achieving a good cleaning effect.

[0064] It should be noted that the air injection pipe 400 is preferably made of stainless steel, and the hose 401 is preferably made of multi-layer rubber.

[0065] As a possible example, in this embodiment, if Figure 2As shown, a feasible structure of the transmission member 41 is further provided, and the transmission member 41 includes at least two transmission shafts 410 and at least two transmission chains 411; the two transmission shafts 410 are rotatably installed in the casing 1, and the two transmission shafts 410 are both arranged below the sieve plate 3, and the two transmission shafts 410 are relatively arranged on both sides of the sieve plate 3, and one transmission shaft 410 is transmission-connected to the driving member 42; the two transmission chains 411 are both wound around the outside of the two transmission shafts 410, and the two transmission chains 411 are meshed with the two transmission shafts 410, and the two transmission chains 411 are respectively connected and fixed to the two ends of the jet member 40. In actual application, the driving member 42 drives one of the transmission shafts 410 to rotate, and the rotation of the transmission shaft 410 drives the meshed transmission chain 411 to move, and the movement of the transmission chain 411 drives the jet member 40 to move. As the transmission chain 411 continues to move, the jet member 40 can realize reciprocating movement at the bottom of the sieve plate 3. After adopting a simple chain transmission mechanism, the structure is simple, and the production and operation costs are low.

[0066] In a specific embodiment, Figure 2 、 Figure 7 and Figure 8 As shown, the two transmission shafts 410 are respectively an active transmission shaft 410a and a passive transmission shaft 410b, and bearing seats 59 are respectively provided at both ends of the active transmission shaft 410a. The active transmission shaft 410a is horizontally mounted on the casing 1 through the bearing seats 59 on both sides, and the passive transmission shaft 410b is also horizontally mounted on the casing 1 through the bearing seats 59. The active transmission shaft 410a and the passive transmission shaft 410b are both provided with transmission sprockets for engaging and connecting the transmission chain 411. The transmission sprockets are provided at both ends of the transmission shaft 410, and the transmission chain 411 is wound around the active transmission shaft 410a and the passive transmission shaft 410b through the transmission sprocket to form a closed-loop chain. In addition, a drive chain 421 wheel for connecting to the driving member 42 is provided on the active transmission shaft 410a. The active transmission shaft 410a is transmission-connected to the driving member 42, and the active transmission shaft 410a is driven to rotate by the driving member 42, thereby realizing the reciprocating movement of the jet member 40.

[0067] In a specific embodiment, in addition to being horizontally installed on the casing 1, the active transmission shaft 410a and the passive transmission shaft 410b can also be vertically installed through a connecting frame and installed between the bottom of the casing and the sieve plate. This structure can also realize the reciprocating movement of the jet component 40. Of course, after adopting this setting, the structural setting of the jet component 40 must be changed accordingly so that the movement range of the jet component 40 covers the entire bottom of the sieve plate 3.

[0068] It should be noted that the active transmission shaft 410a, the passive transmission shaft 410b, the drive chain 421 wheel, and the bearing seat 59 are preferably made of carbon steel, and the transmission sprocket is preferably made of stainless steel.

[0069] As a possible example, in this embodiment, if Figure 2 As shown, a feasible structure of the driving member 42 is further provided, and the driving member 42 includes a bidirectional motor 420 and a drive chain 421; the bidirectional motor 420 is arranged on the outside of the sieve plate 3, preferably, the bidirectional motor 420 is arranged outside the casing 1, and the bidirectional motor 420 is connected to the drive chain 421 for transmission; the drive chain 421 is wound around the bidirectional motor 420 and one of the transmission shafts 410, and the drive chain 421 is meshed with the transmission shaft 410, and the bidirectional motor 420 drives the drive chain 421 to move, and the drive chain 421 drives the active transmission shaft 410a to rotate. In order to avoid the jet member 40 touching the drive chain 421 during movement, when the jet member 40 is ready to move away from the edge of the sieve plate 3, the bidirectional motor 420 is reversed, so that the jet member 40 changes the moving direction and moves back to the middle of the sieve plate 3, thereby realizing reciprocating movement. After using this method, since the bidirectional motor 420 is arranged on the outside of the sieve plate 3, the mud and water on the sieve plate 3 cannot drip onto the bidirectional motor 420, reducing the possibility of damage and reducing maintenance costs.

[0070] It should be pointed out that, based on the above embodiment, since the jet element 40 is driven by the transmission chain 411, the distance between the jet element 40 and the sieve plate 3 can be adjusted by adjusting the tension of the transmission chain 411, so the tension of the transmission chain 411 is adjustable. Therefore, as a possible example, Figures 4 to 6 As shown, the dewatering vibrating screen equipment also includes a tensioning mechanism 5; the tensioning mechanism 5 is connected to the transmission chain 411, and the tensioning mechanism 5 is used to adjust the tension of the transmission chain 411. When the transmission chain 411 becomes tighter, the transmission chain 411 is stretched straighter, and the distance between the jet component 40 on the transmission chain 411 and the screen plate 3 is closer. When the transmission becomes loose, the transmission chain 411 is not stretched so straight, and the distance between the jet component 40 on the transmission chain 411 and the screen plate 3 is farther.

[0071] In a specific embodiment, Figures 4 to 6As shown, the tensioning mechanism 5 includes a tensioning screw 50, a fixing block 51 with a screw hole, a fixing shaft 52 and a pressure wheel 53; the housing 1 is provided with a waist-shaped through hole 12; the fixing shaft 52 is slidably installed in the waist-shaped through hole 12, and the fixing shaft 52 is equipped with a pressure wheel 53, which abuts against the transmission chain 411; the fixing block 51 is fixed to the housing 1, and the tensioning screw 50 is screwed into the fixing block 51, and one end of the tensioning screw 50 can abut against the fixing shaft 52; the screw of the tensioning screw 50 The connection is used to adjust the pressure applied by the pressure wheel 53 to the transmission chain 411. When the transmission chain 411 needs to be tightened, the threaded connection position of the tensioning screw 50 in the threaded hole is adjusted to make the threaded connection position deeper, so that the end of the tensioning screw 50 can move toward the fixed shaft 52. The fixed shaft 52 drives the pressure wheel 53 along the waist-shaped hole to move toward the transmission chain 411, increasing the pressure applied by the pressure wheel 53 to the transmission chain 411, thereby making the entire chain tighter. Loosening is the opposite, which will not be repeated here.

[0072] In a specific embodiment, Figures 4 to 6 As shown, in order to facilitate tensioning adjustment while maintaining the waterproof sealing performance of the casing 1, the tensioning mechanism 5 also includes a sealing cover 54; the tensioning screw 50 and the fixing block 51 are both installed outside the casing 1, and the tensioning screw 50, the fixing block 51 and the waist-shaped through hole 12 are all wrapped in the sealing cover 54, and the sealing cover 54 is detachably sealed to the casing 1. When it is necessary to adjust the tightness of the transmission chain 411, the sealing cover 54 is removed to expose the tensioning screw 50 and the fixing block 51, and by twisting the tensioning screw 50, the position of the pressure wheel 53 is adjusted, thereby achieving the tightness adjustment of the chain.

[0073] Similarly, a similar tensioning structure is also provided on the drive chain of the driving member 42 for adjusting the tension of the drive chain.

[0074] More specifically, based on the above embodiments, Figures 4 to 6 As shown, the tensioning mechanism 5 also includes a bushing 55, a nut 56, a washer 57 and a spring washer 58, that is, the fixed shaft 52 passes through the pressure wheel 53, the waist-shaped hole of the side plate of the housing 1 and the bushing from the inside of the housing 1 to the outside of the two side plates; the fixed shaft 52 is locked by the nut, washer and spring washer; Figure 7 As shown in the plan view, flat positions are provided on both sides of the fixed shaft 52 for inserting into the waist-shaped through hole 12; the fixed shaft 52 cooperates with the pressure wheel 53; the tensioning screw 50 passes through the screw hole fixing block 51 and the top column bushing; the pressure wheel 53 is configured as a grooved wheel, and the bottom of the grooved wheel is tightly pressed against the transmission chain 411; the sealing cover covers the fixed shaft 52 and the tensioning screw 50.

[0075] It should be understood that based on the above embodiment, it can be known that the jet member 40 is moved back and forth within a specific range by the forward and reverse motor. Therefore, it is better for the jet member 40 to move in an area closer to the sieve plate 3. As a possible example, Figure 2As shown, when the transmission shaft 410 is horizontally installed on the casing 1, the transmission chain 411 has an upper chain area 4110 and a lower chain area 4111, wherein the upper chain area 4110 refers to the chain area of the transmission chain 4111 adjacent to the sieve plate side, and the lower chain area 4111 refers to the chain area of the transmission chain 4111 away from the sieve plate side; the moving range of the jet component 40 is within the upper chain area 4110, and the pressure wheel 53 is arranged in the lower chain area 4111. In actual application, the jet component 40 can move back and forth in the upper chain area 4110, closer to the sieve plate 3, and after the pressure wheel 53 is arranged in the lower chain area 4111, the tightness adjustment of the transmission chain 411 is more efficient.

[0076] It should be noted that the tensioning screw 50 , the screw hole fixing block 51 , and the sealing cover are preferably made of carbon steel, and the pressure wheel 53 is preferably made of nylon.

[0077] Example 2

[0078] The second embodiment of the present invention provides a dehydration vibrating screen device that can automatically clean the screen plate, such as Figure 9 As shown, it is basically the same as the first embodiment, except that the driving member 42 does not include a bidirectional motor 420 and a driving chain 421, but the driving member 42 is only a driving motor, which is connected to the active transmission shaft 410a, and the output shaft of the driving motor drives the active transmission shaft 410a to rotate, thereby driving the transmission chain 411 to move, and then driving the movement of the jet member 40. In this embodiment, the jet member 40 will move along the transmission chain 411 on the outer circumference of the active transmission shaft 410a and the passive transmission shaft 410b. Of course, in order to ensure that the jet member 40 only moves in the upper chain area 4110, the driving motor can also be a bidirectional motor 420. By controlling the forward and reverse rotation of the bidirectional motor 420, the jet member 40 is restricted to move in the upper chain area 4110.

[0079] Example 3

[0080] The third embodiment of the present invention provides a dehydration vibrating screen device that can automatically clean the screen plate, such as Figure 10 As shown, it is basically the same as the first embodiment, except that the transmission member 41 does not include at least two transmission shafts 410 and at least two transmission chains 411, but the transmission member 41 includes a guide rail portion 412 and a sliding portion 413.

[0081] As a possible example, in this embodiment, if Figure 10As shown, the guide rail portion 412 is a transmission rod, and the sliding portion 413 is a slider. The transmission rod can be supported and mounted below the sieve plate 3. The slider can be slidably mounted on the transmission rod. The jet component 40 is mounted on the slider. The driving component 42 is connected to the transmission rod. In actual application, for example, a ball screw mechanism, a trapezoidal screw mechanism, and a reciprocating screw mechanism all provide the above-mentioned example structure, thereby driving the jet component 40 to move back and forth on the guide rail portion 412.

[0082] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments can still be modified, or some of the technical features thereof can be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

[0083] Finally, it should be noted that, in this article, relational terms such as first and second, etc. are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations.

Claims

1. A dehydration vibrating screen device capable of automatically cleaning a screen plate, comprising: A casing having a feed port and a discharge port, a vibrator connected to the casing, a sieve plate and a cleaning mechanism arranged in the casing; It is characterized in that The cleaning mechanism includes an air jet component, a transmission component and a driving component; The jet component is arranged below the sieve plate, the jet port of the jet component faces the sieve plate, and the jet component is connected and fixed to the transmission component; The transmission member is in transmission connection with the driving member, and the transmission member is used to drive the jet member to move back and forth on the same axis, so that the movement range of the jet member covers the lower surface of the screen plate.

2. The dehydration vibrating screen device capable of automatically cleaning the screen plate according to claim 1, characterized in that: The jetting parts include a jet pipe, a hose and a gas storage tank; The air injection pipe is connected to the air storage tank through the hose. A plurality of nozzles are connected to the air injection pipe. The plurality of nozzles are all directed toward the sieve plate. The plurality of nozzles are regularly arranged on the air injection pipe.

3. The dehydration vibrating screen equipment capable of automatically cleaning the screen plate according to claim 2, characterized in that: The plurality of nozzles are all fan-shaped nozzles.

4. The dehydration vibrating screen equipment capable of automatically cleaning the screen plate according to claim 1, characterized in that: The transmission member includes at least two transmission shafts and at least two transmission chains; The two transmission shafts are rotatably mounted in the housing, the two transmission shafts are both disposed below the sieve plate, the two transmission shafts are arranged oppositely on both sides of the sieve plate, and one transmission shaft is in transmission connection with the driving member; The two transmission chains are both wound around the two transmission shafts, the two transmission chains are both meshed and connected with the two transmission shafts, and the two transmission chains are respectively connected and fixed to the two ends of the jet component.

5. The dehydration vibrating screen device capable of automatically cleaning the screen plate according to claim 4, characterized in that: The dewatering vibrating screen equipment further includes a tensioning mechanism; The tensioning mechanism is connected to the transmission chain, and is used to adjust the tension of the transmission chain.

6. The dehydration vibrating screen device capable of automatically cleaning the screen plate according to claim 5, characterized in that: The tensioning mechanism includes a tensioning screw, a fixing block with a screw hole, a fixing shaft and a pressure wheel; The housing is provided with a waist-shaped through hole; The fixed shaft is slidably mounted in the waist-shaped through hole, and the fixed shaft is equipped with the pressing wheel, which abuts against the transmission chain; The fixing block is fixed on the housing, the tensioning screw is threaded into the fixing block, and one end of the tensioning screw can abut against the fixing shaft; The threaded connection of the tensioning screw is used to adjust the pressure applied by the pressure wheel to the transmission chain.

7. The dehydration vibrating screen device capable of automatically cleaning the screen plate according to claim 6, characterized in that: The tensioning mechanism further includes a sealing cover; The tensioning screw and the fixing block are both installed outside the casing. The tensioning screw, the fixing block and the waist-shaped through hole are all wrapped in the sealing cover. The sealing cover is detachably sealed to the casing.

8. The dehydration vibrating screen device capable of automatically cleaning the screen plate according to claim 6, characterized in that: The driving member includes a bidirectional motor and a drive chain; The bidirectional motor is arranged on the outside of the sieve plate, and the bidirectional motor is transmission-connected to the drive chain; The drive chain is wound around the bidirectional motor and one of the transmission shafts, and the drive chain is meshed and connected with the transmission shaft.

9. The dehydration vibrating screen device capable of automatically cleaning the screen plate according to claim 8, characterized in that: The transmission chain has an upper chain area and a lower chain area; The moving range of the air-jet component is within the upper chain area, and the pressure wheel is arranged in the lower chain area.

10. The dehydration vibrating screen equipment capable of automatically cleaning the screen plate according to claim 1, characterized in that: The transmission member includes a guide rail portion and a sliding portion; The guide rail portion is provided below the sieve plate, the sliding portion is slidably mounted on the guide rail portion, and the jetting member is fixedly connected to the sliding portion; The driving member is used to drive the sliding portion to reciprocate on the guide rail portion.

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