Stacked screw type sludge dewatering machine

Abstract

The utility model discloses a stacked spiral sludge dewatering machine which comprises a main body unit and a pretreatment unit, the main body unit comprises a dehydration machine box and a pretreatment box, a transmission shaft is rotationally installed in the dehydration machine box, spiral blades are arranged on the transmission shaft, and the transmission shaft is connected with a motor; the water inlet side of the dewatering machine box is connected with a pretreatment box through a pipeline, and the pretreatment unit is arranged in the pretreatment box; the pretreatment unit comprises a filter screen plate arranged at the bottom of a pretreatment box. According to the device, impurities in sludge can be effectively removed, and the impurities can be concentrated to the material collecting net hopper to be collected through matched use of the material removing plate and the corresponding transmission structure, so that the sludge pretreatment process is simplified; and the material collecting net hopper is provided with a convenient drawing handle, so that the collected material is taken out and cleaned more quickly and conveniently, and the sewage treatment efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of sludge treatment, in particular to a screw stacking type sludge dewatering machine. Background Art

[0002] The spiral stacking sludge dewatering machine is a kind of equipment used for sludge treatment. During the dewatering process, the sludge moves forward continuously with the rotation of the spiral shaft. Along the direction of the mud cake outlet, the pitch of the spiral shaft gradually decreases, the gap between the rings also gradually decreases, and the volume of the spiral cavity continues to shrink; under the action of the back pressure plate at the outlet, the internal pressure gradually increases. Under the continuous operation of the spiral driving shaft, the water in the sludge is squeezed out, and the solid content of the filter cake continues to increase, finally achieving continuous dewatering of the sludge.

[0003] In actual use, the traditional screw stack sludge dewatering machine is not equipped with a pretreatment device, which can easily lead to debris such as branches, gravel and broken glass in the sludge entering the screw stack sludge dewatering machine, causing wear on the screw shaft of the screw stack sludge dewatering machine and reducing its service life.

[0004] The existing patent application number is: CN202021255617.5, and the patent name is: A utility model patent for a pretreatment device for a screw-type sludge dewatering machine. Although this scheme uses a cylinder to drive the pressure plate to squeeze the sludge and uses a filter frame to block the debris, the sludge and water with the debris removed enter the bottom of the box, and then are discharged from the sewage pipe into the screw-type sludge dewatering machine, avoiding the debris from causing wear on the spiral shaft in the screw-type sludge dewatering machine; however, after the pretreatment operation is completed, the filter frame needs to be pulled out of the box, and then the debris in the filter frame needs to be dumped out for collection and treatment; this type of device has great inconvenience in the collection and treatment of impurities after sludge treatment, and the cleaning and maintenance process of the device consumes manpower and material resources, and has low work efficiency, and needs to be improved. Utility Model Content

[0005] The purpose of this section is to summarize some aspects of the embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and in the abstract and title of the utility model to avoid obscuring the purpose of this section, the abstract and the title of the utility model, and such simplifications or omissions shall not be used to limit the scope of the present invention.

[0006] Therefore, in order to solve the above technical problems, the present invention provides the following technical solutions: a spiral stacking sludge dewatering machine, comprising a main unit and a pretreatment unit;

[0007] The main unit includes a dehydration box and a pretreatment box, a transmission shaft is rotatably installed in the dehydration box, a spiral blade is arranged on the transmission shaft, and the transmission shaft is connected to a motor; the water inlet side of the dehydration box is connected to the pretreatment box through a pipeline, and the pretreatment unit is arranged in the pretreatment box;

[0008] The pretreatment unit includes a filter screen arranged at the bottom of the pretreatment box, a pretreatment pressure plate arranged above the filter screen, and an electric telescopic rod connected to the top of the pretreatment pressure plate; a removal plate is connected to the filter screen, and the top of the removal plate is mechanically connected to a ball screw, which is rotatably installed inside the removal slide rail and is connected to a motor; a collection net bucket for collecting impurities is connected to the filter screen, and a pull-out window for facilitating the removal of the collection net bucket is provided on the pretreatment box, and a sealing cover is arranged on the pull-out window.

[0009] As a preferred solution of the screw stack sludge dewatering machine of the present invention, the bottom of the pretreatment box is connected to a sludge hopper, the bottom of the sludge hopper is connected to a feed pump through a pipeline, and the feed pump is connected to the dewatering box through a pipeline.

[0010] As a preferred solution of the screw stacking sludge dewatering machine of the present invention, a collection port for use with a collection net bucket is opened in the middle of the filter screen, and a pretreatment protrusion is arranged on the pretreatment pressure plate to press the collection net bucket from the collection port.

[0011] As a preferred solution of the screw-stacked sludge dewatering machine described in the utility model, the removal plates are arranged on both sides of the collection port, the top of each group of removal plates is connected to a connecting rod, the top of the connecting rod is fixedly connected to a transmission slider, the transmission slider is mechanically connected to the ball screw, and thread structures with opposite thread rotation directions are arranged on both sides of the ball screw.

[0012] As a preferred solution of the screw-stacked sludge dewatering machine described in the utility model, a pull-out slide rail is arranged at the bottom of the filter screen plate, both sides of the aggregate net bucket are inserted into the pull-out slide rail and are horizontally slidably connected to the pull-out slide rail, and the two ends of the aggregate net bucket are respectively fitted with the inner wall of the pretreatment box and the inner wall of the sealing cover, and the sealing cover is provided with a sealing ring used in conjunction with the pull-out window.

[0013] As a preferred solution of the screw-stacked sludge dewatering machine described in the utility model, wherein: a pull-out handle is arranged on the aggregate net bucket, the pull-out handle is in a "concave" shape, and the side wall of the aggregate net bucket is provided with a hidden storage groove adapted to the pull-out handle structure, and springs are connected to both ends of the pull-out handle, and are horizontally slidably connected to the aggregate net bucket through the springs, and the outer side wall of the pull-out handle is tightly fitted with the sealing cover.

[0014] Beneficial effects of the utility model:

[0015] The utility model can effectively remove impurities in the sludge by combining the filter screen plate and the removal plate in the pretreatment unit, and can concentrate the impurities into the aggregate net bucket for collection by cooperating with the removal plate and the corresponding transmission structure, thereby simplifying the sludge pretreatment process; the aggregate net bucket is equipped with a convenient pull-out handle, which makes the removal and cleaning of the aggregate faster and more convenient, thereby improving the sewage treatment efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without inventive work. Among them:

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0018] Figure 2 This is a schematic diagram of the internal structure of the dehydration box of the present utility model.

[0019] Figure 3 This is a bottom view of the pretreatment box of the present invention.

[0020] Figure 4 This is a schematic cross-sectional structural diagram of the pretreatment box of the present utility model.

[0021] Figure 5 This is a schematic diagram of the overall structure of the pre-processing unit of the present invention.

[0022] Figure 6 This is a schematic diagram of the installation structure of the pull-out handle of the utility model.

[0023] In the figure: 100, main unit; 101, transmission shaft; 102, spiral blade; 103, motor; 104, dehydration box; 105, pretreatment box; 106, feed pump;

[0024] 200, pretreatment unit; 201, filter screen; 202, pretreatment pressure plate; 203, pull-out handle; 2031, spring; 204, electric telescopic rod; 205, removal plate; 2051, connecting rod; 2052, transmission slider; 206, ball screw; 207, removal slide rail; 208, collection net bucket; 209, motor; 210, sealing cover; 211, sludge hopper; 212, pretreatment bump. DETAILED DESCRIPTION

[0025] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below with reference to the accompanying drawings.

[0026] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0027] Secondly, the term "one embodiment" or "embodiment" herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in various places throughout this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0028] Furthermore, the present invention is described in detail with reference to schematic diagrams. For ease of illustration, when describing embodiments of the present invention, cross-sectional views of device structures may be partially enlarged and not to scale. Furthermore, the schematic diagrams are merely illustrative and should not limit the scope of protection of the present invention. Furthermore, in actual production, three-dimensional dimensions, including length, width, and depth, should be included.

[0029] Reference Figures 1 to 6 , which is the first embodiment of the present utility model, provides a spiral stacking sludge dewatering machine, including a main unit 100 and a pretreatment unit 200;

[0030] The main unit 100 includes a dehydration box 104 and a pretreatment box 105. A transmission shaft 101 is rotatably installed in the dehydration box 104, and a spiral blade 102 is arranged on the transmission shaft 101. The transmission shaft 101 is connected to a motor 103; the water inlet side of the dehydration box 104 is connected to the pretreatment box 105 through a pipeline, and the pretreatment unit 200 is arranged in the pretreatment box 105; the bottom of the pretreatment box 105 is connected to a sludge hopper 211, and the bottom of the sludge hopper 211 is connected to a feed pump 106 through a pipeline, and the feed pump 106 is connected to the dehydration box 104 through a pipeline.

[0031] The pretreatment unit 200 includes a filter screen plate 203 arranged at the bottom of the pretreatment box 105, a pretreatment pressing plate 202 arranged above the filter screen plate 203, and an electric telescopic rod 204 connected to the top of the pretreatment pressing plate 202; a material removal plate 205 is connected to the filter screen plate 203, and the material removal plates 205 are arranged on both sides of the collection port. The top of each group of material removal plates 205 is connected to a connecting rod 2051, and the top of the connecting rod 2051 is fixedly connected to a transmission slider 2052, and the transmission slider 2052 is mechanically connected to the ball screw 206. The two sides of the ball screw 206 are provided with thread structures with opposite thread rotation directions, which are respectively connected to the two sets of transmission sliders 2052 for mechanical transmission so that their movement directions are opposite; the bottom of the filter screen plate 203 is provided with a pull-out slide rail, and the two sides of the collection net bucket 208 are inserted into the pull-out slide rail and are horizontally slidably connected with the pull-out slide rail. The two ends of the collection net bucket 208 are respectively in contact with the inner wall of the pretreatment box 105 and the inner wall of the sealing cover 210. The sealing cover 210 is provided with a sealing ring used in conjunction with the pull-out window to ensure the sealing of the pull-out window to prevent sludge or liquid from leaking;

[0032] The top mechanical transmission of the material removal plate 205 is connected with a ball screw 206, which is rotatably installed inside the material removal slide rail 207, and the ball screw 206 is connected to a motor 209; the middle part of the filter screen plate 203 is provided with a collection port for use with a collection net bucket 208, and the pretreatment pressing plate 202 is provided with a pretreatment protrusion 212 that presses the collection net bucket 208 from the collection port, and the filter screen plate 203 is connected with a collection net bucket 208 for collecting impurities, and the pretreatment box 105 is provided with a convenient A pull-out window for taking out the aggregate net bucket 208 is provided with a sealing cover 210; a pull-out handle 203 is provided on the aggregate net bucket 208, and the pull-out handle 203 is in a "concave" shape. The side wall of the aggregate net bucket 208 is provided with a hidden storage groove 203 adapted to the structure of the pull-out handle 203, and springs 2031 are connected to both ends of the pull-out handle 203, and are horizontally slidably connected to the aggregate net bucket 208 through the spring 2031, and the outer wall of the pull-out handle 2013 is tightly fitted with the sealing cover 210.

[0033] In this embodiment, the sludge first enters the pretreatment box 105, where the impurities in the sludge are preliminarily filtered through the filter screen 203. The electric telescopic rod 204 drives the pretreatment pressing plate 202 to move up and down, pressing the sludge against the filter screen 203 to enhance the filtering effect. The pretreated sludge is transported to the dewatering box 104 through the pipeline and the feed pump 106. In the dewatering box 104, the motor 103 drives the spiral blade 102 to rotate through the transmission shaft 101, and the spiral blade 102 pushes the sludge along the dewatering box 104. During this process, the liquid in the sludge is squeezed out by the centrifugal force and the action of the spiral blade 102, thereby achieving the dehydration effect. (This is a direct reference to the existing mature technology, and its specific structure and working principle are not described here.)

[0034] After all the sludge is filtered, start the motor 209 so that the motor 209 drives the ball screw 206 to rotate. The ball screw 206 is connected to the transmission slider 2052 through mechanical transmission, so that it drives the two sets of removal plates 205 to approach each other, and then pushes the impurities remaining on the surface of the filter plate 201 to the collection port. The impurities are concentrated in the collection net bucket 208 under the action of gravity. Later, the operator opens the sealing cover 210, so that the pulling handle 203 on the collection net bucket 208 pops out under the action of the spring 2031. The operator can easily take out the collection net bucket 208 by pulling the handle 203, and then clean the impurities in the collection net bucket 208.

[0035] It is worth noting that the entire device is controlled by a controller. Since the controller is a commonly used device and belongs to existing mature technology, its electrical connection relationship and specific circuit structure will not be described in detail here.

[0036] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, and all of these should be included in the scope of the claims of the present invention.

Claims

1. A screw stack sludge dewatering machine, characterized by: It comprises a main unit (100) and a pre-processing unit (200); The main unit (100) comprises a dehydration box (104) and a pretreatment box (105); a transmission shaft (101) is rotatably installed in the dehydration box (104); a spiral blade (102) is arranged on the transmission shaft (101); and the transmission shaft (101) is connected to a motor (103); the water inlet side of the dehydration box (104) is connected to the pretreatment box (105) through a pipeline, and the pretreatment unit (200) is arranged in the pretreatment box (105); The pretreatment unit (200) comprises a pretreatment box (105) having a filter screen (201) arranged at the bottom thereof, a pretreatment pressing plate (202) arranged above the filter screen (201), and an electric telescopic rod (204) connected to the top of the pretreatment pressing plate (202); a material removal plate (205) connected to the filter screen (201), and a ball screw (206) mechanically connected to the top of the material removal plate (205), the ball screw (206) being rotatably mounted inside a material removal slide rail (207), and the ball screw (206) being connected to a motor (209); a material collecting net bucket (208) for collecting impurities being connected to the filter screen (201), and a pull-out window for facilitating the removal of the material collecting net bucket (208) being provided on the pretreatment box (105), and a sealing cover (210) being arranged on the pull-out window.

2. The screw-type sludge dewatering machine according to claim 1, characterized in that: The bottom of the pretreatment box (105) is connected to a sludge hopper (211), the bottom of the sludge hopper (211) is connected to a feed pump (106) through a pipeline, and the feed pump (106) is connected to the dehydration box (104) through a pipeline.

3. The screw stack sludge dewatering machine according to claim 1, characterized in that: A material collection opening for use with a material collection net bucket (208) is provided in the middle of the filter screen plate (201), and a pretreatment protrusion (212) is arranged on the pretreatment pressing plate (202) for pressing the material collection net bucket (208) from the material collection opening.

4. The screw stack sludge dewatering machine according to claim 1, characterized in that: The removal plates (205) are arranged on both sides of the material collection port, and the top of each group of removal plates (205) is connected to a connecting rod (2051), and the top of the connecting rod (2051) is fixedly connected to a transmission slider (2052), and the transmission slider (2052) is mechanically connected to the ball screw (206), and thread structures with opposite thread rotation directions are arranged on both sides of the ball screw (206).

5. The screw stack sludge dewatering machine according to claim 1, characterized in that: A pull-out slide rail is arranged at the bottom of the filter screen plate (201), and both sides of the collecting net bucket (208) are inserted into the pull-out slide rail and are horizontally slidably connected to the pull-out slide rail. The two ends of the collecting net bucket (208) are respectively fitted with the inner wall of the pretreatment box (105) and the inner wall of the sealing cover (210), and the sealing cover (210) is provided with a sealing ring used in conjunction with the pull-out window.

6. The screw stack sludge dewatering machine according to claim 1, characterized in that: The collecting net bucket (208) is provided with a pull-out handle (203), which is in a "concave" shape. The side wall of the collecting net bucket (208) is provided with a hidden storage groove (2081) adapted to the structure of the pull-out handle (203). Both ends of the pull-out handle (203) are connected to springs (2031) and are horizontally slidably connected to the collecting net bucket (208) through the springs (2031). The outer wall of the pull-out handle (203) is tightly fitted with the sealing cover (210).

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