CN117699287A - Pre-sewage draining device for compressed garbage truck and compressed garbage truck - Google Patents

Abstract

The invention relates to a pre-sewage draining device for a compressed garbage truck, which comprises: the sewage treatment device comprises a sewage tank, a liquid level sensor, a sewage pumping pump, a sewage outlet pipe and a sewage guide mechanism, wherein the liquid level sensor is arranged on the sewage tank, the sewage pumping pump is communicated with the sewage tank, and a camera is arranged at the water outlet end of the sewage outlet pipe; the sewage guide mechanism comprises a lifting module, a first rotating module and a second rotating module, wherein the lifting module is used for driving the first rotating module, the second rotating module and the sewage outlet pipe to lift, and the first rotating module is used for driving the second rotating module to rotate with the sewage outlet pipe. Compared with the prior art, the invention can lead the sewage to be accurately guided to the sewer, and the sewage flowing out of the sewage outlet pipe is accurately discharged to the sewer, so that the vehicle tires and the road surface are not polluted, and the vehicle tires and the road surface are not required to be cleaned when the vehicle is driven.

Description

Pre-drainage sewage device for compressed garbage trucks and compressed garbage trucks

Technical field

The invention relates to the technical field of sewage discharge from compressed garbage trucks, and in particular to a pre-discharge device for sewage discharge from compressed garbage trucks and a compressed garbage truck.

Background technique

With the standardization of urban garbage transfer management, fully sealed compression garbage trucks have been widely used. By compressing the garbage and collecting the sewage during the compression process into the sewage tank, it effectively and completely solves the secondary pollution during the garbage transfer process. question.

You can also find more information related to the above technical solutions in the following documents:

Aiming at the inconvenience and poor experience of mainstream compressed garbage trucks using manual valve opening to discharge sewage, existing technologies such as the patent publication number CN209622680U disclose an intelligent one-button electric sewage discharge device for compressed garbage trucks that does not require downloading. Sewage can be discharged from the car, improving the convenience and experience of operation.

In the process of realizing the present invention, the inventor found that there are the following problems in the prior art:

The existing technology realizes drainage by opening and closing a ball valve with an electromagnetic push rod. The discharged sewage cannot be accurately guided to the sewer. The sewage flowing out of the sewage outlet pipe is prone to partially remaining on the vehicle tires and road surface, causing secondary pollution.

Contents of the invention

For this reason, it is necessary to provide a pre-discharge sewage device and a compressed garbage truck for compressed garbage trucks to solve the problem that the sewage discharged by the existing technology cannot be accurately guided to the sewer, and the sewage flowing out of the sewage outlet pipe is prone to partially remaining in the vehicle. There are technical problems of secondary pollution on tires and roads.

In order to achieve the above object, in the first aspect, the inventor provides a pre-discharge sewage device for compressed garbage trucks, including:

A sewage tank, the sewage tank is used to contain sewage;

A liquid level sensor, the liquid level sensor is arranged on the sewage tank and is used to detect the height of sewage in the sewage tank;

A sewage pump, the sewage pump is connected to the sewage tank, and the liquid level sensor is connected to and controls the sewage pump;

A sewage outlet pipe, the sewage pump is connected to the sewage outlet pipe through a pipeline, and a camera is provided on the outlet end of the sewage outlet pipe; and

The pollution guide mechanism includes a lifting module, a first rotating module and a second rotating module. The lifting module is arranged on the sewage tank, and the first rotating module is arranged on the lifting module. The second rotating module is arranged on the first rotating module, the sewage outlet pipe is arranged on the second rotating module, and the lifting module is used to drive the first rotating module and the second rotating module. , the sewage outlet pipe is lifted and lowered, the first rotating module is used to drive the second rotating module and the sewage outlet pipe to rotate, and the second rotating module is used to drive the sewage outlet pipe to rotate.

Different from the existing technology, the above technical solution monitors the sewage height in the sewage tank in real time through the liquid level sensor. When the sewage height in the sewage tank exceeds the preset value, the sewage needs to be discharged. At this time, the operation room receives an alarm and needs to find a source for discharge. For sewage sewers, the driver drives the garbage truck to the sewer, checks the content captured by the camera, controls the rotation of the first rotating module and the second rotating module, aligns the outlet end of the sewage outlet pipe with the inlet hole of the sewer, and then starts The lifting module lowers the outlet of the sewage outlet pipe to above the inlet hole of the sewer, aligns the outlet end of the sewage outlet pipe with the inlet hole of the sewer, and turns on the sewage pump to discharge the sewage in the sewage tank into the sewer until it is discharged. After finishing the sewage, reset the lifting module, the first rotating module and the second rotating module; in this way, the discharged sewage can be accurately guided to the sewer, and the sewage flowing out of the sewage outlet pipe can be accurately discharged into the sewer without polluting vehicle tires and road surfaces. No need to get out of your car to clean your vehicle's tires and road surface.

As an embodiment of the present invention, the lifting module includes a lifting rail, a lifting platform and a lifting drive unit. The lifting rail is located on one side of the sewage tank, and the lifting platform is disposed on the lifting rail. The lifting drive unit is used to drive the lifting platform to slide up and down along the lifting track.

In this way, by driving the lifting platform through the lifting drive unit, the first rotating module, the second rotating module and the sewage outlet pipe can be driven to move up and down, thereby conveniently controlling the sewage outlet pipe to be inserted into the water inlet of the sewer.

As an embodiment of the present invention, the first rotation module includes a first rotation drive unit and a first beam. The first rotation drive unit is provided on the lifting platform. One end of the first beam passes through The first rotation drive unit is connected to the lifting platform. The first rotation drive unit is used to drive the first cross beam to rotate in the horizontal direction. The second rotation module is provided at the other end of the first cross beam. .

In this way, the first rotary drive unit can drive the first cross beam, the second rotary module and the sewage outlet pipe to rotate around the first rotary drive unit, which facilitates the first stage of adjusting the position of the sewage outlet pipe in the horizontal direction.

As an embodiment of the present invention, the second rotation module includes a second rotation drive unit and a second cross beam. The second rotation drive unit is disposed on the first cross beam. One end of the second cross beam passes through The second rotary drive unit is connected to the first cross beam, and is used to drive the second beam to rotate in a horizontal direction. The sewage outlet pipe is provided at the other end of the second cross beam.

In this way, the second cross beam and the sewage outlet pipe are driven by the second rotation drive unit to rotate around the second rotation drive unit, which facilitates further detailed adjustment of the position of the sewage outlet pipe in the horizontal direction, and ultimately facilitates the insertion of the sewage outlet pipe into the inlet of the sewer. hole.

As an embodiment of the present invention, the sewage outlet pipe is arranged in a vertical direction, and the camera is arranged at the bottom of the sewage outlet pipe.

In this way, the camera is installed at the bottom of the sewage outlet pipe through the base, which facilitates the production and installation of the sewage outlet pipe. It is convenient for the camera to capture the position of the bottom of the sewage outlet pipe in real time, and it is convenient to adjust the bottom position of the sewage outlet pipe and improve the sewage outlet. Adjustment accuracy of water pipes.

As an embodiment of the present invention, the pre-drainage sewage installation also includes a control module, and the camera, lifting drive unit, first rotation drive unit, and second rotation drive unit are electrically connected to the control module respectively, and the The control module controls the lifting drive unit, the first rotation drive unit, and the second rotation drive unit according to the information captured by the camera.

In this way, through the cooperation of the control module with the camera, the lifting drive unit, the first rotation drive unit, and the second rotation drive unit, the position of the outlet end of the sewage outlet pipe can be adjusted in real time.

As an embodiment of the present invention, the liquid level sensor and the sewage pump are electrically connected to the control module respectively. The control module controls the sewage pumping based on the liquid level information sent by the liquid level sensor. Pump.

In this way, through the cooperation of the control module, the liquid level sensor and the sewage pump, firstly, the operator can be reminded that even if the sewage tank is drained, secondly, after the outlet end of the sewage outlet pipe is adjusted to the preset height above the sewage tank, the operator can be immediately Drain the sewage from the sewage tank.

As an embodiment of the present invention, the sewage pump is connected to the sewage outlet pipe through a hose.

In this way, the sewage pump passes through the hose and the sewage outlet pipe, and the hose can easily move up and down following the first rotary drive unit, the second rotary drive unit, and the sewage outlet pipe.

As an embodiment of the present invention, the pre-drainage sewage device further includes a conduit mechanism, which is disposed above the sewage guide mechanism and used to guide the hose.

In this way, the hose can be easily guided through the conduit mechanism to avoid random entanglement of the hose, causing accidents.

In order to achieve the above object, in the second aspect, the inventor provides a compressed garbage truck, including the pre-drainage device for compressed garbage trucks as described in any one of the above claims.

Different from the existing technology, the compressed garbage truck of the technical solution of this application can accurately guide the discharged sewage to the sewer, and the sewage flowing out of the sewage outlet pipe can be accurately discharged into the sewer without contaminating vehicle tires and road surfaces, and there is no need to get off the vehicle to clean it. Vehicle tires and road surfaces.

The relevant descriptions of the above invention content are only an overview of the technical solutions of the present application. In order to allow those of ordinary skill in the art to understand the technical solutions of the present application more clearly, and then implement them based on the contents recorded in the text of the description and the drawings, and in order to allow The above objects and other objects, features and advantages of the present application can be more easily understood and will be described below in conjunction with the specific embodiments and drawings of the present application.

Description of the drawings

The drawings are only used to illustrate the principles, implementation methods, applications, features, effects, etc. of the specific embodiments of the present application and other related contents, and cannot be considered as limitations of the present application.

In the drawings attached to the manual:

Figure 1 is a schematic structural diagram of a pre-drainage device for compressed garbage trucks according to one embodiment of the present application;

Figure 2 is a schematic structural diagram of a compressed garbage truck according to an embodiment of the present application;

Figure 3 is a partial enlarged view of a pre-drainage sewage device according to an embodiment of the present application;

Figure 4 is a schematic structural diagram of a control module according to an embodiment of the present application;

Figure 5 is a schematic circuit diagram of a pre-drainage device for compressed garbage trucks according to an embodiment of the present application.

The reference symbols involved in the above drawings are explained as follows:

1. Sewage tank,

2. Liquid level sensor,

3. Sewage pump, 31. Hose, 32. Conduit mechanism,

4. Sewage outlet pipe,

51. Lifting module, 511. Lifting track, 512. Lifting platform, 513. Lifting drive unit, 52. First rotation module, 521. First rotation drive unit, 522. First beam, 53. Second rotation module, 531 , the second rotation drive unit, 532. the second beam,

6. Camera,

7. Control module,

8. Sewer, 81. Water inlet.

Detailed ways

In order to describe in detail the possible application scenarios, technical principles, specific solutions that can be implemented, the objectives and effects that can be achieved, etc. of this application, the following is a detailed description with reference to the listed specific embodiments and the accompanying drawings. The embodiments described herein are only used to illustrate the technical solution of the present application more clearly, and are therefore only used as examples and cannot be used to limit the scope of protection of the present application.

Reference herein to "an embodiment" means that a particular feature, structure or characteristic described in connection with the embodiment can be included in at least one embodiment of the present application. The word "embodiment" appearing in various places in the specification does not necessarily refer to the same embodiment, nor does it specifically limit its independence or correlation with other embodiments. In principle, in this application, as long as there is no technical contradiction or conflict, the technical features mentioned in each embodiment can be combined in any way to form a corresponding implementable technical solution.

Unless otherwise defined, the technical terms used in this article have the same meanings as commonly understood by those skilled in the technical field to which this application belongs; the use of relevant terms in this article is only to describe specific embodiments and is not intended to limit this application. .

In the description of this application, the term "and/or" is an expression used to describe the logical relationship between objects, indicating that there can be three relationships, such as A and/or B, indicating: A exists, B exists, and There are three situations A and B at the same time. In addition, the character "/" in this article generally indicates that the related objects are an "or" logical relationship.

In this application, terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation and do not necessarily require or imply that there exists a relationship between these entities or operations. Any actual quantity, priority or sequence relationship.

Without further limitation, in this application, the terms “includes,” “includes,” “has,” or other similar expressions used in the statements are intended to cover non-exclusive inclusion, and these expressions do not exclude Additional elements may also be present in a process, method, or product that includes stated elements, such that a process, method, or product that includes a list of elements may include not only those defined elements, but also other elements not expressly listed. , or also includes elements inherent to the process, method or product.

The same understanding as in the "Examination Guidelines", in this application, expressions such as "greater than", "less than" and "exceeding" are understood to exclude the number; expressions such as "above", "below" and "within" are understood to include Original number. In addition, in the description of the embodiments of this application, the meaning of "multiple" is two or more (including two), and similar expressions related to "multiple" are also understood in this way, such as "multiple groups", "multiple groups" "Multiple times" etc., unless otherwise expressly and specifically limited.

In the description of the embodiments of this application, space-related expressions are used, such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "back" "Left", "right", "vertical", "horizontal", "vertical", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., so The indicated orientation or positional relationship is based on the specific embodiment or the orientation or positional relationship shown in the drawings. It is only to facilitate the description of the specific embodiment of the present application or to facilitate the reader's understanding. It does not indicate or imply that the device or component indicated must be Having a specific location, a specific orientation, or being constructed or operated in a specific orientation should not be construed as limiting the embodiments of the present application.

Unless otherwise explicitly stipulated or limited, in the description of the embodiments of this application, terms such as "installation," "connection," "connection," "fixing," and "setting" should be understood in a broad sense. For example, the "connection" can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection, or it can be a communication connection. Indirect connection through an intermediary; it can be an internal connection between two elements or an interactive relationship between two elements. For those skilled in the technical field to which this application belongs, the specific meanings of the above terms in the embodiments of this application can be understood according to specific circumstances.

The existing technology realizes drainage by opening and closing a ball valve with an electromagnetic push rod. The discharged sewage cannot be accurately guided to the sewer. The sewage flowing out of the sewage outlet pipe is prone to partially remaining on the vehicle tires and road surface, causing secondary pollution.

The pre-discharge device for sewage for compressed garbage trucks and the compressed garbage truck involved in this embodiment can be used in various scenarios of sewage discharge by compressed garbage trucks.

According to some embodiments of the present application, please refer to Figures 1 to 5. This embodiment relates to a pre-drainage sewage device for compressed garbage trucks, including a sewage tank 1, a liquid level sensor 2, a sewage pump 3, and a sewage outlet. The water pipe 4 and the sewage guiding mechanism, the sewage tank 1 are used to accommodate sewage; the liquid level sensor 2 is set on the sewage tank 1 and is used to detect the height of the sewage in the sewage tank 1; the sewage pump 3 is connected with the sewage tank 1, The liquid level sensor 2 is connected to and controls the sewage pump 3; the sewage pump 3 is connected to the sewage outlet pipe 4 through a pipeline, and a camera 6 is provided on the outlet end of the sewage outlet pipe 4;

The sewage guiding mechanism includes a lifting module 51, a first rotating module 52 and a second rotating module 53. The lifting module 51 is arranged on the sewage tank 1, the first rotating module 52 is arranged on the lifting module 51, and the second rotating module 53 is arranged on the sewage tank 1. On a rotating module 52, the sewage outlet pipe 4 is set on the second rotating module 53. The lifting module 51 is used to drive the first rotating module 52, the second rotating module 53, and the sewage outlet pipe 4 to lift. The first rotating module 52 is used to lift the sewage outlet pipe 4. In order to drive the second rotating module 53 and the sewage outlet pipe 4 to rotate, the second rotating module 53 is used to drive the sewage outlet pipe 4 to rotate.

In this embodiment, the liquid level sensor 2 is located directly above the sewage tank 1. When the sewage in the sewage tank 1 reaches two-thirds of the height, an alarm needs to be issued to prevent the sewage tank 1 from overflowing.

The liquid level sensor 2 monitors the sewage height in the sewage tank 1 in real time. When the sewage height in the sewage tank 1 exceeds the preset value, the sewage needs to be discharged. At this time, the operation room receives an alarm and needs to find a sewer 8 that can discharge sewage. The driver The personnel drives the garbage truck to the sewer 8, checks the content captured by the camera 6, controls the rotation of the first rotation module 52 and the second rotation module 53, and aligns the outlet end of the sewage outlet pipe 4 with the water inlet 81 of the sewer 8. Restart the lifting module 51 to lower the outlet of the sewage outlet pipe 4 to above the water inlet hole 81 of the sewer 8. Align the outlet end of the sewage outlet pipe 4 with the water inlet 81 of the sewer 8. Turn on the sewage pump 3 to lift the sewage tank. The sewage in 1 is discharged into the sewer 8. Until the sewage is discharged, the lifting module 51, the first rotating module 52 and the second rotating module 53 are reset; in this way, the discharged sewage can be accurately guided to the sewer 8, and the sewage outlet pipe 4. The outflowing sewage is accurately discharged into the sewer 8. It will not pollute the vehicle tires and road surface, and there is no need to get off the vehicle to clean the vehicle tires and road surface.

According to some embodiments of the present application, optionally, the lifting module 51 includes a lifting rail 511, a lifting platform 512 and a lifting drive unit 513. The lifting rail 511 is located on one side of the sewage tank 1, and the lifting platform 512 is provided on the lifting rail 511. The lifting driving unit 513 is used to drive the lifting platform 512 to slide up and down along the lifting track 511 .

In this way, by driving the lifting platform 512 through the lifting driving unit 513, the first rotating module 52, the second rotating module 53 and the sewage outlet pipe 4 can be driven to move up and down, thereby conveniently controlling the sewage outlet pipe 4 to be inserted into the water inlet 81 of the sewer 8.

According to some embodiments of the present application, optionally, the first rotation module 52 includes a first rotation drive unit 521 and a first beam 522. The first rotation drive unit 521 is disposed on the lifting platform 512, and one end of the first beam 522 passes through The first rotation drive unit 521 is connected to the lifting platform 512 . The first rotation drive unit 521 is used to drive the first cross beam 522 to rotate in the horizontal direction. The second rotation module 53 is provided at the other end of the first cross beam 522 .

In this way, the first rotary drive unit 521 can drive the first cross beam 522, the second rotary module 53, and the sewage outlet pipe 4 to rotate around the first rotary drive unit 521, which facilitates the adjustment of the sewage outlet pipe 4 in the horizontal direction in the first stage. Location.

According to some embodiments of the present application, optionally, the second rotation module 53 includes a second rotation drive unit 531 and a second beam 532. The second rotation drive unit 531 is disposed on the first beam 522, and one end of the second beam 532 The second rotary drive unit 531 is connected to the first cross beam 522 . The second rotary drive unit 531 is used to drive the second beam to rotate in the horizontal direction. The sewage outlet pipe 4 is provided at the other end of the second cross beam 532 .

The length of the first beam 522 must be longer than the length of the second beam 532 so that the second beam 532 can further adjust the position of the sewage outlet pipe 4 .

In this way, the second cross beam 532 and the sewage outlet pipe 4 are driven by the second rotation drive unit 531 to rotate around the second rotation drive unit 531, which facilitates further detailed adjustment of the position of the sewage outlet pipe 4 in the horizontal direction, and ultimately facilitates the adjustment of the sewage outlet pipe. 4 is inserted into the water inlet 81 of the sewer 8.

According to some embodiments of the present application, optionally, the sewage outlet pipe 4 is arranged in a vertical direction, and the camera 6 is arranged at the bottom of the sewage outlet pipe 4 .

In this way, the camera 6 is installed at the bottom of the sewage outlet pipe 4 through the base, which facilitates the production and installation of the sewage outlet pipe 4. It is convenient for the camera 6 to capture the position of the bottom of the sewage outlet pipe 4 in real time, and to facilitate the inspection of the bottom position of the sewage outlet pipe 4. Make adjustments to improve the adjustment accuracy of the sewage outlet pipe 4.

According to some embodiments of the present application, optionally, the pre-drainage sewage installation also includes a control module 7. The camera 6, the lifting drive unit 513, the first rotation drive unit 521, and the second rotation drive unit 531 are respectively electrically connected to the control module 7. , the control module 7 controls the lifting drive unit 513, the first rotation drive unit 521, and the second rotation drive unit 531 based on the information captured by the camera 6.

In this way, through the cooperation of the control module 7 with the camera 6, the lifting drive unit 513, the first rotation drive unit 521, and the second rotation drive unit 531, the position of the outlet end of the sewage outlet pipe 4 can be adjusted in real time.

According to some embodiments of the present application, optionally, the liquid level sensor 2 and the sewage pump 3 are electrically connected to the control module 7 respectively. The control module 7 controls the sewage pump 3 according to the liquid level information sent by the liquid level sensor 2 .

In this way, through the cooperation of the control module 7 with the liquid level sensor 2 and the sewage pump 3, firstly, the operator can be reminded that even if the sewage tank 1 is drained, secondly, the outlet end of the sewage outlet pipe 4 can be adjusted to be above the sewage tank 1 After the height is preset, the sewage in the sewage tank 1 is discharged in time.

According to some embodiments of the present application, optionally, the sewage pump 3 is connected to the sewage outlet pipe 4 through the hose 31 .

In this way, the sewage pump 3 passes through the hose 31 and the sewage outlet pipe 4, and the hose 31 can easily move up and down following the first rotary drive unit 521, the second rotary drive unit 531, and the sewage outlet pipe 4.

According to some embodiments of the present application, optionally, the pre-drainage sewage device also includes a conduit mechanism 32. The conduit mechanism 32 is disposed above the sewage guide mechanism and is used to guide the hose 31.

In this way, the hose 31 can be easily guided through the conduit mechanism 32 to prevent the hose 31 from being tangled randomly and causing accidents.

In this embodiment, as shown in Figure 4, in the cab of the compressed garbage truck, a display screen displays the picture captured by the camera 6; F1 controls the first rotation drive unit 521 to drive the first beam 522 to rotate, and F2 controls the second The rotation drive unit 531 drives the second beam 532 to rotate; a UD (Up and Down) is also provided to control the lift drive unit 513 to drive the rise and fall of the sewage outlet pipe 4.

As shown in Figure 5, the liquid level sensor 2 and the camera 6 are electrically connected to the control module 7 respectively. The control module 7 is connected to and controls the lifting drive unit 513, the first rotation drive unit 521, the second rotation drive unit 531, and the sewage pump 3. , in this embodiment, manual control of the lifting drive unit 513, the first rotation drive unit 521, the second rotation drive unit 531, and the sewage pump 3 is mainly used. The subsequent use of AI to calculate the water inlet 81 of the sewer 8 is not excluded. position, thereby making it possible to intelligently control the lifting drive unit 513, the first rotation drive unit 521, the second rotation drive unit 531, and the sewage pump 3.

As shown in Figure 2, in this embodiment, a compressed garbage truck is also provided, including the above-mentioned pre-discharge sewage device. The sewage tank 1 is located at the bottom of the compressed garbage truck. The pre-discharge sewage device can be located behind the bottom of the compressed garbage truck. The pre-discharge device can also be set on one side of the bottom of the compressed garbage truck. As long as it does not interfere with the normal operation of the compressed garbage truck, it will Within the protection scope of this embodiment. It can be adjusted according to the actual situation.

Different from the existing technology, the compressed garbage truck of the technical solution of the present application can accurately guide the discharged sewage to the sewer 8, and the sewage flowing out of the sewage outlet pipe 4 can be accurately discharged into the sewer 8 without contaminating vehicle tires and road surfaces, without the need for Get out of the vehicle and clean the vehicle tires and road surface.

In this embodiment, the power mechanism or power unit includes but is not limited to engines, motors, pneumatic tools, hydraulic pumps, etc. The power unit also includes direct power source and indirect power source. The direct power source can provide power by itself, such as engine, motor, etc., and the indirect power source includes cylinder, hydraulic cylinder, etc. The power mechanism or power unit can drive the linear reciprocating motion of the execution unit through the cooperation of the gear rack, the slide block and the chute, the screw and the nut, and so on.

It should be noted that although the above-mentioned embodiments have been described herein, this does not limit the scope of patent protection of the present invention. Therefore, based on the innovative concept of the present invention, changes and modifications to the embodiments described herein, or equivalent structures or equivalent process transformations using the contents of the description and drawings of the present invention, directly or indirectly apply the above technical solutions Other related technical fields are included in the patent protection scope of the present invention.

Claims (10)

1. A pre-discharge sewage device for compressed garbage trucks, which is characterized in that it includes: A sewage tank, the sewage tank is used to contain sewage; A liquid level sensor, the liquid level sensor is arranged on the sewage tank and is used to detect the height of sewage in the sewage tank; A sewage pump, the sewage pump is connected to the sewage tank, and the liquid level sensor is connected to and controls the sewage pump; A sewage outlet pipe, the sewage pump is connected to the sewage outlet pipe through a pipeline, and a camera is provided on the outlet end of the sewage outlet pipe; and The pollution guide mechanism includes a lifting module, a first rotating module and a second rotating module. The lifting module is arranged on the sewage tank, and the first rotating module is arranged on the lifting module. The second rotating module is arranged on the first rotating module, the sewage outlet pipe is arranged on the second rotating module, and the lifting module is used to drive the first rotating module and the second rotating module. , the sewage outlet pipe is lifted and lowered, the first rotating module is used to drive the second rotating module and the sewage outlet pipe to rotate, and the second rotating module is used to drive the sewage outlet pipe to rotate. 2. The pre-drainage sewage device for compressed garbage trucks according to claim 1, characterized in that the lifting module includes a lifting track, a lifting platform and a lifting drive unit, and the lifting track is located on a side of the sewage tank. On one side, the lifting platform is arranged on the lifting rail, and the lifting driving unit is used to drive the lifting platform to slide up and down along the lifting rail. 3. The pre-drainage device for compressed garbage trucks according to claim 2, wherein the first rotation module includes a first rotation drive unit and a first cross beam, and the first rotation drive unit is disposed on On the lifting platform, one end of the first beam is connected to the lifting platform through the first rotation drive unit, and the first rotation drive unit is used to drive the first beam to rotate in the horizontal direction, so The second rotating module is arranged at the other end of the first cross beam. 4. The pre-drainage device for compressed garbage trucks according to claim 3, wherein the second rotation module includes a second rotation drive unit and a second cross beam, and the second rotation drive unit is disposed on On the first beam, one end of the second beam is connected to the first beam through the second rotation drive unit, and the second rotation drive unit is used to drive the second beam to rotate in the horizontal direction, so The sewage outlet pipe is provided at the other end of the second beam. 5. The pre-discharge sewage device for compressed garbage trucks according to claim 4, characterized in that the sewage outlet pipe is arranged in a vertical direction, and the camera is arranged at the bottom of the sewage outlet pipe. 6. The pre-drainage device for compressed garbage trucks according to claim 5, characterized in that the pre-drainage device further includes a control module, the camera, the lifting drive unit, the first rotation drive unit, the third The two rotation drive units are electrically connected to the control module respectively. The control module controls the lifting drive unit, the first rotation drive unit and the second rotation drive unit according to the information captured by the camera. 7. The pre-drainage device for compressed garbage trucks according to claim 6, characterized in that the liquid level sensor and the sewage pump are electrically connected to the control module respectively, and the control module is configured according to the The liquid level information sent by the liquid level sensor controls the sewage pump. 8. The pre-drainage device for compressed garbage trucks according to claim 1, wherein the sewage pump is connected to the sewage outlet pipe through a hose. 9. The pre-drainage sewage device for compressed garbage trucks according to claim 8, characterized in that the pre-drainage sewage device further includes a conduit mechanism, the conduit mechanism is arranged above the sewage guide mechanism and is used to Guide the hose. 10. A compressed garbage truck, characterized by comprising: the pre-drainage device for compressed garbage trucks as claimed in any one of claims 1 to 9.