A vehicle urea filling system

Abstract

The invention discloses a vehicle urea filling system, comprising a raw material storage tank and a multi-head filling machine, a high-level tank and a low-level tank arranged from top to bottom, wherein the raw material storage tank is connected to the high-level tank through a first pipeline, the middle part of the first pipeline is connected to the low-level tank through a second pipeline, a suction pump located at the front end of a liquid inlet of the second pipeline is arranged on the first pipeline, the high-level tank is connected to the liquid inlet of the multi-head filling machine through a third pipeline, the low-level tank is connected to the liquid inlet of the multi-head filling machine through a fourth pipeline, and first regulating valves are arranged on the third pipeline and the fourth pipeline; compared with the prior art, the invention can meet the requirements of efficient and safe filling of PE bottles of different sizes, and has a high degree of automation.

Description

Technical Field

[0001] The invention relates to the technical field of filling, and in particular to a vehicle urea filling system. Background Art

[0002] In order for heavy trucks, buses and other diesel vehicles to meet the National IV emission standards, they must use a suitable SCR system for exhaust gas treatment, and this system must use urea solution to treat nitrogen oxides in the exhaust gas. Therefore, automotive urea solution has become a must-have product for heavy trucks and buses to meet the National IV emission standards.

[0003] Automotive urea is a urea aqueous solution with a concentration of 32.5% and ultrapure water as the solvent. Many small factories adopt manual filling of automotive urea due to their small output. During the filling process, PE pots of different sizes are used to fill the liquid. Because the filling barrels of automotive urea are fixed in position, the filling speed is just right for small-volume PE pots, but too slow for large-volume PE pots, affecting the filling efficiency. Summary of the invention

[0004] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a vehicle urea filling system to solve the problem in the prior art that when filling PE bottles of different volumes, the filling speed is not suitable and the filling efficiency is affected.

[0005] To achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a vehicle urea filling system, comprising a raw material storage tank and a multi-head filling machine, a high-level tank and a low-level tank arranged from top to bottom, wherein the raw material storage tank is connected to the high-level tank through a first pipeline, the middle part of the first pipeline is connected to the low-level tank through a second pipeline, a suction pump located at the front end of the liquid inlet of the second pipeline is arranged on the first pipeline, the high-level tank is connected to the liquid inlet of the multi-head filling machine through a third pipeline, the low-level tank is connected to the liquid inlet of the multi-head filling machine through a fourth pipeline, and the third pipeline and the fourth pipeline are both provided with a first regulating valve.

[0006] Compared with the prior art, the present invention has the following beneficial effects:

[0007] 1. This vehicle urea filling system forms pressure delivery through a suction pump and realizes automatic filling of vehicle urea, which improves the filling efficiency of vehicle urea and reduces the workload of staff;

[0008] 2. When filling a small-volume PE pot, close the first regulating valve on the third pipeline, connect the first regulating valve on the fourth pipeline, and feed the material into the multi-head filling machine through the low-level tank to avoid the multi-head filling machine from filling too quickly, so that the filling can be carried out safely and stably; when filling a large-volume PE pot, close the first regulating valve on the fourth pipeline, connect the first regulating valve on the third pipeline, and feed the material into the multi-head filling machine through the high-level tank. By increasing the position height, the pressure of automotive urea entering the multi-head filling machine is increased to increase the filling speed and improve the filling efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 is a process flow chart of the present invention;

[0010] Figure 2 It is a schematic diagram of the structure of the filter in the present invention;

[0011] Figure 3 for Figure 2 Enlarged view of part A in the middle;

[0012] Figure 4 for Figure 2 Enlarged view of part B in the middle. DETAILED DESCRIPTION

[0013] The present invention is further described in detail below through specific embodiments:

[0014] The figure marks in the drawings of the specification include: housing 1, filter cartridge 2, backwash liquid inlet pipe 3, backwash liquid outlet pipe 4, rotating shaft 5, telescopic rod 6, support block 7, cleaning brush 8, mounting groove 9, elastic telescopic sleeve 10, traction rope 11, guide wheel 12, transmission shaft 13, driving handle 14, locking rod 15, locking ring 16, positioning column 17, annular support sealing ring 18, liquid inlet pipe 19, liquid outlet pipe 20, liquid guide hole 21, outer cylinder 101, inner rod 102, connecting block 103, supporting spring 104, raw material storage tank 22, multi-head filling machine 23, high-level tank 24, low-level tank 25, first pipeline 26, second pipeline 27, suction pump 28, third pipeline 29, fourth pipeline 30, first regulating valve 31, liquid distributor 32, fifth pipeline 33, second regulating valve 34, third control valve 35, fourth control valve 36, filter 37.

[0015] Example

[0016] refer to Figure 1 to Figure 4As shown: a vehicle urea filling system, a raw material storage tank 22 and a multi-head filling machine 23, a high-level tank 24 and a low-level tank 25 arranged from top to bottom. In this embodiment, the multi-head filling machine 23 can be an 8-16-head filling machine, and a 12-head filling machine is generally used. The low-level tank 25 is located about one meter above the multi-head filling machine 23, and the high-level tank 24 is located about five meters above the multi-head filling machine 23; a first pipeline 26 is provided between the raw material storage tank 22 and the high-level tank 24, and the middle part of the first pipeline 26 is connected to the low-level tank 25 through a second pipeline 27. A suction pump 28 located at the front end of the liquid inlet of the second pipeline 27 is provided on the first pipeline 26, the high-level tank 24 is connected to the liquid inlet of the multi-head filling machine 23 through a third pipeline 29, and the low-level tank 25 is connected to the liquid inlet of the multi-head filling machine 23 through a fourth pipeline 30, and the third pipeline 29 and the fourth pipeline 30 are both provided with a first regulating valve 31.

[0017] In order to evenly distribute the automotive urea in the high-level tank 24 and the low-level tank 25 into the multi-head filling machine 23, the system further includes a liquid distributor 32, which is arranged on the third pipeline 29 and located at the rear end of the liquid outlet of the first regulating valve 31 on the third pipeline 29. The bottom of the liquid distributor 32 is connected to the multiple liquid inlets of the multi-head filling machine 23 one by one through multiple connecting pipes arranged in parallel. The liquid outlet of the liquid distributor 32 is connected to the middle of the fourth pipeline 30 via a fifth pipeline 33. The connecting point between the fifth pipeline 33 and the fourth pipeline 30 is located at the rear end of the liquid outlet of the first regulating valve 31 on the fourth pipeline 30. The fifth pipeline 33 is provided with a second regulating valve 34. When the high-level tank 24 or the low-level tank 25 feeds liquid into the multi-head filling machine 23, the liquid is evenly distributed through the liquid distributor 32. The connection between the liquid distributor 32 and the multi-head filling machine 23 allows the automotive urea to be evenly distributed to each independent bin in the multi-head filling machine 23 for filling. A third control valve 35 is provided on the first pipeline 26 and is located between the second pipeline 27 and the high-level tank 24. A fourth control valve 36 is provided on the second pipeline 27.

[0018] In order to filter the impurities in the automotive urea extracted from the raw material storage tank 22, a filter 37 is provided on a pipeline at the front end of the liquid inlet of the second pipeline 27, and the impurities in the automotive urea are filtered by the filter 37; and the system also includes a PLC controller, which is an existing central controller. The PLC controller is communicated with the first regulating valve 31, the second regulating valve 34, the third control valve 35 and the fourth control valve 36. The PLC controller controls the connection state of the first regulating valve 31, the second regulating valve 34, the third control valve 35 and the fourth control valve 36, thereby automatically controlling the liquid inlet and discharge conditions of the high-level tank 24 or the low-level tank 25, and improving the accuracy of the filling amount, so that the filling accuracy reaches within three thousandths.

[0019] The filter in the present system comprises a housing 1 and a filter cartridge 2 arranged in the housing 1, wherein the filter cartridge 2 is connected to a backwash liquid inlet pipe 3 penetrating from the housing 1 on the lower side, and is connected to a backwash liquid discharge pipe 4 penetrating from the housing 1 on the upper side of the filter cartridge 2, a rotating shaft 5 is rotatably arranged in the filter cartridge 2, the rotating shaft 5 is connected to a support block 7 parallel to the rotating shaft 5 through a plurality of telescopic rods 6, and a cleaning brush 8 is connected to the side of the support block 7 close to the inner wall of the filter cartridge 2; the rotating shaft 5 is provided with an adjustment mechanism, the adjustment mechanism comprises a handle assembly for driving the rotating shaft 5 to rotate and an adjustment assembly for adjusting the plurality of telescopic rods 6 to perform synchronous telescopic motion, and the handle assembly is passed from the bottom of the housing 1 to the filter cartridge 2 The bottom is spline-connected to the filter cartridge 2; the lower end of the rotating shaft 5 is rotatably connected to the bottom of the filter cartridge 2, and the lower end of the rotating shaft 5 is provided with a mounting groove 9 arranged in its axial direction, and the bottom of the mounting groove 9 is provided with a through hole penetrating from the side wall of the rotating shaft 5. The adjusting component includes an elastic telescopic sleeve 10 connected between the rotating shaft 5 and the support block 7, and the elastic telescopic sleeve 10 is connected with a traction rope 11 for adjusting its telescopic amount. A guide wheel 12 for guiding the traction rope 11 is arranged in the mounting groove 9, and the free end of the traction rope 11 passes through the through hole and the mounting groove 9 and then freely passes through the bottom of the shell 1 in the handle assembly to control the locking state of the traction rope 11 through the fixing part on the handle assembly.

[0020] Among them, the handle assembly used includes a transmission shaft 13 spline-connected to the filter cartridge 2, the lower end of the transmission shaft 13 passes through the bottom of the shell 1 and the transmission shaft 13 is rotatably connected to the shell 1, and the lower end of the transmission shaft 13 is connected to a driving handle 14, and the fixing part includes a plurality of locking rods 15 arranged on the driving handle 14 at intervals in the vertical direction and a locking ring 16 connected to the free end of the traction line; the traction rope 11 is locked and fixed by the locking ring 16 being sleeved on the locking rod 15; in this embodiment, there are two locking rods 15, and when the locking ring 16 is hung on the locking rod 15 located on the upper side, the elastic telescopic sleeve 10 is extended, and the cleaning brush 8 contacts the inner wall of the filter cartridge 2, so that the cleaning brush 8 can clean the impurities adhered to the inner wall of the filter cartridge 2; when the locking ring 16 is hung on the locking rod 15 located on the lower side, the elastic telescopic sleeve 10 contracts, and the cleaning brush 8 is out of contact with the inner wall of the filter cartridge 2, and the filter can perform filtering work.

[0021] At the same time, a positioning groove is opened at the bottom of the shell 1 in this embodiment, and a positioning column 17 embedded in the positioning groove is connected to the bottom of the filter cartridge 2. The transmission shaft 13 passes through the positioning column 17 and rotates freely. An annular support sealing ring 18 is arranged on the upper side of the inner wall of the shell 1 along its circumference. After the filter cartridge 2 passes through the annular support sealing ring 18, it abuts against the annular support sealing ring 18 through the sealing cover on the top of the filter cartridge 2; the matching design of the positioning groove and the positioning column 17 facilitates the installation and positioning of the filter cartridge 2, and the annular support sealing ring 18 further positions, supports and seals the filter cartridge 2, so that an independent sealed cavity is formed in the shell 1 above the filter cartridge 2; a liquid inlet pipe 19 is connected to the top of the shell 1, and the shell 1 A drain pipe 20 is connected to the lower side wall, a liquid guide hole 21 is opened on the sealing cover at the top of the filter cartridge 2, a guide hole is opened on the annular support sealing ring 18, and the liquid inlet of the recoil liquid discharge pipe 4 is connected with the guide hole; when the filter is filtering, the recoil liquid inlet pipe 3 and the recoil liquid discharge pipe 4 are both in a sealed state, and the automotive urea solution introduced in the liquid inlet pipe 19 enters the independent sealed cavity and then passes through the liquid guide hole 21 to be filtered through the filter cartridge 2; when the filter is cleaned, the liquid inlet pipe 19 and the drain pipe 20 are both in a sealed state, and the flushing liquid introduced in the recoil liquid pipe 3 enters the filter cartridge 2, overflows from the liquid guide hole 21 to the independent sealed cavity, and is introduced into the recoil liquid discharge pipe 4 from the guide hole for discharge.

[0022] The elastic telescopic sleeve 10 in this embodiment includes an outer cylinder 101 connected to the rotating shaft 5 and connected to the through hole, and an inner rod 102 slidably arranged in the outer cylinder 101 and connected to the support block 7. A connecting block 103 is arranged in the inner cylinder, and a plurality of supporting springs 104 distributed in an annular shape are connected between the connecting block 103 and the inner rod 102. A through hole is opened on the connecting block 103 for the traction rope 11 to pass freely. The inner rod 102 is made to slide in the outer cylinder 101 by the traction rope 11 to adjust the length of the elastic telescopic sleeve 10, thereby adjusting the contact state between the cleaning brush 8 and the inner wall of the filter cylinder 2, and the supporting spring 104 provides a reset support force for the inner rod 102.

[0023] When the filter is filtering, the recoil liquid inlet pipe 3 and the recoil liquid discharge pipe 4 are both in a sealed state, and the automotive urea solution introduced into the liquid inlet pipe 19 enters the independent sealed cavity, passes through the liquid guide hole 21, enters the filter cartridge 2, is filtered, enters the housing 1, and is discharged from the liquid discharge pipe 20 to complete the filtering work; when the filter is cleaned, the locking ring 16 hung on the locking rod 15 on the lower side is hung on the locking rod 15 on the upper side, and the inner rod 102 slides under the elastic supporting force of the supporting spring 104, so that the cleaning brush 8 contacts the inner wall of the filter cartridge 2, and the rotating shaft 5 is rotated by the driving handle 14, so that the cleaning brush 8 peels off the impurities adhering to the inner wall of the filter cartridge 2, and the liquid inlet pipe 19 and the liquid discharge pipe 20 are sealed at the same time, and the flushing liquid is connected to the recoil liquid inlet pipe 3.

[0024] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. 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 solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the present invention, which should be included in the scope of the claims of the present invention.

Claims

1. A vehicle urea filling system, characterized in that: It includes a raw material storage tank and a multi-head filling machine, a high-level tank and a low-level tank arranged from top to bottom, the raw material storage tank is connected to the high-level tank through a first pipeline, the middle part of the first pipeline is connected to the low-level tank through a second pipeline, the first pipeline is provided with a suction pump located at the front end of the liquid inlet of the second pipeline, the high-level tank is connected to the liquid inlet of the multi-head filling machine through a third pipeline, the low-level tank is connected to the liquid inlet of the multi-head filling machine through a fourth pipeline, and the third pipeline and the fourth pipeline are both provided with a first regulating valve; It also includes a liquid distributor, which is arranged on the third pipeline and located at the rear end of the liquid outlet of the first regulating valve on the third pipeline. The bottom of the liquid distributor is connected to the multiple liquid inlets of the multi-head filling machine through multiple parallel connecting pipes. The liquid outlet of the liquid distributor is connected to the middle of the fourth pipeline via a fifth pipeline. The connection point between the fifth pipeline and the fourth pipeline is located at the rear end of the liquid outlet of the first regulating valve on the fourth pipeline. The fifth pipeline is provided with a second regulating valve. The first pipeline is provided with a filter located at the front end of the liquid inlet of the second pipeline; When filling a small-volume PE pot, close the first regulating valve on the third pipeline and connect the first regulating valve on the fourth pipeline; when filling a large-volume PE pot, close the first regulating valve on the fourth pipeline and connect the first regulating valve on the third pipeline.

2. The vehicle urea filling system according to claim 1, characterized in that: A PLC controller is also included, and the PLC controller is communicatively connected with the first regulating valve and the second regulating valve.

3. The vehicle urea filling system according to claim 1, characterized in that: The filter comprises a housing and a filter cartridge arranged in the housing, a backwash liquid inlet pipe penetrating from the housing is connected to the lower side of the filter cartridge, a backwash liquid outlet pipe penetrating from the housing is connected to the upper side of the filter cartridge, a rotating shaft is rotatably arranged in the filter cartridge, the rotating shaft is connected to a support block parallel to the rotating shaft through a plurality of telescopic rods, and a cleaning brush is connected to the side of the support block close to the inner wall of the filter cartridge; The rotating shaft is provided with an adjusting mechanism, which includes a handle assembly for driving the rotating shaft to rotate and an adjusting assembly for adjusting multiple telescopic rods to perform synchronous telescopic movement. The handle assembly is passed from the bottom of the shell to the bottom of the filter cartridge and is splined to the filter cartridge; the lower end of the rotating shaft is rotatably connected to the bottom of the filter cartridge, and the lower end of the rotating shaft is provided with a mounting groove arranged in its axial direction, and the bottom of the mounting groove is provided with a through hole passing through the side wall of the rotating shaft. The adjusting assembly includes an elastic telescopic sleeve connected between the rotating shaft and the support block, and a traction rope for adjusting the telescopic amount of the elastic telescopic sleeve is connected to the elastic telescopic sleeve, and a guide wheel for guiding the traction rope is provided in the mounting groove. The free end of the traction rope passes through the through hole and the mounting groove and then freely passes through the bottom of the shell from the handle assembly, and the locking state of the traction rope is controlled by the fixing part on the handle assembly.

4. The vehicle urea filling system according to claim 3, characterized in that: The handle assembly includes a transmission shaft splined to the filter cartridge, the lower end of the transmission shaft passes through the bottom of the shell and is rotatably connected to the shell, the lower end of the transmission shaft is connected to a driving handle, and the fixing part includes a plurality of locking rods arranged on the driving handle at intervals in the vertical direction and a locking ring connected to the free end of the traction line; the traction rope is locked and fixed by sleeved on the locking rod with the locking ring.

5. The vehicle urea filling system according to claim 4, characterized in that: A positioning groove is provided at the bottom of the shell, and a positioning column embedded in the positioning groove is connected to the bottom of the filter cartridge. The transmission shaft passes through the positioning column and rotates freely. An annular support sealing ring is arranged along the circumference of the upper side of the inner wall of the shell. After the filter cartridge passes through the annular support sealing ring, it is abutted against the annular support sealing ring through the sealing cover on the top of the filter cartridge.

6. A vehicle urea filling system according to claim 5, characterized in that: The top of the shell is connected with a liquid inlet pipe, the lower side wall of the shell is connected with a liquid discharge pipe, the sealing cover on the top of the filter cartridge is provided with a liquid guide hole, the annular support sealing ring is provided with a flow guide hole, and the liquid inlet of the recoil liquid discharge pipe is connected with the flow guide hole.

7. A vehicle urea filling system according to any one of claims 3-6, characterized in that: The elastic telescopic sleeve includes an outer cylinder connected to the rotating shaft and communicated with the through hole, and an inner rod slidably arranged in the outer cylinder and connected to the support block. A connecting block is arranged in the inner cylinder of the outer cylinder, and a plurality of supporting springs distributed in an annular shape are connected between the connecting block and the inner rod. A through hole is opened on the connecting block for the traction rope to pass freely.

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