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CN-119491757-B - Urea filling pipe and vehicle

CN119491757BCN 119491757 BCN119491757 BCN 119491757BCN-119491757-B

Abstract

The invention discloses a urea filling pipe and a vehicle. The urea filling pipe comprises a pipe body and a filter element, wherein the pipe body is provided with a fluid circulation cavity and a filling port communicated with the fluid circulation cavity, the filter element is provided with a first state and a second state, the circumferential edge of the filter element is matched with the circumferential wall surface of the fluid circulation cavity in the first state, so that the filter element filters fluid flowing through the fluid circulation cavity, at least part of the outer circumferential edge of the filter element is separated from the inner circumferential wall of the fluid circulation cavity in the second state, and the filter element is configured to be switched between the first state and the second state. The invention can reduce the possibility of impurities entering the urea box so as to pollute the urea box, and has little influence on the smoothness of the filling process of the filling gun.

Inventors

  • ZHOU SHUO
  • ZHANG XINMING
  • LU HUI

Assignees

  • 长城汽车股份有限公司

Dates

Publication Date
20260505
Application Date
20230816

Claims (13)

  1. 1. A urea filling pipe, comprising: A tube body (10), the tube body (10) having a fluid circulation chamber (102) and a filler neck (101) in communication with the fluid circulation chamber (102); A filter element (20), the filter element (20) having a first state in which a circumferential edge of the filter element (20) cooperates with a circumferential wall of the fluid flow chamber (102) to cause the filter element (20) to filter fluid flowing through the fluid flow chamber (102), and a second state in which at least a portion of an outer circumferential edge of the filter element (20) is separated from an inner circumferential wall of the fluid flow chamber (102), The filter element (20) is configured to be switchable between the first state and the second state, the filter element being in the first state when the urea is being filled manually and the filter element being in the second state when the urea is being filled by a filling gun.
  2. 2. Urea filling pipe according to claim 1, characterized in that it further comprises a housing (30), said housing (30) being provided to said pipe body (10), said housing (30) having a housing cavity (301), said filter element (20) being configured to be movable between said fluid circulation cavity (102) and said housing cavity (301), said filter element (20) being located in said fluid circulation cavity (102) in said first state, said filter element (20) being located at least partially in said housing cavity (301) in said second state.
  3. 3. Urea filling pipe according to claim 2, characterized in that it further comprises a first rope (40) and a first elastic member (50), one end of the first rope (40) and one end of the first elastic member (50) being connected to the filter element (20), respectively, the first rope (40) being intended to pull the filter element (20), the other end of the first elastic member (50) being connected to the housing (30), the first elastic member (50) being intended to provide a restoring force in the opposite direction to the pull of the first rope (40).
  4. 4. A urea filling tube according to claim 3, further comprising a rope fixing assembly (60), said rope fixing assembly (60) being connected to the other end of the first rope (40); -the cord-securing assembly (60) being adapted to pull the first cord (40) a first distance to switch and hold the filter element (20) from the first state to the second state; The cord-securing assembly (60) is also configured to pull the first cord (40) a second distance to switch and retain the filter element (20) from the second state to the first state.
  5. 5. The urea fill tube of claim 4, wherein the first distance is less than the second distance.
  6. 6. Urea filling pipe according to claim 5, characterized in that it further comprises a first detecting member in communication connection for detecting whether the filling port (101) is in a closed state or not, and an execution control assembly for controlling the rope fixing assembly (60) at least once in a closed state of the filling port (101) to perform a setting action, which in turn pulls the first rope (40) to move a first distance, a second distance.
  7. 7. Urea filling pipe according to claim 4, characterized in that the rope fixing assembly (60) comprises: A fixing member (601), wherein the fixing member (601) is arranged on the pipe body (10); The sliding block (602), the said sliding block (602) is connected with another end of the said first rope (40), the said sliding block (602) locates the said fixed part (601) slidably along the set direction; -the slider (602) is adapted to pull the first cord (40) a first distance to switch and hold the filter element (20) from the first state to the second state; the slider (602) is further configured to pull the first cord (40) a second distance to switch and maintain the filter element (20) from the second state to the first state.
  8. 8. Urea filling pipe according to claim 7, characterized in that the rope fixing assembly (60) further comprises a second elastic member (605), both ends of the second elastic member (605) being connected to the fixing member (601) and the slider (602), respectively, the second elastic member (605) being adapted to provide a restoring force in the opposite direction to the pulling direction of the first rope (40).
  9. 9. Urea filling pipe according to claim 7, characterized in that it further comprises a driving assembly for driving the sliding block (602) to slide in the set direction in a direction away from the first rope (40).
  10. 10. The urea filling tube according to claim 9, characterized in that the drive assembly comprises a second rope (801), wherein one end of the second rope (801) is connected to the slider (602), the second rope (801) being used to pull the slider (602) in the set direction and away from the side of the first rope (40), the other end of the second rope (801) extending outside the urea filling tube, and/or, The driving assembly comprises an energizing coil (802) and a magnetic piece (803) which are matched with each other, one of the energizing coil (802) and the magnetic piece (803) is arranged on the sliding block (602), the other of the energizing coil (802) and the magnetic piece (803) is arranged on the fixing piece (601), and the energizing coil (802) and the magnetic piece (803) are magnetically matched to apply driving force to the sliding block (602) along the set direction and the direction far away from the first rope (40).
  11. 11. Urea filler pipe according to claim 2, characterized in that the filter element (20) comprises a flexible skeleton (201) and a filter portion (202), the circumferential edge of the filter portion (202) being connected to the flexible skeleton (201), the filter element (20) being in a folded state in the state of being inside the receiving chamber (301), the filter element (20) being in a unfolded state in the state of being inside the fluid circulation chamber (102), the circumferential edge of the flexible skeleton (201) being in sealing engagement with the circumferential side wall of the fluid circulation chamber (102).
  12. 12. Urea filling pipe according to any one of claims 1-11, further comprising a second detection element for detecting whether the filling of the urea filling pipe is gun filling, the filter element (20) being configured to switch to the second state when the filling of the urea filling pipe is gun filling and to switch to the first state after filling is completed.
  13. 13. A vehicle comprising a urea filler pipe according to any one of claims 1-12.

Description

Urea filling pipe and vehicle Technical Field The invention relates to the technical field of vehicle parts, in particular to a urea filling pipe and a vehicle. Background With the upgrading of regulations, diesel-vehicle-type urea systems are beginning to be widely used. The urea system mainly comprises a urea filling structure (filling pipe), a storage structure (urea box), a control and injection structure (control unit and pump body), a conveying structure (conveying pipeline) and an injection execution structure (injector), wherein a user fills urea solution through the urea filling pipe and stores the urea solution into the urea box for use by a vehicle. At present, the urea filling mode has two modes of filling gun filling and manual filling, and as the urea solution consumption speed is far lower than the diesel consumption speed, the popularization rate of urea filling machine equipment in the market is lower, so that the manual filling condition is far more than that of filling gun filling. The urea solution is manually filled into the filling pipe of the vehicle urea system, the plastic pipe is often used when urea is manually filled into the filling pipe of the vehicle urea system, and the plastic pipe is easy to enter the urea box when the impurities stained during repeated use and preservation are also easy to enter the urea box, so that the urea solution is polluted and other parts are damaged. Disclosure of Invention In view of this, the present invention aims to propose a urea filling pipe which is able to reduce the possibility of impurities entering the urea tank, thus contaminating the urea tank, with little impact on the smoothness of the filling process of the filling gun. In order to achieve the above purpose, the technical scheme of the invention is realized as follows: a urea filling pipe comprising: the pipe body is provided with a fluid circulation cavity and a filling port communicated with the fluid circulation cavity; a filter element having a first state in which a circumferential edge of the filter element cooperates with a circumferential wall of the fluid flow chamber to cause the filter element to filter fluid flowing through the fluid flow chamber, and a second state in which at least a portion of an outer circumferential edge of the filter element is separated from an inner circumferential wall of the fluid flow chamber, the filter element being configured to be switchable between the first state and the second state. In some embodiments, the urea fill pipe further comprises a housing disposed on the pipe body, the housing having a receiving cavity, the filter being configured to be movable between the fluid flow cavity and the receiving cavity, the filter being positioned within the fluid flow cavity in the first state and the filter being positioned at least partially within the receiving cavity in the second state. In some embodiments, the urea filling pipe further comprises a first rope and a first elastic member, wherein one end of the first rope and one end of the first elastic member are respectively connected with the filter member, the first rope is used for pulling the filter member, the other end of the first elastic member is connected with the shell, and the first elastic member is used for providing a restoring force opposite to the pulling direction of the first rope. In some embodiments, the urea fill pipe further comprises a rope securing assembly connected to the other end of the first rope; The cord-securing assembly is configured to pull the first cord a first distance to switch and retain the filter element from the first state to the second state; The cord-securing assembly is also configured to pull the first cord a second distance to switch and retain the filter element from the second state to the first state. In some embodiments, the first distance is less than the second distance. In some embodiments, the urea filling pipe further comprises a first detecting member and an execution control component which are in communication connection, wherein the first detecting member is used for detecting whether the filling port is in a closed state, and the execution control component is used for controlling the rope fixing component to execute at least one setting action when the filling port is in the closed state, and the setting action is used for sequentially pulling the first rope to move a first distance and a second distance. In some embodiments, the rope securing assembly includes: The fixing piece is arranged on the pipe body; the sliding block is connected with the other end of the first rope and is slidably arranged on the fixing piece along the set direction; the sliding block is used for pulling the first rope for a first distance so that the filter element is switched from the first state to the second state; the slider is also used for pulling the first rope for a second distance so that the filter element is switched from the second stat