A new type of password lock self-closing anti-filling valve

Abstract

The present invention relates to the technical field of liquefied petroleum gas filling, and discloses a novel password lock self-closing anti-filling valve, the anti-filling valve comprises a valve body and a novel password lock anti-filling device arranged in the valve body, the novel password lock anti-filling device comprises an assembled unlocking shaft, a driving shaft, a conical sealing ring, a password protection disk, a reset disk, a tightening nut, a sealing disk, a password disk, and a spring. The anti-filling valve of the present invention optimizes the structure of the internal password lock anti-filling device, and slidably connects the password disk to the sealing disk, so that under the action of a smaller air flow force, the password disk can also slide on the sealing disk to seal the airway of the sealing disk, thereby effectively solving the technical defects of slow filling timeliness and malicious damage; at the same time, the driving shaft of the anti-filling valve adopts a flat structure to drive the reset disk and the sealing disk, the structure is compact and stable, the reliability is high, and the production materials are less, which greatly reduces the production cost.

Description

Technical Field

[0001] The invention relates to the technical field of liquefied petroleum gas filling, in particular to a novel password lock self-closing anti-filling valve. Background Art

[0002] In recent years, liquefied gas, as a new type of fuel, has rapidly entered thousands of households. However, due to the potential safety hazards of liquefied gas cylinders filled with liquefied gas, the personal and property safety of users may be endangered.

[0003] At present, there are many informal filling points operating in the liquefied gas filling industry. These filling points do not have filling qualifications, and their filling equipment and filling technology do not meet the requirements of national regulations. There are major safety hazards when filling liquefied gas cylinders.

[0004] In order to ensure the safety of users' lives and property, the currently used intelligent valves for liquefied gas cylinders have a fixed-point filling function, which enables the liquefied gas cylinders to be filled at a fixed point, and can establish a complete management file for the liquefied gas cylinders. The intelligent valve performs anti-filling management by setting a self-closing anti-filling structure in the valve mouth, such as a self-closing password lock anti-filling structure arranged in a valve disclosed in Chinese patent application No.: 201811115477.9, and a new self-closing anti-filling structure arranged in a valve disclosed in Chinese patent application No.: 202020078219.4. The above existing password lock anti-filling structures The first combination (unlocking) disk is used to seal the air passage of the second combination (unlocking) disk, and a spring is provided between the two. In the locked state, when low-pressure slow charging is performed, due to the small gas impact force and the first combination (unlocking) disk being acted upon by the spring elastic force, the first combination (unlocking) disk will not easily slide toward the second combination (unlocking) disk to seal the air passage of the second combination (unlocking) disk. Therefore, even if the lock is closed, the illegal filling timeliness cannot be completely eliminated, that is, the existing combination lock anti-filling structure cannot solve the technical defect of slow filling timeliness, so that the existing combination lock anti-filling structure cannot perfectly achieve the purpose of anti-filling. Summary of the invention

[0005] In view of the deficiencies in the prior art, the technical problem to be solved by the present invention is to provide a new type of password lock self-closing anti-filling valve, which optimizes the structure of the internal password lock anti-filling device, has a compact and stable structure, high reliability, and low production cost, and at the same time effectively solves the technical defect of low-pressure slow filling timeliness.

[0006] In order to solve the above technical problems, the present invention is implemented by the following scheme: a new type of password lock self-closing anti-filling valve, the anti-filling valve comprises a valve body, a valve nozzle for inlet and outlet of air is arranged on the valve body, a valve seat sleeve is clamped in the valve nozzle, a through hole is arranged in the center of the valve seat sleeve, the valve nozzle is located in the cavity of the valve seat sleeve close to the valve body, and a new type of password lock anti-filling device is slidably connected, the new type of password lock anti-filling device comprises:

[0007] An unlocking shaft, the unlocking end of which is exposed in the through hole of the valve seat sleeve;

[0008] The drive shaft is anti-slip assembled and fastened to one end of the unlocking shaft, and its outer wall is provided with a threaded ring, and the side of the threaded ring close to the unlocking shaft is provided with inner and outer steps for assembly, and the side of the inner and outer steps close to the unlocking shaft is provided with a smooth section;

[0009] A conical sealing ring is clamped between the outer wall of the unlocking shaft and the driving shaft, and when the conical sealing ring slides with the new password lock anti-filling device, it can form a sealing structure with the inner port of the valve seat sleeve;

[0010] The password protection disk is rotatably mounted at the corner of the outer step of the driving shaft, wherein the end of the middle part close to the unlocking shaft is provided with a spring outer groove, and the edge of the end far from the locking shaft is provided with a boss, and the outer side of the spring outer groove is radially provided with a limit block, and the edge of the disk surface is provided with a first arc-shaped air channel;

[0011] The reset disk is anti-slip mounted at the corner of the inner step of the driving shaft, and a reset driving member is provided on one end surface of the reset disk close to the password protection disk, and a second arc-shaped air channel is provided on the disk surface. When the reset disk rotates with the driving shaft, the reset driving member can act with the boss to drive the password protection disk to rotate;

[0012] A tightening nut, threadedly connected to the threaded ring of the drive shaft, for axially fixing the password protection disk and the reset disk;

[0013] The sealing disk is slidably mounted on the smooth section of the driving shaft, wherein the end of the middle part close to the password protection disk is provided with a spring inner groove, the end away from the password protection disk is provided with a sliding platform ring, and the edge of the disk surface is provided with a third arc-shaped air channel;

[0014] A code disk is slidably connected to the sliding bearing ring of the sealing disk, and its disk surface is a closed structure, and a top protrusion is provided at one end edge close to the sealing disk;

[0015] A spring is assembled and arranged on the smooth section of the drive shaft, one end of which abuts against the outer groove of the spring and the other end of which abuts against the inner groove of the spring;

[0016] In the unlocked state, the top protrusion of the code disk is aligned with the limit block of the code protection disk, so that the third arc-shaped airway of the sealing disk is opened; in the locked state, the top protrusion of the code disk is misaligned with the limit block of the code protection disk, and under the action of the micro-airflow, the code disk slides inward to seal and close the third arc-shaped airway of the sealing disk.

[0017] Furthermore, the outer wall of the password protection disk is provided with a groove, an O-type sealing ring is provided in the groove, and the O-type sealing ring is tightly attached to the inner wall of the valve mouth.

[0018] Furthermore, it also includes a conical spring, wherein the small end of the conical spring abuts against the inner end surface of the reset disk, and the large end abuts against the inner end wall of the valve mouth.

[0019] Furthermore, the outer end of the unlocking shaft is provided with a straight unlocking groove, and the inner end is provided with an anti-slip convex column;

[0020] The outer end surface of the driving shaft is provided with a T-shaped slot, and the inner end surface is provided with a rivet hole. The anti-skid protrusion of the unlocking shaft is assembled in the T-shaped slot and fixed by a fastening screw.

[0021] Furthermore, the outer wall of the driving shaft is provided with a flat portion, which is connected to the reset disk and the sealing disk through the flat portion for anti-slip limiting.

[0022] Furthermore, the outer wall of the reset disk is in close contact with the inner wall of the valve mouth, and a through hole is provided at the center thereof for the drive shaft to pass through, and a flat opening matching the flat position is provided at the edge of the through hole.

[0023] Furthermore, the outer wall of the sealing disk is in close contact with the inner wall of the valve mouth, and a through hole is provided at the center thereof for the drive shaft to pass through, and a flat opening matching the flat position is provided at the edge of the through hole.

[0024] Furthermore, the boss and the limiting block are on the same straight line.

[0025] Furthermore, the code disk is anti-skid connected to the sealing disk through a flat position, and a gap is left between the code disk and the inner wall of the valve mouth.

[0026] Compared with the prior art, the beneficial effects of the present invention are: the anti-filling valve of the present invention optimizes the structure of the internal password lock anti-filling device, and slidably connects the password disk to the sealing disk, so that under the action of a smaller air flow force, the password disk can also slide on the sealing disk to seal the airway of the sealing disk, thereby effectively solving the technical defect of low-pressure slow filling timeliness; the driving shaft of the anti-filling valve of the present invention adopts a flat structure to drive the reset disk and the sealing disk, which has a compact and stable structure, high reliability, less production materials, and greatly reduces the production cost; the spring assembly of the anti-filling valve of the present invention is equipped on the driving shaft, which is stable and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a cross-sectional view of the anti-filling valve of the present invention;

[0028] Figure 2 It is a cross-sectional view of the anti-filling device of the anti-filling valve password lock of the present invention;

[0029] Figure 3 It is a three-dimensional structural schematic diagram of the novel anti-charging device for password lock of the present invention;

[0030] Figure 4 It is a three-dimensional structural schematic diagram of the unlocking shaft of the novel anti-charging device of the password lock of the present invention;

[0031] Figure 5 It is a cross-sectional view of the driving shaft of the novel anti-filling device of the password lock of the present invention;

[0032] Figure 6 It is a three-dimensional structural schematic diagram of the driving shaft of the novel anti-filling device of the password lock of the present invention;

[0033] Figure 7 It is a three-dimensional structural schematic diagram of the password protection disk of the novel password lock anti-charging device of the present invention;

[0034] Figure 8 It is a schematic diagram of the three-dimensional structure of the password protection disk of the novel password lock anti-charging device of the present invention from another perspective;

[0035] Fig. 9 It is a three-dimensional structural schematic diagram of the reset disk of the novel anti-charging device of the password lock of the present invention;

[0036] Fig.10 It is a three-dimensional structural schematic diagram of the sealing disk of the novel anti-filling device of the password lock of the present invention;

[0037] Fig.11 It is a three-dimensional structural schematic diagram of the sealing disk of the anti-filling device of the new password lock of the present invention from another perspective;

[0038] Fig.12 It is a three-dimensional structural schematic diagram of the password disk of the novel anti-charging device of the password lock of the present invention;

[0039] Fig.13 This is a schematic diagram of the connection between the driving shaft and the reset disk of the novel anti-filling device of the password lock of the present invention;

[0040] Fig.14 This is a schematic diagram of the connection between the driving shaft and the sealing disk of the novel anti-filling device of the password lock of the present invention;

[0041] Fig.15 This is a schematic diagram of the connection between the sealing disk and the password disk of the new anti-filling device of the password lock of the present invention;

[0042] Fig.16 This is a schematic diagram of the natural state of the novel anti-charging device for password lock of the present invention;

[0043] Fig.17 This is a schematic diagram of the locked and self-closing state of the new password lock anti-charging device of the present invention;

[0044] Fig.18 This is a schematic diagram of the unlocking and inflating state of the new anti-charging device for a password lock of the present invention. DETAILED DESCRIPTION

[0045] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention. Example

[0046] See attached Figures 1 to 8 The present invention provides a new type of password lock self-closing anti-filling valve, the anti-filling valve comprises a valve body 1, a valve mouth 2 for inlet and outlet of air is arranged on the valve body 1, a valve seat sleeve 3 is clamped in the valve mouth 2, a through hole is arranged in the center of the valve seat sleeve 3, the valve mouth 2 is located in the cavity of the valve seat sleeve 3 on the side close to the valve body 1, and a new type of password lock anti-filling device is slidably connected thereto, the new type of password lock anti-filling device comprises:

[0047] An unlocking shaft 4, an unlocking end of which is exposed in the through hole of the valve seat sleeve 3;

[0048] The drive shaft 5 is anti-slip assembled and fastened to one end of the unlocking shaft 4, and its outer wall is provided with a threaded ring, and the side of the threaded ring close to the unlocking shaft 4 is provided with inner and outer steps for assembly, and the side of the inner and outer steps close to the unlocking shaft 4 is provided with a smooth section;

[0049] The conical sealing ring 6 is clamped between the outer wall of the unlocking shaft 4 and the driving shaft 5. When it slides with the new password lock anti-filling device, it can form a sealing structure with the inner port of the valve seat sleeve 3, and the sealing performance is good.

[0050] The password protection disk 7 is rotatably assembled at the corner of the outer step of the driving shaft 5, wherein the end of the middle part close to the unlocking shaft 4 is provided with a spring outer groove 71, and the edge of the end far from the lock shaft 4 is provided with a boss 72, and the outer side of the spring outer groove 71 is radially provided with a limit block 73, and the edge of the disk surface is provided with a first arc-shaped air channel 74, and the boss 72 and the limit block 73 are on the same straight line;

[0051] The reset disk 8 is anti-slip mounted at the corner of the step inside the driving shaft 5. A reset driving member 81 is provided on one end surface thereof close to the password protection disk 7. A second arc-shaped air passage 82 is provided on the disk surface. When the reset disk 8 rotates with the driving shaft 5, the reset driving member 81 can act on the boss 72 to drive the password protection disk 7 to rotate.

[0052] The tightening nut 9 is threadedly connected to the threaded ring of the driving shaft 5 and is used to axially fix the password protection disk 7 and the reset disk 8;

[0053] The sealing disk 10 is slidably mounted on the smooth section of the driving shaft 5, wherein the end of the middle part close to the password protection disk 7 is provided with a spring inner groove 101, the end away from the password protection disk 7 is provided with a sliding platform ring 102, and the edge of the disk surface is provided with a third arc-shaped air channel 103;

[0054] The code disk 11 is slidably connected to the sliding support ring 102 of the sealing disk 10, and its disk surface is a closed structure, and a top protrusion 111 is provided at one end edge close to the sealing disk 10;

[0055] The spring 12 is assembled and arranged on the smooth section of the driving shaft 5 , with one end of the spring abutting in the spring outer groove 71 and the other end of the spring abutting in the spring inner groove 101 .

[0056] In a preferred embodiment of the present invention, a groove is provided on the outer wall of the code protection disk 7 , an O-type sealing ring 13 is provided in the groove, and the O-type sealing ring 13 is closely attached to the inner wall of the valve mouth 2 .

[0057] Among them, the new password lock self-closing anti-filling valve of the present invention also includes a conical spring 14, the small end of the conical spring 14 abuts against the inner end surface of the reset disk 8, and the large end abuts against the inner end wall of the valve mouth 2. The new password lock anti-filling device can slide elastically inward and outward under the elastic action of the conical spring 14.

[0058] In a preferred embodiment of the present invention, Figure 4 As shown, the outer end of the unlocking shaft 4 is provided with a straight unlocking groove 41, and the inner end is provided with an anti-slip convex column 42; Figure 5 As shown, the outer end face of the drive shaft 5 is provided with a T-slot 51, and the anti-skid protrusion 42 of the unlocking shaft 4 is assembled in the T-slot 51 and fixed by a fastening screw 15; the inner end face of the drive shaft 5 is provided with a rivet hole 52. During assembly, the punch rod is inserted into the rivet hole 52 to expand the rivet hole 52, thereby playing the role of preventing the nut 9 from falling off and loosening.

[0059] In a preferred embodiment of the present invention, Figure 6 As shown, the outer wall of the driving shaft 5 is provided with a flat position 53, which is connected to the reset disk 8 and the sealing disk 10 through the flat position 53 for anti-slip limiting. Therefore, when the driving shaft 5 rotates, the reset disk 8 and the sealing disk 10 can be driven to rotate. This driving form has a simple structure and reduces the use of materials and reduces production costs compared to traditional raised drive.

[0060] In a preferred embodiment of the present invention, Fig. 9 , 13 As shown, the outer wall of the reset disk 8 is in close contact with the inner wall of the valve mouth 2 , and a through hole is provided in the center thereof for the drive shaft 5 to pass through, and a flat opening matching the flat position 53 is provided at the edge of the through hole.

[0061] In a preferred embodiment of the present invention, Fig.10 , 11As shown in 14 , the outer wall of the sealing disk 10 is in close contact with the inner wall of the valve mouth 2 , and a through hole is provided in the center thereof for the drive shaft 5 to pass through, and a flat opening matching the flat position 53 is provided at the edge of the through hole.

[0062] In a preferred embodiment of the present invention, Fig.11 , 12 As shown in FIGS. 15 , a gap is left between the code disk 11 and the inner wall of the valve nozzle 2, and the code disk 11 and the sealing disk 10 are connected through a flat position anti-slip connection, so when the sealing disk 10 rotates, the code disk 11 can be driven to rotate. Example

[0063] The new type of password lock self-closing anti-filling valve of the present invention has the following three states:

[0064] (1) Natural state: Fig.16 As shown, in this state, the new password lock anti-filling device, under the elastic force of the conical spring 14, makes the conical sealing ring 6 seal at the inner port of the valve seat sleeve 3, so that liquefied petroleum gas cannot enter or exit the valve;

[0065] (2) Locked and closed state: Fig.17 As shown, in this state, the top protrusion 111 of the code disk 11 is misaligned with the limit block 73 of the code protection disk 7. When the valve mouth is forcibly filled with liquefied gas, the sealing disk 10 slides inwards under the action of air pressure and is close to the code protection disk 7. The code disk 11 slides inwards to seal and close the third arc-shaped air channel 103 of the sealing disk 10, thereby preventing gas from entering. Even when the air pressure is low and slow, since the code disk 11 is not affected by elastic force, the tiny air pressure can be enough to push the code disk 11 to seal and close the third arc-shaped air channel 103 of the sealing disk 10, thereby effectively solving the technical defect of the timeliness of low-pressure slow charging in the prior art.

[0066] (3) Unlocking and inflating state: Fig.18 As shown, a special filling gun is aimed at the unlocking groove 41 of the unlocking shaft 4 and rotated. When the unlocking shaft 4 rotates, the driving shaft 5 is driven to rotate, and when the driving shaft 5 rotates, the reset disk 8 is driven to rotate, and when the reset disk 8 rotates, the password protection disk 7 is driven to rotate, so that the top protrusion 111 of the password disk 11 is aligned with the limit block 73 of the password protection disk 7, thereby opening the third arc-shaped airway 103 of the sealing disk 10. The alignment process includes two processes: forward resetting and reverse alignment. The specific alignment steps and principles are the same as the unlocking steps and principles disclosed in patent application number: 201811115477.9, and are not repeated here. Finally, the inflation switch of the filling gun is started. Since the third arc-shaped airway 103 is open, the liquefied petroleum gas can pass through the third arc-shaped airway 103, the first arc-shaped airway 74, and the second arc-shaped airway 82 in sequence, thereby achieving the purpose of unlocking and inflating.

[0067] When a traditional password lock anti-filling structure is used for filling, such as a self-closing password lock anti-filling structure arranged in a valve disclosed in Chinese Patent Application No.: 201811115477.9 (or a new self-closing anti-filling structure arranged in a valve disclosed in Chinese Patent Application No.: 202020078219.4), during strong charging, the first password (unlocking) disk will slide inward under the strong inflation pressure, thereby closing the airway; therefore, in order to prevent the first password (unlocking) disk from sliding inward under force, some unscrupulous merchants maliciously destroy the first password (unlocking) disk so that it cannot slide, such as dripping super glue to fix it, etc. Therefore, the valve after malicious damage cannot achieve the purpose of anti-filling. The anti-filling valve of the present invention optimizes the structure of the internal password lock anti-filling device, and slidably connects the password disk to the sealing disk. Even if glue is dripped inward, the password disk 11 will move closer to the sealing disk 10 due to its own gravity. When the glue drips and destroys it, the glue can stick the password disk 11 and the sealing disk 10 together, which also plays a sealing and anti-filling effect. Therefore, the anti-filling valve of the present invention also plays a role in preventing malicious damage.

[0068] The anti-filling valve of the present invention optimizes the structure of the internal password lock anti-filling device, and slidably connects the password disk to the sealing disk, so that under the action of a smaller air flow force, the password disk can also slide on the sealing disk to seal the airway of the sealing disk, thereby effectively solving the technical defect of the timeliness of low-pressure slow filling, and also plays a role in preventing malicious damage; the driving shaft of the anti-filling valve of the present invention adopts a flat structure to drive the reset disk and the sealing disk, with a compact and stable structure, high reliability, less production materials, and greatly reduced production costs; the spring assembly of the anti-filling valve of the present invention is equipped on the driving shaft, which is stable and reliable and has a long service life.

[0069] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A novel self-closing anti-filling valve with a password lock, the anti-filling valve comprising a valve body (1), the valve body (1) being provided with a valve nozzle (2) for inlet and outlet of air, the valve nozzle (2) being clamped with a valve seat sleeve (3), the center of the valve seat sleeve (3) being provided with a through hole, the valve nozzle (2) being located in a cavity of the valve seat sleeve (3) close to the valve body (1) and being slidably connected with a novel anti-filling device with a password lock, the characteristics of which are: The novel password lock anti-charging device comprises: An unlocking shaft (4), an unlocking end of which is exposed in the through hole of the valve seat sleeve (3); A drive shaft (5) is anti-slip mounted and fastened to one end of the unlocking shaft (4), and its outer wall is provided with a threaded ring, and the side of the threaded ring close to the unlocking shaft (4) is provided with inner and outer steps for assembly, and the side of the inner and outer steps close to the unlocking shaft (4) is provided with a smooth section; A conical sealing ring (6) is clamped between the outer wall of the unlocking shaft (4) and the driving shaft (5), and when sliding along with the new password lock anti-filling device, it can form a sealing structure with the inner port of the valve seat sleeve (3); A password protection disk (7) is rotatably mounted at the corner of the outer step of the driving shaft (5), wherein an end of the middle portion close to the unlocking shaft (4) is provided with a spring outer groove (71), and an edge of an end away from the locking shaft (4) is provided with a boss (72), a radially outer side of the spring outer groove (71) is provided with a limit block (73), and a first arc-shaped air channel (74) is provided at the edge of the disk surface; A reset disk (8) is anti-slip mounted at the corner of the inner step of the drive shaft (5), and a reset drive member (81) is provided on one end surface of the reset disk (8) close to the password protection disk (7). A second arc-shaped air passage (82) is provided on the disk surface. When the reset disk (8) rotates with the drive shaft (5), the reset drive member (81) can act on the boss (72) to drive the password protection disk (7) to rotate. A tightening nut (9) threadedly connected to the threaded ring of the drive shaft (5) and used for axially fixing the password protection disk (7) and the reset disk (8); A sealing disk (10) is slidably mounted on the smooth section of the drive shaft (5), wherein the end of the center close to the password protection disk (7) is provided with a spring inner groove (101), the end away from the password protection disk (7) is provided with a sliding support ring (102), and the edge of the disk surface is provided with a third arc-shaped air channel (103); A code disk (11) is slidably connected to the sliding support ring (102) of the sealing disk (10), the disk surface of which is a closed structure, and a top protrusion (111) is provided on an edge of one end close to the sealing disk (10); A spring (12) is assembled and arranged on the smooth section of the drive shaft (5), one end of which abuts against the spring outer groove (71) and the other end of which abuts against the spring inner groove (101); In the unlocked state, the top protrusion (111) of the combination disk (11) is aligned with the limit block (73) of the combination protection disk (7), so that the third arc-shaped air passage (103) of the sealing disk (10) is opened; in the locked state, the top protrusion (111) of the combination disk (11) is misaligned with the limit block (73) of the combination protection disk (7), and under the action of the micro-airflow, the combination disk (11) can slide inward to seal and close the third arc-shaped air passage (103) of the sealing disk (10).

2. The new type of password lock self-closing anti-filling valve according to claim 1 is characterized by: The outer wall of the password protection disk (7) is provided with a groove, an O-type sealing ring (13) is provided in the groove, and the O-type sealing ring (13) is tightly attached to the inner wall of the valve mouth (2).

3. The new type of password lock self-closing anti-filling valve according to claim 1 is characterized by: It also includes a conical spring (14), the small end of the conical spring (14) abuts against the inner end surface of the reset disk (8), and the large end abuts against the inner end wall of the valve mouth (2).

4. The new type of password lock self-closing anti-filling valve according to claim 1 is characterized by: The outer end of the unlocking shaft (4) is provided with a straight unlocking groove (41), and the inner end is provided with an anti-slip convex column (42); The outer end surface of the driving shaft (5) is provided with a T-shaped slot (51), and the inner end surface is provided with a rivet hole (52); the anti-slip boss (42) of the unlocking shaft (4) is assembled in the T-shaped slot (51) and fixed by a fastening screw (15).

5. The new type of password lock self-closing anti-filling valve according to claim 1 is characterized in that: The outer wall of the drive shaft (5) is provided with a flat portion (53), which is connected to the reset disk (8) and the sealing disk (10) through the flat portion (53) for anti-slip positioning.

6. The new type of self-closing anti-filling valve with password lock according to claim 5 is characterized in that: The outer wall of the reset disk (8) is in close contact with the inner wall of the valve mouth (2), and a through hole is provided at the center thereof through which the drive shaft (5) passes, and a flat opening matching the flat position (53) is provided at the edge of the through hole.

7. The new type of password lock self-closing anti-filling valve according to claim 5 is characterized by: The outer wall of the sealing disk (10) is in close contact with the inner wall of the valve mouth (2), and a through hole is provided at the center thereof through which the drive shaft (5) passes, and a flat opening matching the flat position (53) is provided at the edge of the through hole.

8. The new type of password lock self-closing anti-filling valve according to claim 1 is characterized by: The boss (72) and the limit block (73) are located on the same straight line.

9. The new type of password lock self-closing anti-filling valve according to claim 1 is characterized by: The code disk (11) is anti-sliply connected to the sealing disk (10) via a flat position, and a gap is left between the code disk (11) and the inner wall of the valve mouth (2).

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