Filling valve with back suction function

Abstract

The utility model relates to the technical field of filling valves, and discloses a filling valve with a back suction function, which comprises a filling valve body, a valve core is arranged in the filling valve body, one end of a valve rod is fixedly mounted at the top end of the valve core, and the other end of the valve rod movably extends out of the filling valve body. A mounting frame is fixedly mounted at the top end of the filling valve body, a filling opening mechanism used for a valve rod is arranged on the mounting frame, and a back suction tube sleeve is movably connected to the bottom of the filling valve body in a sleeved mode. The back-suction tube sleeve is driven to move downwards, a gap is formed between the inner wall of the back-suction tube sleeve and the outer wall of the liquid outlet end of the filling valve body, excessive liquid in a packaging bottle is sucked back through the annular groove, the two back-suction grooves and the back-suction tube through the outer suction mechanism, and the back-suction function of the excessive liquid in the packaging bottle is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of filling valves, in particular to a filling valve with a back-suction function. Background Art

[0002] The filling valve is an on-off valve that accurately and quantitatively controls the flow rate. It is widely used in food, packaging, petrochemical, metallurgy, painting, vehicles, printing and dyeing and other machinery. The filling valve adopts a lightweight design, exquisite appearance, compact structure and excellent performance.

[0003] There is a filling valve (whose authorization announcement number is: CN206927591U). When filling, the filling liquid enters from the filling liquid inlet of the filling valve, flows out through the inflow channel after passing through the annular filling channel of the valve stem, and the filling liquid pushes the switch diaphragm upward, and the inflow channel and the outflow channel are connected. The inflow channel and the outflow channel use an arc surface between them, which is connected quickly and has a large flow rate. Then, the filling liquid is discharged from the filling liquid discharge channel of the valve body to realize filling.

[0004] However, this type of filling valve has some shortcomings in the actual filling process: this type of filling valve has no liquid back-sucking function. When the liquid capacity filled into the packaging bottle exceeds the limit, it is not convenient to extract part of the excess liquid. Therefore, we propose a filling valve with a back-sucking function to solve the above problem. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a filling valve with a back-suction function, which is used to solve the above problems.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A filling valve with a back-suction function comprises a filling valve body, a valve core is arranged in the filling valve body, one end of a valve stem is fixedly mounted on the top of the valve core, the other end of the valve stem movably extends to the outside of the filling valve body, a mounting frame is fixedly mounted on the top of the filling valve body, a filling opening mechanism for the valve stem is arranged on the mounting frame, a back-suction sleeve is movably sleeved on the bottom of the filling valve body, an annular groove is arranged on the inner wall of the back-suction sleeve, two back-suction grooves are respectively arranged in the back-suction sleeve, the top ends of the two back-suction grooves are connected to the same back-suction pipe, and a lifting mechanism for the back-suction sleeve is arranged on the filling valve body.

[0008] Preferably, a liquid inlet pipe is provided on one side wall of the filling valve body, and the liquid inlet pipe is connected with the filling valve body to facilitate liquid to enter the filling valve body through the liquid inlet pipe.

[0009] Preferably, the filling opening mechanism includes a driving member and a driving rod, the driving member is fixedly mounted on the top side of the mounting frame, one end of the driving rod is fixedly mounted on the output end of the driving member, and the other end of the driving rod is fixedly mounted on the top end of the valve stem. By starting the driving member, the driving rod drives the valve stem and the valve core to move upward, so that the liquid in the filling valve body can flow out through the gap between the valve core and the liquid outlet end of the filling valve body, thereby realizing the filling of the packaging bottle below the filling valve body.

[0010] Preferably, the two back-suction grooves in the back-suction cylinder sleeve are symmetrically arranged, and the two back-suction grooves are connected with the annular groove, so as to facilitate the back-suction of excess liquid in the packaging bottle through the annular groove, the two back-suction grooves and the back-suction tube.

[0011] Preferably, the lifting mechanism includes a mounting ring and an electric push rod, the mounting ring is fixedly mounted on the top outer surface of the filling valve body, and two electric push rods are fixedly mounted on the bottom side of the mounting ring, and the output ends of the two electric push rods are fixedly mounted on the top side of the back-suction sleeve. By starting the two electric push rods, the back-suction sleeve is driven to move downward, so that a gap is generated between the inner wall of the back-suction sleeve and the outer wall of the liquid outlet end of the filling valve body, thereby facilitating the subsequent back-suction function.

[0012] Preferably, the outer side wall of the filling valve body is respectively provided with two limit grooves, and limit blocks are movably installed in the two limit grooves, and the two limit blocks are fixedly installed on the inner wall of the return suction sleeve to limit the return suction sleeve and prevent the return suction sleeve from deflecting during the rising or falling process.

[0013] Preferably, a first sealing ring is provided on the valve core, and the first sealing ring is in sealing fit with the inner wall of the tapered liquid outlet end of the filling valve body; a second sealing ring is provided on the tapered inner wall of the return suction sleeve, and the second sealing ring is in sealing fit with the outer wall of the tapered liquid outlet end of the filling valve body; thereby improving the sealing performance of the connection between the tapered liquid outlet end of the filling valve body and the valve core and the return suction sleeve.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] The filling valve with a back-suction function is configured to adjust the liquid outlet end of the filling valve body to extend below the liquid level in the packaging bottle, and then start two electric push rods to drive the back-suction sleeve to move downward, so that a gap is generated between the inner wall of the back-suction sleeve and the outer wall of the liquid outlet end of the filling valve body, and the excess liquid in the packaging bottle is back-sucked through the annular groove, the two back-suction grooves and the back-suction pipe by the external pumping mechanism, thereby realizing the back-suction function of the excess liquid in the packaging bottle. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model in a three-dimensional partial cross-section;

[0017] Figure 2 For this utility model Figure 1 The structural diagram of part A in the figure;

[0018] Figure 3 It is a schematic diagram of the structure of the utility model in side section;

[0019] Figure 4 It is a schematic structural diagram of a partial section view of the utility model from an exploded perspective.

[0020] In the figure: 1. filling valve body; 2. valve core; 3. valve stem; 4. mounting frame; 5. driving member; 6. driving rod; 7. suction cylinder sleeve; 8. ring groove; 9. suction groove; 10. suction pipe; 11. mounting ring; 12. electric push rod; 13. liquid inlet pipe; 14. limit groove; 15. limit block; 16. first sealing ring; 17. second sealing ring. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] Example: Refer to Figure 1-4 A filling valve with a back-suction function comprises a filling valve body 1, a valve core 2 is arranged in the filling valve body 1, one end of a valve stem 3 is fixedly mounted on the top of the valve core 2, the other end of the valve stem 3 is movably extended to the outside of the filling valve body 1, a mounting frame 4 is fixedly mounted on the top of the filling valve body 1, a filling opening mechanism for the valve stem 3 is arranged on the mounting frame 4, a back-suction sleeve 7 is movably sleeved on the bottom of the filling valve body 1, an annular groove 8 is arranged on the inner wall of the back-suction sleeve 7, two back-suction grooves 9 are respectively arranged in the back-suction sleeve 7, the top ends of the two back-suction grooves 9 are connected to the same back-suction pipe 10, and a lifting mechanism for the back-suction sleeve 7 is arranged on the filling valve body 1.

[0023] Furthermore, a liquid inlet pipe 13 is provided on one side wall of the filling valve body 1 , and the liquid inlet pipe 13 is connected with the filling valve body 1 , so that liquid can enter the filling valve body 1 through the liquid inlet pipe 13 .

[0024] Furthermore, the filling opening mechanism includes a driving member 5 and a driving rod 6. The driving member 5 is fixedly installed on the top side of the mounting frame 4, and one end of the driving rod 6 is fixedly installed on the output end of the driving member 5, and the other end of the driving rod 6 is fixedly installed on the top of the valve stem 3. By starting the driving member 5, the driving rod 6 drives the valve stem 3 and the valve core 2 to move upward, so that the liquid in the filling valve body 1 can flow out through the gap between the valve core 2 and the liquid outlet end of the filling valve body 1, thereby realizing the filling of the packaging bottle below the filling valve body 1.

[0025] Specifically, the two back-suction grooves 9 in the back-suction cylinder sleeve 7 are symmetrically arranged, and the two back-suction grooves 9 are connected with the annular groove 8, so as to facilitate the back-suction of excess liquid in the packaging bottle through the annular groove 8, the two back-suction grooves 9 and the back-suction tube 10.

[0026] Furthermore, the lifting mechanism includes a mounting ring 11 and an electric push rod 12. The mounting ring 11 is fixedly mounted on the top outer surface of the filling valve body 1, and two electric push rods 12 are fixedly mounted on the bottom side of the mounting ring 11. The output ends of the two electric push rods 12 are fixedly mounted on the top side of the back-suction sleeve 7. By starting the two electric push rods 12, the back-suction sleeve 7 is driven to move downward, so that a gap is generated between the inner wall of the back-suction sleeve 7 and the outer wall of the liquid outlet end of the filling valve body 1, which is convenient for the subsequent back-suction function.

[0027] Specifically, two limit grooves 14 are respectively provided on the outer wall of the filling valve body 1, and limit blocks 15 are movably installed in the two limit grooves 14. The two limit blocks 15 are fixedly installed on the inner wall of the return suction sleeve 7 to limit the return suction sleeve 7 and prevent the return suction sleeve 7 from deflecting during the rising or falling process.

[0028] Specifically, a first sealing ring 16 is provided on the valve core 2, and the first sealing ring 16 is in sealing fit with the inner wall of the tapered liquid outlet end of the filling valve body 1. A second sealing ring 17 is provided on the tapered inner wall of the suction sleeve 7, and the second sealing ring 17 is in sealing fit with the outer wall of the tapered liquid outlet end of the filling valve body 1; thereby improving the sealing performance of the connection between the tapered liquid outlet end of the filling valve body 1 and the valve core 2 and the suction sleeve 7.

[0029] During use: during filling, the filling valve body 1 is used for filling. Liquid is injected into the filling valve body 1 through the liquid inlet pipe 13. After that, the driving member 5 is started to drive the driving rod 6 to move the valve stem 3 and the valve core 2 upward, so that the liquid in the filling valve body 1 can flow out through the gap between the valve core 2 and the liquid outlet end of the filling valve body 1, thereby filling the packaging bottle below the filling valve body 1. When the liquid filled into the packaging bottle exceeds the amount, the liquid outlet end of the filling valve body 1 is adjusted to extend below the liquid level in the packaging bottle. After that, the two electric push rods 12 are started to drive the back-suction sleeve 7 to move downward, so that a gap is generated between the inner wall of the back-suction sleeve 7 and the outer wall of the liquid outlet end of the filling valve body 1. The excess liquid in the packaging bottle is back-sucked through the annular groove 8, the two back-suction grooves 9 and the back-suction pipe 10 by the external pumping mechanism, thereby realizing the back-suction function of the excess liquid in the packaging bottle.

[0030] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A filling valve with a suck-back function, comprising a filling valve body (1), characterized in that: A valve core (2) is arranged in the filling valve body (1), one end of a valve stem (3) is fixedly mounted on the top of the valve core (2), the other end of the valve stem (3) movably extends to the outside of the filling valve body (1), a mounting frame (4) is fixedly mounted on the top of the filling valve body (1), a filling opening mechanism for the valve stem (3) is arranged on the mounting frame (4), a back-suction sleeve (7) is movably sleeved on the bottom of the filling valve body (1), an annular groove (8) is arranged on the inner wall of the back-suction sleeve (7), two back-suction grooves (9) are respectively arranged in the back-suction sleeve (7), the top ends of the two back-suction grooves (9) are connected to the same back-suction pipe (10), and a lifting mechanism for the back-suction sleeve (7) is arranged on the filling valve body (1).

2. A filling valve with a back-sucking function according to claim 1, characterized in that: A liquid inlet pipe (13) is provided on one side wall of the filling valve body (1), and the liquid inlet pipe (13) is connected to the inside of the filling valve body (1).

3. A filling valve with a back-sucking function according to claim 1, characterized in that: The filling opening mechanism comprises a driving member (5) and a driving rod (6); the driving member (5) is fixedly mounted on the top side of the mounting frame (4); one end of the driving rod (6) is fixedly mounted on the output end of the driving member (5); and the other end of the driving rod (6) is fixedly mounted on the top end of the valve stem (3).

4. A filling valve with a back-sucking function according to claim 1, characterized in that: The two return suction grooves (9) in the return suction cylinder sleeve (7) are symmetrically arranged, and the two return suction grooves (9) are connected to the annular groove (8).

5. A filling valve with a back-sucking function according to claim 4, characterized in that: The lifting mechanism comprises a mounting ring (11) and an electric push rod (12); the mounting ring (11) is fixedly mounted on the top outer surface of the filling valve body (1); two electric push rods (12) are fixedly mounted on the bottom side of the mounting ring (11); and the output ends of the two electric push rods (12) are fixedly mounted on the top side of the suction cylinder sleeve (7).

6. A filling valve with a back-sucking function according to claim 5, characterized in that: The outer side wall of the filling valve body (1) is respectively provided with two limit grooves (14), and limit blocks (15) are movably installed in the two limit grooves (14), and the two limit blocks (15) are fixedly installed on the inner wall of the suction cylinder sleeve (7).

7. A filling valve with a back-sucking function according to claim 6, characterized in that: The valve core (2) is provided with a first sealing ring (16), and the first sealing ring (16) is in sealing contact with the inner wall of the conical liquid outlet end of the filling valve body (1); the conical inner wall of the suction sleeve (7) is provided with a second sealing ring (17), and the second sealing ring (17) is in sealing contact with the outer wall of the conical liquid outlet end of the filling valve body (1).

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