Plunger type filling valve and filling device

Abstract

The utility model relates to the technical field of filling devices, in particular to a plunger type filling valve and a filling device, which can realize no-dead-corner cleaning inside the plunger type filling valve and improve the cleaning effect and the cleaning efficiency of the plunger type filling valve at the same time. According to the technical scheme, the plunger type filling valve comprises a piston cylinder and a piston, the piston cylinder comprises a first section and a second section which are connected, the inner diameter of the first section is larger than that of the second section, an opening part is formed in the top face of the first section, and liquid in the piston cylinder can flow out through the opening part; the piston is arranged in the piston cylinder, and the outer diameter of the piston is matched with the inner diameter of the piston cylinder.

Description

Technical Field

[0001] The utility model relates to the technical field of filling devices, in particular to a plunger type filling valve and a filling device. Background Art

[0002] The plunger filling valve is a common filling equipment, which is simple to control and easy to operate, and can achieve efficient quantitative filling operations. In particular, the plunger filling valve is suitable for filling more viscous materials. After filling more viscous materials, the plunger filling valve needs to be cleaned.

[0003] In the prior art, filling equipment is generally cleaned by cleaning in place (CIP). CIP cleaning systems are widely used in food and beverage production enterprises with a high degree of mechanization, such as beverages, dairy products, juices, pulp, jams, and wines.

[0004] However, when performing in-place cleaning (CIP) on the plunger filling valve, a technical problem arises that the plunger filling valve cannot be fully cleaned. Figure 1 As shown, since the piston cylinder 101 and the piston 102 of the plunger filling valve fit tightly together and are sealed with a seal 103, when cleaning liquid is poured into the piston cylinder 101 for cleaning, there are sanitary dead corners in the portion between the piston cylinder 101 and the piston 102 and in the abutting portions between the seal 103 and the piston cylinder 101 and the piston 102, which are difficult to clean effectively. Summary of the invention

[0005] In view of the above problems, the utility model provides a plunger-type filling valve and a filling device, which can achieve full cleaning of the inside of the plunger-type filling valve and improve the cleaning effect and cleaning efficiency of the plunger-type filling valve.

[0006] In the technical solution of the utility model, a plunger filling valve is provided, including a piston cylinder, a piston, a rotary valve and a lifting device. The piston cylinder includes a first section and a second section connected to each other. The inner diameter of the first section is larger than the inner diameter of the second section. The top surface of the piston cylinder is provided with an open portion, and the liquid in the piston cylinder can flow out through the open portion. The piston is arranged in the piston cylinder, and the outer diameter of the piston matches the inner diameter of the second section. The piston cylinder is connected to an external material cylinder through a rotary valve; the lifting device is slidably connected to the piston.

[0007] According to the technical solution of the utility model, when the plunger filling valve is cleaned in place (CIP), the piston can be moved to the first section along the length direction of the piston cylinder by a lifting device. The inner diameter of the first section is larger than the outer diameter of the piston. The cleaning liquid in the piston cylinder can be poured into the first section of the piston cylinder through the gap between the inner wall of the first section and the piston. An open portion is provided on the top surface of the piston cylinder. After the cleaning liquid flows from the second section to the first section inside the piston cylinder, it flows out through the open portion on the top surface, so that the side surface of the piston and the end surface of the piston close to the first section can be fully contacted with the cleaning liquid for cleaning, thereby eliminating cleaning dead corners and improving the cleaning effect.

[0008] Optionally, in the technical solution of the present utility model, the piston in the plunger filling valve includes a piston head and a piston rod, the outer diameter of the piston head matches the inner diameter of the second section, and the piston rod is connected to the piston head.

[0009] According to the technical solution of the utility model, the piston rod can drive the piston head to move up and down in the piston cylinder. When the plunger filling valve is cleaned, the piston rod can pull the piston head to the first section to introduce the cleaning liquid into the first section.

[0010] Optionally, in the technical solution of the present invention, a sealing groove surrounding the piston head is provided at one end of the piston head away from the piston rod, a sealing member is provided in the sealing groove, and the sealing member can abut between the sealing groove and the inner wall of the piston cylinder.

[0011] According to the technical solution of the utility model, the filling pressure of the plunger type filling valve can be ensured by arranging a sealing member between the piston head and the inner wall of the piston cylinder.

[0012] Optionally, in the technical solution of the present utility model, the length of the first section in the piston cylinder is greater than the length of the piston head.

[0013] According to the technical solution of the utility model, the piston rod can drive the piston head to move up and down along the length direction of the piston cylinder. The length of the first section in the piston cylinder is greater than the length of the piston head, that is, the piston head can be completely accommodated in the first section of the piston cylinder, so that the cleaning liquid can be poured into the first section of the piston cylinder through the gap between the inner wall of the first section and the piston head for cleaning.

[0014] Optionally, in the technical solution of the present utility model, the size of the open portion is larger than the size of the piston head.

[0015] According to the technical solution of the utility model, the cleaning liquid entering the piston cylinder from the second section of the piston cylinder can be directly flushed out from the open portion of the top surface of the piston cylinder. The size of the open portion is large, and the efficiency of cleaning liquid discharge is also high.

[0016] Furthermore, in the technical solution of the utility model, the rotary valve includes a first port, a second port, a third port and a rotary valve core. The first port is connected to the second section of the piston cylinder; the second port is connected to the external material cylinder; the third port is connected to the external outlet; the first port, the second port and the third port can be connected in pairs; the rotary valve core is rotated to switch the connection state of the first port, the second port and the third port.

[0017] According to the technical solution of the utility model, rotating the valve core can connect the first port with the second port, connect the piston cylinder with the external material cylinder, and allow the cleaning liquid to enter the piston cylinder; or connect the first port with the third port, connect the piston cylinder with the external outlet, and allow the cleaning liquid to be discharged from the piston cylinder.

[0018] In the technical solution of the utility model, a filling device is also provided, comprising the above-mentioned plunger filling valve. The filling device also comprises a material cylinder, and a plurality of plunger filling valves are arranged outside the material cylinder.

[0019] According to the technical solution of the utility model, the plunger-type filling valve in the filling device can be conveniently cleaned on site, which effectively improves the cleaning effect, saves cleaning time, and thus improves the cleaning efficiency of the filling device. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of a plunger type filling valve provided in the prior art.

[0021] Figure 2 It is a schematic diagram of a plunger type filling valve provided in an embodiment of the utility model.

[0022] Figure 3 It is a schematic diagram of cleaning a plunger-type filling valve provided in an embodiment of the utility model.

[0023] Figure 4 It is a schematic diagram of cleaning a plunger-type filling valve provided in an embodiment of the utility model.

[0024] Figure 5 It is a schematic diagram of cleaning a plunger-type filling valve provided in an embodiment of the utility model.

[0025] Figure 6 It is a schematic diagram of a filling device provided in an embodiment of the utility model.

[0026] Explanation of the accompanying drawings: 101-piston cylinder, 102-piston, 103-seal, 200-material cylinder, 1-plunger filling valve, 2-piston cylinder, 21-first section, 22-second section, 23-opening part, 3-piston, 31-piston head, 311-sealing groove, 32-piston rod, 4-seal, 5-rotary valve, 51-first port, 52-second port, 53-third port, 54-rotary valve core, 6-lifting device. DETAILED DESCRIPTION

[0027] 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.

[0028] Figure 2 It is a schematic diagram of a plunger type filling valve provided in an embodiment of the utility model.

[0029] like Figure 2 As shown, in the embodiment of the utility model, a plunger filling valve 1 is provided, which can be used for filling relatively viscous materials. The plunger filling valve 1 includes a piston cylinder 2 and a piston 3, and the piston 3 can move up and down along the length direction H of the piston cylinder 2 to fill the material.

[0030] In this embodiment, the piston cylinder 2 is cylindrical as a whole. When the plunger filling valve 1 is used for material filling, the material is filled into the inner cavity of the piston cylinder 2. The piston cylinder 2 includes a first section 21 and a second section 22 connected to each other. The inner diameter D1 of the first section 21 is larger than the inner diameter D2 of the second section 22. An open portion 23 is provided on the top surface of the piston cylinder 2, and the liquid in the piston cylinder 2 can overflow through the open portion 23.

[0031] In this embodiment, the piston 3 is disposed in the piston cylinder 2, and is used to press the material in the piston cylinder 2 out for filling. The outer diameter of the piston 3 matches the inner diameter D2 of the second section 22 of the piston cylinder 2. In other words, the outer diameter of the piston 3 is slightly smaller than the inner diameter D2 of the second section 22 of the piston cylinder 2, so that the gap between the piston 3 and the piston cylinder 2 is as small as possible to ensure the filling pressure when the piston 3 is pressed down and the material will not overflow from the open part 23. The piston 3 includes a piston head 31 and a piston rod 32. The piston head 31 is in a thick cylindrical shape. The outer diameter of the piston head 31 matches the inner diameter D2 of the second section 22. The piston rod 32 is a thin rod fixedly connected to the piston head 31. The piston rod 32 can extend out of the piston cylinder 2. During filling or cleaning operations, the piston rod 32 can drive the piston head 31 to move up and down in the piston cylinder 2.

[0032] Preferably, in this embodiment, the size of the open portion 23 is designed to be larger than the size of the piston head 31, and the piston rod 32 can drive the piston head 31 to be removed from the piston cylinder 2. The cleaning liquid in the piston cylinder 2 can be directly flushed out from the open portion 23 on the top surface of the piston cylinder 2. The size of the open portion 23 is larger, and the efficiency of cleaning liquid discharge is also higher.

[0033] Preferably, in the embodiment of the present utility model, a sealing groove 311 is provided at one end of the piston head 31 away from the piston rod 32, and the sealing groove 311 is arranged in a circular ring shape around the piston head 31. A sealing member 4 is arranged in the sealing groove 32, and the sealing member 4 is in a circular ring shape that fits with the sealing groove 311. The sealing member 4 is installed in the sealing groove 311. When the piston head 31 is placed in the second section 22 of the piston cylinder 2, the sealing member 4 abuts between the sealing groove 311 and the inner wall of the piston cylinder 2, and can fill the gap between the piston head 31 and the piston cylinder 2, so as to avoid as much as possible the leakage of materials upward through the gap between the piston head 31 and the piston cylinder 2 when the piston 3 is pressed down for filling, thereby ensuring the filling pressure of the plunger filling valve 1.

[0034] Further, in an embodiment of the present invention, along the length direction H of the piston cylinder 2, the length L1 of the first section 21 of the piston cylinder 2 is greater than the length L2 of the piston head 31. And the inner diameter D1 of the first section 21 of the piston cylinder 2 is greater than the inner diameter D2 of the second section 22, and the outer diameter of the piston 3 matches the inner diameter D2 of the second section 22 of the piston cylinder 2, then the inner diameter D1 of the first section 21 of the piston cylinder 2 is greater than the outer diameter of the piston head 31. In other words, the radial or axial dimensions of the first section 21 of the piston cylinder 2 are greater than the dimensions of the piston head 31. The piston rod 32 drives the piston head 31 to move up and down along the length direction H of the piston cylinder 2, and can pull the piston head 31 up to be completely accommodated in the first section 21 of the piston cylinder 2 (such as Figure 1 As shown), the cleaning liquid can be poured into the first section 21 of the piston cylinder 2 through the gap between the inner wall of the first section 21 and the piston head 31 for cleaning.

[0035] Figure 3 It is a schematic diagram of cleaning a plunger-type filling valve provided in an embodiment of the utility model.

[0036] like Figure 3 As shown, in the embodiment of the present utility model, the plunger filling valve 1 further includes a rotary valve 5 and a lifting device 6, and the piston cylinder 2 of the plunger filling valve 1 is connected to the external material cylinder 200 through the rotary valve 5. The liquid inlet (not shown) of the piston cylinder 2 is opened at one end of the piston cylinder 2 away from the open portion 23, and the filling material and / or the cleaning liquid can flow into the piston cylinder 2 of the plunger filling valve 1 or be discharged from the piston cylinder 2 of the plunger filling valve 1 through the rotary valve 5.

[0037] Further, in the embodiment of the present utility model, the rotary valve 5 of the plunger filling valve 1 includes a first port 51, a second port 52, a third port 53 and a rotary valve core 54. The first port 51, the second port 52, and the third port 53 are inlets and outlets arranged in different directions, the first port 51 is connected to the second section 22 of the piston cylinder 2; the second port 52 is connected to the external material cylinder 200; the third port 53 is connected to the external outlet; the first port 51, the second port 52, and the third port 53 can be connected in pairs; rotating the rotary valve core 54 can switch the connection state between the first port 51, the second port 52, and the third port 53.

[0038] For example, rotating the valve core 54 can make the first port 51 communicate with the second port 52, so that the piston cylinder 2 is connected to the external cylinder 200, and the cleaning liquid in the external cylinder 200 can enter the piston cylinder 2 through the second port 52, the first port 51 and the liquid inlet not shown; or rotating the valve core 54 can make the first port 51 communicate with the third port 53, so that the piston cylinder 2 is connected to the external outlet, and the cleaning liquid in the piston cylinder 2 can be discharged from the piston cylinder 2 through the first port 51 and the third port 53.

[0039] refer to Figure 3 In an embodiment of the present utility model, the lifting device 6 is arranged outside the material cylinder 200 along the height direction, that is, the length direction H of the piston cylinder 2, and the piston rod 32 of the piston 3 is slidably connected to the lifting device 6.

[0040] In this embodiment, the lifting device 6 is configured as a slide rail structure, and the piston rod 32 can move up and down along the slide rail, driving the piston 3 to move up and down along the height direction, i.e., the length direction H of the piston cylinder 2. During the filling operation, the lifting device 6 can drive the piston 3 to press down, and press the material in the piston cylinder 2 to perform the filling operation; during the cleaning operation, the lifting device 6 can drive the piston 3 to rise and fall in the piston cylinder 2. In other embodiments of the present invention, the lifting device 6 can also be a lifting mechanism in different forms such as a cylinder, a screw rod, and a motor drive, which is not limited here.

[0041] Figure 3-5 It is a schematic diagram of cleaning a plunger-type filling valve provided in an embodiment of the utility model.

[0042] In the embodiment of the present utility model, when the plunger filling valve 1 is cleaned in place (CIP), the second port 52 of the rotary valve 5 is connected to the external cylinder 200 , and the external cylinder 200 contains a cleaning liquid.

[0043] First, if Figure 3As shown, adjusting the rotary valve core 54 of the rotary valve 5 can make the first port 51 communicate with the second port 52, control the piston 3 to rise to the top of the second section 22, and the cleaning liquid in the external cylinder 200 enters the piston cylinder 2 through the second port 52, the first port 51, and the liquid inlet at the bottom of the piston cylinder 2 connected to the first port 51. At this time, due to the setting of the sealing member 4, the cleaning liquid only fills the second section 22 of the piston cylinder 2, and the second section 22 of the piston cylinder 2 and the end surface of the piston head 31 facing the rotary valve 5 are rinsed and cleaned.

[0044] Then, if Figure 4 As shown, by adjusting the rotary valve core 54 of the rotary valve 5, the first port 51 can be connected with the third port 53 (rotated 90°), and the piston 3 can be controlled to descend. The cleaning liquid that has cleaned the second section 22 in the piston cylinder 2 can be completely discharged from the piston cylinder 2 through the liquid inlet at the bottom of the piston cylinder 2, and then discharged through the first port 51 and the third port 53.

[0045] Then, if Figure 5 As shown, adjusting the rotary valve core 54 of the rotary valve 5 again can make the first port 51 communicate with the second port 52 (rotate 90°), control the piston 3 to rise so that the piston head 31 enters the first section 21, and the new cleaning liquid in the external material cylinder 200 enters the piston cylinder 2 from the liquid inlet at the bottom of the piston cylinder 2, so as to prevent the cleaning liquid with a lot of material residues that has been used to clean the second section 22 at the bottom of the piston cylinder 2 from contaminating the relatively clean first section 21 and the piston head 31 therein. At this time, the cleaning liquid is poured into the first section 21 of the piston cylinder 2 from the gap between the inner wall of the first section 21 and the piston head 31, and the cleaning liquid can immerse the entire piston head 31, and the side of the piston head 31 and the seal 4 installed in the piston head 31 can be fully contacted with the cleaning liquid for cleaning, and the cleaning liquid after cleaning can flow out through the open part 23 on the top surface of the piston cylinder 2.

[0046] In the embodiment of the utility model, the plunger-type filling valve 1 can effectively clean the traditional cleaning dead corners such as the side of the piston head 31, the seal 4, etc., and improve the cleaning effect. At the same time, the second section 22 and other positions where the cleaning filling materials are mainly accumulated and the side of the piston head 31 and the seal 4 and other positions where the cleaning filling materials are slightly contaminated can be cleaned in batches to avoid contamination. Moreover, the overall plunger-type filling valve 1 has a simple structure and is easy to clean, which can effectively save cleaning time and improve cleaning efficiency.

[0047] Figure 6 It is a schematic diagram of a filling device provided in an embodiment of the utility model.

[0048] like Figure 6As shown, in an embodiment of the present utility model, a filling device 100 is further provided, comprising a material cylinder 200 and a plurality of plunger-type filling valves 1, wherein the plurality of plunger-type filling valves 1 are arranged around the outer surface of the material cylinder 200. The plurality of lifting devices 6 in the plurality of plunger-type filling valves 1 are arranged outside the material cylinder 200 along the height direction H, and the piston rods 32 of the pistons 3 in the plurality of plunger-type filling valves 1 are slidably connected to the respective lifting devices 6.

[0049] When the filling device 100 is running, the material cylinder 200 can rotate along its circumferential direction, thereby driving the multiple plunger-type filling valves 1 outside the material cylinder 200 to rotate, and the pistons 3 of the multiple plunger-type filling valves 1 can be cleaned at the same time, thereby improving the cleaning effect and cleaning efficiency of the multiple plunger-type filling valves 1 in the filling device 100.

[0050] According to the technical solution of the utility model, the filling valve in the filling device can be directly cleaned on the spot without disassembly, which effectively improves the cleaning effect and saves cleaning time, thereby improving the operating efficiency of the filling device. The above is only a preferred embodiment of the utility model and is not intended to limit the utility model. Any modification, equivalent replacement and improvement made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A plunger filling valve, characterized in that: include: The piston cylinder comprises a first section and a second section connected to each other, the inner diameter of the first section is larger than the inner diameter of the second section, and the top surface of the piston cylinder is provided with an open portion, through which the liquid in the piston cylinder can flow out; a piston, disposed in the piston cylinder, wherein the outer diameter of the piston matches the inner diameter of the second section; A rotary valve, through which the piston cylinder is connected to an external material cylinder; A lifting device is slidably connected to the piston.

2. The plunger filling valve according to claim 1, characterized in that: The piston comprises: a piston head, wherein the outer diameter of the piston head matches the inner diameter of the second section; A piston rod is connected to the piston head.

3. The plunger filling valve according to claim 2, characterized in that: A sealing groove surrounding the piston head is provided at one end of the piston head away from the piston rod. A sealing member is provided in the sealing groove. The sealing member can abut between the sealing groove and the inner wall of the piston cylinder.

4. The plunger filling valve according to claim 2, characterized in that: The length of the first section is greater than the length of the piston head.

5. The plunger filling valve according to claim 2, characterized in that: The size of the open portion is larger than that of the piston head.

6. The plunger filling valve according to claim 1, characterized in that: The rotary valve comprises: A first port connected to the second section of the piston cylinder; The second port is connected to the external material cylinder; The third port is connected to the external outlet; The first opening, the second opening and the third opening can be connected in pairs; The valve core is rotated to switch the communication state among the first port, the second port and the third port.

7. A filling device, characterized in that: The filling device comprises the plunger-type filling valve as described in any one of claims 1 to 6, and further comprises a material cylinder, wherein a plurality of the plunger-type filling valves are arranged around the outside of the material cylinder.

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