Plunger filling valve and filling device

Abstract

The utility model relates to the technical field of filling devices, and specifically provides a plunger-type filling valve and a filling device, which can achieve full cleaning of the plunger-type filling valve and improve the cleaning effect and cleaning efficiency of the plunger-type filling valve. In the technical solution of the utility model, a plunger-type filling valve is provided, including a piston cylinder and a piston, and the top end of the piston cylinder is provided with an open portion; the piston is arranged in the piston cylinder, the outer diameter of the piston matches the inner diameter of the piston cylinder, and the piston can enter and exit the piston cylinder through the open portion.

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 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-type filling valve is provided, including a piston cylinder, a piston, a rotary valve and a lifting device, wherein an open portion is provided at the top end of the piston cylinder; the piston is arranged in the piston cylinder, the outer diameter of the piston matches the inner diameter of the piston cylinder, and the piston can enter and exit the piston cylinder through the open portion; the piston cylinder is connected to an external material cylinder through a rotary valve; and the lifting device is slidably connected to the piston.

[0007] According to the technical solution of the utility model, the piston cylinder in the plunger filling valve is not an integrally closed cylindrical structure, and the top of the piston cylinder is configured as an open part. The outer diameter of the piston matches the inner diameter of the piston cylinder. When the plunger filling valve is filling, the piston can be tightly attached to the inner wall of the piston cylinder to achieve sealing, thereby ensuring the filling pressure in the piston cylinder. When the plunger filling valve is cleaned in place (CIP), the piston can be directly pulled out of the piston cylinder from the open part through the lifting device, and the piston can be cleaned separately. All sides of the piston 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 invention, the piston in the plunger filling valve includes a piston head and a piston rod, the piston head is arranged at one end of the piston cylinder away from the open part, and the inner diameter of the piston head matches the inner diameter of the piston cylinder; 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 head can be pulled out of the piston cylinder by the piston rod.

[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 plunger filling valve further includes a cleaning device, which is arranged above the open portion and is used for cleaning the piston and / or the sealing member taken out from the open portion.

[0013] According to the technical solution of the utility model, the cleaning device can clean the piston pulled out of the piston cylinder, thereby improving the cleaning effect and cleaning efficiency of the plunger type filling valve.

[0014] Optionally, 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 piston cylinder, the second port is connected to the external material cylinder, and the third port is connected to the external outlet; the first port, the second port and the third port can be connected in pairs, and the rotary valve core is rotated to switch the connection state between the first port, the second port and the third port.

[0015] 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 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.

[0016] 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.

[0017] According to the technical solution of the present invention, 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

[0018] Figure 1 It is a schematic diagram of a plunger type filling valve provided in the prior art.

[0019] Figure 2 It is a schematic diagram of a plunger type filling valve provided in an embodiment of the utility model.

[0020] Figure 3 It is a schematic diagram of cleaning a plunger-type filling valve provided in an embodiment of the utility model.

[0021] Figure 4 It is a schematic diagram of a filling device provided in an embodiment of the utility model.

[0022] Explanation of the accompanying drawings: 101-piston cylinder, 102-piston, 103-seal, 100-filling device, 200-material cylinder, 1-plunger filling valve, 2-piston cylinder, 20-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, 7-cleaning device. DETAILED DESCRIPTION

[0023] 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.

[0024] Figure 2 It is a schematic diagram of a plunger type filling valve provided in an embodiment of the utility model.

[0025] like Figure 2As 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.

[0026] In this embodiment, the piston cylinder 2 is in a cylindrical shape as a whole, and an open portion 20 is provided on the top surface. When the plunger filling valve 1 is used for material filling, the material is filled into the inner cavity of the piston cylinder 2 .

[0027] 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 of the piston cylinder 2, and the piston 3 is used to seal the side of the piston cylinder 2 close to the open portion 20. In other words, the outer diameter of the piston 3 is slightly smaller than the inner diameter of the piston cylinder 2, so that the gap between the piston 3 and the piston cylinder 2 is as small as possible, so as to ensure the filling pressure when the piston 3 is pressed down and the material will not overflow from the open portion 20.

[0028] In this embodiment, when the plunger filling valve 1 is cleaned in place (CIP), the piston 3 can be directly pulled out of the piston cylinder 2 from the open portion 20, and then a cleaning liquid can be poured into the piston cylinder 2 to fully clean the inside of the piston cylinder 2; at the same time, the piston 3 above the pulled-out piston cylinder 2 is separately rinsed by the cleaning device 7, and each side of the piston 3 can be fully contacted with the cleaning liquid for cleaning, thereby eliminating cleaning dead corners and improving the cleaning effect.

[0029] In the embodiment of the present utility model, the piston 3 includes a piston head 31 and a piston rod 32. The piston head 31 is in a thick cylindrical shape, and the outer diameter of the piston head 31 matches the inner diameter of the piston cylinder 2. 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 length direction H in the piston cylinder 2.

[0030] 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 311, and the sealing member 4 is in a circular ring shape that fits in the sealing groove 311. The sealing member 4 is installed in the sealing groove 311. When the piston head 31 is placed in 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, and avoids 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.

[0031] Figure 3This is a schematic diagram of cleaning a plunger-type filling valve provided in an embodiment of the utility model.

[0032] like Figure 3 As shown, in the embodiment of the present utility model, the plunger type filling valve 1 further includes a rotary valve 5 , a lifting device 6 and a cleaning device 7 .

[0033] The piston cylinder 2 of the plunger filling valve 1 is connected to the 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 20, 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.

[0034] 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 piston cylinder 2; the second port 52 is connected to the 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.

[0035] 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 material cylinder 200, and the cleaning liquid in the material 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.

[0036] 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.

[0037] 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 pull the piston 3 out of the piston cylinder 2 for cleaning.

[0038] refer to Figure 3In an embodiment of the present utility model, a cleaning device 7 is disposed above the open portion 20 for cleaning the piston 3 and / or the seal 4 taken out from the open portion 20 .

[0039] In an embodiment of the present utility model, the cleaning device 7 can be an independent device such as a water gun, a nozzle, etc., which is arranged on one side of the material cylinder 200 through an external device. The cleaning device 7 can also be a device integrated with the material cylinder 200 and connected to the material cylinder 200; there is no limitation here.

[0040] 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 material cylinder 200, and the material cylinder 200 is filled with cleaning liquid.

[0041] First, the rotary valve core 54 of the rotary valve 5 is adjusted to connect the first port 51 with the second port 52, and the lifting device 6 controls the piston 3 to rise to the open portion 20, and the cleaning liquid in the 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 is only filled in the piston cylinder 2, and the inner wall of the piston cylinder 2 and the end face of the piston head 31 facing the rotary valve 5 are rinsed and cleaned.

[0042] Then, the rotary valve core 54 of the rotary valve 5 is adjusted to connect the first port 51 with the third port 53, and the lifting device 6 controls the piston 3 to descend. The cleaning liquid 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.

[0043] Next, the rotary valve core 54 of the rotary valve 5 is adjusted again to connect the first port 51 with the second port 52, and the lifting device 6 controls the piston 3 to rise and escape from the piston cylinder 2 through the open portion 20. At this time, the cleaning liquid is poured into the piston cylinder 2 again, and the cleaning liquid can immerse the entire piston cylinder 2, and clean the inner wall that originally abuts against the piston 3. The cleaning liquid after cleaning can flow out through the open portion 20 on the top surface of the piston cylinder 2. At the same time, the lifting device 6 controls the piston 3 to be set above the piston cylinder 2, and the cleaning device 7 sprays and rinses the piston 3 and the sealing member 4 connected to the piston cylinder 2 at multiple angles.

[0044] 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 bottom of the piston cylinder 2 where the cleaning filling material is mainly accumulated and the side of the piston head 31, the seal 4, etc. where the cleaning filling material is 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.

[0045] Figure 4 It is a schematic diagram of a filling device provided in an embodiment of the utility model.

[0046] like Figure 4 As 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 filling device 100 further comprises a plurality of lifting devices 6, which 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.

[0047] 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. The pistons 3 of the multiple plunger-type filling valves 1 can be cleaned by the fixed cleaning device 7, thereby improving the cleaning effect and cleaning efficiency of the multiple plunger-type filling valves 1 in the filling device 100.

[0048] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A plunger filling valve, characterized in that: include A piston cylinder, wherein the top end of the piston cylinder is provided with an open portion; A piston is disposed in the piston cylinder, the outer diameter of the piston matches the inner diameter of the piston cylinder, and the piston can enter and exit the piston cylinder through the open portion; 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 is arranged at one end of the piston cylinder away from the open portion, and the outer diameter of the piston head matches the inner diameter of the piston cylinder; 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 3, characterized in that: It also includes a cleaning device, which is arranged above the open part and is used for cleaning the piston and / or the sealing member taken out from the open part.

5. The plunger type filling valve according to claim 1, characterized in that: The rotary valve comprises: A first port connected to 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.

6. A filling device, characterized in that: The filling device comprises the plunger-type filling valve as described in any one of claims 1 to 5, 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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