Bottle blowing and air blowing combined valve
By adopting the structure of diaphragm plus main valve core, the problem of plastic chips generated by piston-type one-way valve is solved, and higher product quality control is achieved.
Patent Information
- Application Number
- CN202423019201.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-09
- Publication Date
- 2025-09-26
- Estimated Expiration
- 2034-12-09
AI Technical Summary
In the prior art, the piston-type one-way valve of the blow valve uses an O-ring which contacts and rubs against the valve body, resulting in the generation of plastic chips and affecting product quality.
The structure of diaphragm plus main valve core is adopted. When the diaphragm and the main valve core seal the connection port, the main valve core is inserted into the connection port to avoid friction with the inner wall of the connection port, replacing the traditional main valve core plus O-ring setting.
It reduces the generation of plastic chips, improves product quality control level, and reduces quality risks.
Smart Images
Figure CN223388006U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of valves, in particular to a bottle blowing and air blowing combined valve. Background Art
[0002] The current production process for large-volume injections involves weighing, concentrated and diluted formulation, filtration, injection molding, bottle blowing, filling, sterilization, light inspection, packaging, and finished product. The bottle blowing process includes preform loading, heating, preform removal, intermediate station, preform delivery, bottom mold lowering, mold closing, sealing, air blowing (stretching), mold opening, bottle removal, and bottle delivery. The air blowing (stretching) step is a key quality control point in the entire bottle blowing process, and is divided into a first blow (sealing) and a second blow (stretching). This process generates a significant amount of plastic shavings from friction with the blow valve, posing a significant quality risk. Therefore, reducing friction at the blow valve during large-volume injection production, minimizing the amount of plastic shavings generated, and improving pharmaceutical quality control is imperative.
[0003] In the bottle blowing process, air blowing is divided into one-blow sealing blowing and two-blow stretch rod blowing; the first blow opens two large valves first, and the gas enters through the large valves and enters the sixteen small valves to complete the sealing blowing. After the first blow is completed, the second blow opens two large valves and enters the sixteen small valves to control the stretch rod blowing; the large and small valves of the first and second blows all use piston-type bottle blowing one-way valves, and the pistons on the valve bodies are equipped with O-rings.
[0004] The large and small air-blowing valves are piston-type one-way valves. The piston on the valve body is equipped with an O-ring. When the valve core is operating, the O-ring on the piston contacts the valve body to complete the air path sealing work. The friction between the O-ring and the valve body produces plastic chips. In addition, the friction of the piston-type one-way valve during the blowing process leads to a large amount of plastic chips. This makes the amount of plastic chips in the product difficult to control, posing a certain quality risk. Utility Model Content
[0005] In response to the problems existing in the prior art, the purpose of the present utility model is to provide a bottle blowing and air blowing combination valve to solve the problem that the air blowing valve in the prior art uses a piston-type one-way valve, and the piston is equipped with an O-ring on the valve body. When the O-ring contacts and rubs with the valve body, plastic chips will be generated, and the plastic chips will be blown toward the product, making it difficult to control the amount of plastic chips in the product and affecting the product quality.
[0006] A bottle blowing and air blowing combination valve comprises a main valve seat and a mounting seat; the mounting seat is arranged on the top of the main valve seat, and a second cavity is arranged between the mounting seat and the main valve seat;
[0007] An air blowing channel is provided in the valve seat of the main valve, one end of the air blowing channel is an air inlet, the other end is an air outlet, and a connecting port is provided in the middle of the air blowing channel; a diaphragm is provided on the top of the air blowing channel, the main valve core is provided on the diaphragm, and a first cavity is provided between the top of the diaphragm and the top of the air blowing channel;
[0008] The first cavity is connected to the second cavity, a balancing hole is provided between the second cavity and the air inlet, and a pressure relief hole is provided between the second cavity and the air outlet;
[0009] An electromagnetic assembly is provided on the mounting seat. The electromagnetic assembly controls the air pressure difference between the upper and lower sides of the diaphragm by opening or closing the pressure relief channel, thereby controlling the up and down movement of the diaphragm; the diaphragm can drive the main valve core to move up and down, thereby opening or closing the connection port.
[0010] Furthermore, the upper side of the diaphragm is connected to the top of the main valve seat via a first spring.
[0011] Furthermore, the electromagnetic assembly includes a moving iron core, a coil and a second spring;
[0012] A vertically arranged mounting channel is provided in the mounting seat, a vertically arranged second spring is fixedly installed inside the mounting channel, and a moving iron core is connected to the bottom of the second spring; a coil is provided outside the mounting seat.
[0013] Furthermore, the electromagnetic assembly also includes a static iron core, which is fixedly installed in the installation channel. The bottom of the static iron core is connected to the second spring; the static iron core and the moving iron core magnetically repel each other.
[0014] Furthermore, the top of the installation channel is sealed.
[0015] Furthermore, the balancing channel and the pressure relief channel are arranged on the top of the main valve seat.
[0016] Furthermore, the main valve core is arranged at the bottom of the diaphragm, and the main valve core is adapted to the inner diameter of the connecting port.
[0017] Beneficial effect: The setting of the diaphragm plus the main valve core replaces the setting of the main valve core plus the O-ring in the prior art. When the diaphragm and the main valve core seal the connection port, the main valve core is inserted into the connection port, and the diaphragm seals the connection port on the outside of one end of the connection port to seal the connection port without generating friction with the inner wall of the connection port, thereby reducing the generation of debris. When the main valve core plus the O-ring seals the connection port, the O-ring will extend into the connection port together with the main valve core, and rub against the inner wall of the connection port, resulting in the generation of debris. Based on the above process, it can be seen that the setting of the diaphragm plus the main valve core can significantly reduce the generation of debris and maintain the quality of the product. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the specification. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.
[0019] Figure 1 This is a schematic structural diagram of the air blowing combination valve in a closed state according to an embodiment of the present utility model;
[0020] Figure 2 This is a structural diagram of the blow combination valve in the open state according to an embodiment of the utility model.
[0021] In the figure: 1. Main valve seat; 101. Air inlet; 102. Air outlet; 103. Balance channel; 104. Pressure relief channel; 105. Connection port; 2. Diaphragm; 3. Main valve spool; 4. Mounting seat; 5. Static iron core; 6. Moving iron core; 701. First spring; 702. Second spring; 8. Coil; 901. First cavity; 902. Second cavity; 10. Mounting channel. DETAILED DESCRIPTION
[0022] The technical solutions in the embodiments of the present invention are described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. For ease of explanation, the terms "vertical", "horizontal", "left", "right", "up", "down", "inside", "outside", "bottom", etc. used in this specification to indicate directions or positional relationships are based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or components referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limiting the present application.
[0023] It should be noted that the embodiments of the present invention and the features involved in the embodiments can be combined with each other without conflict. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.
[0024] like Figure 1 and Figure 2The blow bottle air-blowing combination valve shown includes a main valve seat 1 and a mounting seat 4; an air blowing channel is provided in the main valve seat 1; an air inlet 101 is provided at one end of the air blowing channel, and an air outlet 102 is provided at the other end; a connecting port 105 is provided in the middle of the air blowing channel, a diaphragm 2 is provided in the main valve seat 1, and a main valve core 3 is connected to the lower side of the diaphragm 2, and the diaphragm 2 is used to cooperate with the main valve core 3 to control the closing and opening of the connecting port 105; a first cavity 901 is formed between the upper side of the diaphragm 2 and the inner wall of the main valve seat 1; the main valve core 3 is adapted to the inner diameter of the connecting port 105.
[0025] Mounting seat 4 is mounted on top of main valve seat 1. A second cavity 902 is formed between the bottom of mounting seat 4 and the top of main valve seat 1. Second cavity 902 communicates with first cavity 901. Second cavity 902 communicates with air inlet 101 via balancing hole 103, and second cavity 902 communicates with air outlet 102 via pressure relief hole 104. Mounting seat 4 is equipped with an electromagnetic assembly for controlling the opening and closing of pressure relief hole 104. Mounting channel 10 is formed within mounting seat 4, and the top of mounting channel 10 is sealed by a mounting cover (not shown). This cover is conventional and therefore not shown in the figure.
[0026] In this embodiment, a solenoid valve replaces the arrangement of the main valve core 3 plus the O-ring in the prior art by the arrangement of the diaphragm 2 plus the main valve core 3. When the diaphragm 2 and the main valve core 3 seal the connection port 105, the main valve core 3 is inserted into the connection port 105. The diaphragm 2 completely covers the gap formed between the connection port 105 and the main valve core 3 on the outside of one end of the connection port 105, thereby completing the sealing of the connection port 105. The diaphragm 2 is entirely located outside the connection port 105 and does not extend into the connection port 105. The diaphragm 2 and the main valve core 3 are connected to each other, and the O-ring is inserted into the connecting port 105, and the friction occurs between the diaphragm 2 and the main valve core 3, thereby reducing the generation of debris. When the main valve core 3 and the O-ring seal seal the connecting port 105, the O-ring is sleeved on the outside of the main valve core 3. When the connecting port 105 is closed, the O-ring is inserted into the connecting port 105 together with the main valve core 3, and the friction occurs between the diaphragm 2 and the main valve core 3, thereby reducing the generation of debris. Based on the above process, it can be seen that the setting of the diaphragm 2 and the main valve core 3 can significantly reduce the generation of debris and maintain the quality of the product.
[0027] The balancing channel 103 and the pressure relief channel 104 are arranged on the top of the main valve seat 1 on both sides of the connecting port 105 .
[0028] In this embodiment, the positions of the balancing channel 103 and the pressure relief channel 104 are clear, which facilitates manufacturing.
[0029] The electromagnetic assembly includes a static iron core 5, a movable iron core 6, a second spring 702, and a coil 8. A mounting channel 10 is provided within the mounting base 4. The static iron core 5 is fixedly mounted at the top of the mounting channel 10. The second spring 702 is connected to the bottom of the static iron core 5, and the bottom end of the second spring 702 is connected to the movable iron core 6. The movable iron core 6 is used to control the closing and opening of the pressure relief duct 104. The coil 8 is provided outside the mounting base 4.
[0030] In this embodiment, when the coil 8 is energized, a magnetic field is generated, which drives the movable iron core 6 to move upward to open the port of the pressure relief channel 104; when the coil 8 is de-energized, the magnetic field disappears, the static magnet and the movable magnet repel each other, and at the same time, under the elastic force of the second spring 702, the movable iron core 6 moves downward and closes the port of the pressure relief channel 104.
[0031] The upper side of the diaphragm 2 is connected to the top of the main valve seat 1 via a first spring 701 .
[0032] In this embodiment, the first spring 701 is used to assist the diaphragm 2 in returning to its original position, and is used to push the diaphragm 2 to move downward and close the connecting port 105 .
[0033] Working principle: In the power-off state, the main valve core 3 closes the connection port 105, and the moving iron core 6 closes the end opening of the pressure relief channel 104;
[0034] After the coil 8 is energized, the moving iron core 6 moves upward, the end of the pressure relief duct 104 opens, the second cavity 902 is connected to the air outlet 102, and the air flows from the air inlet 101 through the balancing duct 103, the second cavity 902, and the pressure relief duct 104 to the air outlet 102. At this time, the air pressure below the diaphragm 2 is greater than the air pressure above the diaphragm 2. The diaphragm 2 drives the main valve spool 3 to move upward, the connecting port 105 opens, and the air flow at the air inlet 101 can move directly from the connecting port 105 to the air outlet 102;
[0035] After the coil 8 is powered off, under the dual action of the second spring 702 and the static iron core 5, the moving iron core 6 moves downward to close the pressure relief channel 104. At this time, the air pressure below the diaphragm 2 is less than the air pressure above it. At the same time, under the action of the first spring 701, the diaphragm 2 moves downward, and the main valve spool 3 moves downward to close the connecting port 105, and the air flow in the blowing channel stops moving.
[0036] Although preferred embodiments of the present invention have been described, those skilled in the art may make additional changes and modifications to these embodiments once they are aware of the basic inventive concepts. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention. Clearly, those skilled in the art may make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, to the extent such changes and modifications fall within the scope of the claims and their equivalents, the present invention is intended to encompass such changes and modifications.
Claims
1. A bottle blowing air blowing combination valve, characterized in that: It includes a main valve seat and a mounting seat; the mounting seat is arranged on the top of the main valve seat, and a second cavity is arranged between the mounting seat and the main valve seat; An air blowing channel is provided in the valve seat of the main valve, one end of the air blowing channel is an air inlet, the other end is an air outlet, and a connecting port is provided in the middle of the air blowing channel; a diaphragm is provided on the top of the air blowing channel, the main valve core is provided on the diaphragm, and a first cavity is provided between the top of the diaphragm and the top of the air blowing channel; The first cavity is connected to the second cavity, a balancing hole is provided between the second cavity and the air inlet, and a pressure relief hole is provided between the second cavity and the air outlet; An electromagnetic assembly is provided on the mounting seat. The electromagnetic assembly controls the air pressure difference between the upper and lower sides of the diaphragm by opening or closing the pressure relief channel, thereby controlling the up and down movement of the diaphragm; the diaphragm can drive the main valve core to move up and down, thereby opening or closing the connection port.
2. The bottle blowing and air blowing combination valve according to claim 1, characterized in that: The upper side of the diaphragm is connected to the top of the main valve seat via a first spring.
3. The bottle blowing and air blowing combined valve according to claim 2, characterized in that: The electromagnetic assembly includes a moving iron core, a coil and a second spring; The mounting seat is provided with a mounting channel, a second spring is fixedly installed inside the mounting channel, and a moving iron core is connected to the bottom of the second spring; a coil is provided outside the mounting seat.
4. The bottle blowing and air blowing combined valve according to claim 3, characterized in that: The electromagnetic assembly further includes a static iron core, which is fixedly installed in the installation channel. The bottom of the static iron core is connected to the second spring; the static iron core and the moving iron core magnetically repel each other.
5. A bottle blowing and air blowing combined valve according to claim 3 or 4, characterized in that: The top of the installation channel is sealed.
6. The bottle blowing and air blowing combined valve according to claim 1, characterized in that: The balancing channel and the pressure relief channel are arranged on the top of the main valve seat.
7. The bottle blowing and air blowing combined valve according to claim 1, characterized in that: The main valve core is arranged at the bottom of the diaphragm, and the main valve core is adapted to the inner diameter of the connecting port.