Vacuum tank of extruder

Abstract

The utility model relates to a vacuum tank of an extruder. The vacuum tank consists of a bottom frame and a tank body, an air inlet and an air outlet are formed in the top of the tank body close to the front end and the rear end respectively, a drain outlet is formed in the bottom, an access hole communicated with the inside and the outside is formed in the center of the front surface of the tank body, a shield is arranged on the access hole, and a top plate elastically connected with the shield is arranged on the back surface of the shield; an air outlet pipe is arranged in the tank body, one end of the air outlet pipe is communicated with the lower end of the air outlet in the tank body, an integration head is arranged at the other end of the air outlet pipe, an integration cavity is formed in the integration head, and a connector communicated with the inside and the outside is formed in the end, corresponding to the top plate, of the integration head; one end of the air filter element far away from the connector abuts against the end face of the top plate. According to the vacuum tank of the extruder, moisture and fine powder impurities are filtered through the air filter elements, the filtering effect is good, the stability is good, the cleaning convenience of the vacuum tank is improved, the service life of the vacuum tank is prolonged, and the product processing quality is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of plastic extruder processing especially relates to an extruder vacuum tank. BACKGROUND

[0002] In the plastic extrusion forming equipment, the plastic extruder is usually called the main machine, and the plastic extrusion forming machine matched with it is called the auxiliary machine, the plastic extruder can be matched with various plastic forming auxiliary machines such as pipe material and granulation to form various plastic extrusion forming production lines to produce various plastic products.

[0003] In the plastic extrusion processing, the main machine of the extruder needs to be vacuumized, because there is moisture and fine powder impurity in the raw material, if not excluded, it will have influence on the appearance and performance of the product, the vacuum of the extruder is to forcibly exclude volatile matter by external force to improve the compactness of the product.

[0004] At present, the vacuumization of the main machine of the plastic extruder is mainly carried out by the vacuum tank connected with the vacuum pump and the main machine of the extruder, the filter bag is arranged in the vacuum tank and is used for filtering moisture and fine powder impurity, and prevents material from being brought to the vacuum pump to damage the vacuum pump, simultaneously has the gas-liquid separation function and can prevent moisture and fine powder impurity from backflowing to achieve the purpose of stabilizing the vacuum degree.

[0005] However, the filtering effect of the existing vacuum tank filter bag for the extruder is general, and the disassembly and assembly are inconvenient, the maintenance is inconvenient after the equipment is stopped, the production efficiency is affected, and after filtering, the filter bag is drooping due to the accumulated filter material, which affects the filtering effect and the vacuumizing effect of the vacuum pump. SUMMARY

[0006] The technical problem to be solved by the utility model is to provide an extruder vacuum tank with good filtering effect and convenient maintenance.

[0007] In order to solve the above technical problem, the utility model is realized by the following technical scheme:

[0008] The extruder vacuum tank is composed of a base frame and a tank body, the tank body is fixed on the top of the base frame, the top of the tank body is provided with an air inlet and an air outlet near the front and rear ends respectively, and the bottom is provided with a sewage outlet, the front center of the tank body is provided with an inspection opening connected with the inside and outside, a detachable shield is arranged on the inspection opening, the back of the shield is provided with a top plate elastically connected therewith, and the top plate is located in the tank body near the inspection opening; an air outlet pipe in an L-shaped structure is arranged in the tank body, the air outlet pipe is fixed in the tank body, one end of the air outlet pipe is communicated with the lower end of the air outlet on the tank body, and the other end of the air outlet pipe is provided with an integrated head, the integrated head corresponds to the front and rear of the top plate, the integrated head has an integrated cavity in the inside, the air outlet pipe is communicated with the integrated cavity, one end of the integrated head corresponding to the top plate is provided with an interface connected with the inside and outside, an air filter element is mounted on the interface, and the end of the air filter element away from the interface is in abutment with the end face of the top plate.

[0009] Further, the back center of the shield is provided with a joint integrated therewith, a sleeve fixedly connected with the joint is arranged on the joint, an inner cavity with an open end is arranged in the inside of the sleeve, the sleeve is sleeved on the joint through the end opening thereof, a guide hole communicated with the inner cavity is arranged on the other end center of the sleeve corresponding to the joint, a jack slidably fitted in the front and rear of the guide hole is inserted into the guide hole, one end of the jack is fixedly connected with the center of the end face of the top plate, and the other end of the jack is located in the inner cavity, a stop block fixedly connected with the jack is arranged on the end of the jack located in the inner cavity, and a spring is arranged in the inner cavity between the stop block and the joint.

[0010] Further, an observation opening is arranged on the side of the tank body, a cover plate in sleeved fit with the observation opening is arranged on the observation opening, and the cover plate and the observation opening are fixedly connected together through a clamp.

[0011] Further, the sewage outlet is located at the center of the bottom of the tank body and protrudes downward, a sewage cover fixedly connected with the sewage outlet is arranged on the outside of the sewage outlet, and a pipe joint communicated with the inside of the tank body is arranged at the center of the bottom of the sewage cover.

[0012] Further, a plurality of groups of quick pressure screws are arranged in a circular array with the center of the end face of the outer side of the inspection opening as the center, a plurality of U-shaped clamping blocks corresponding in number and position to the quick pressure screws are arranged in an array along the circumference of the outer side of the shield, the quick pressure screws can be clamped together with the U-shaped clamping blocks, and the shield is fixed on the inspection opening.

[0013] Further, the interface has a plurality of air filter elements.

[0014] Further, the diameter of the inspection opening is greater than the diameter of the top plate.

[0015] Compared with the prior art, the extruder vacuum tank has the advantages that: the moisture and fine powder impurities in the extruder vacuum tank are filtered by the plurality of air filter elements, the filtering effect is good, the air filter elements are convenient to disassemble and assemble, the inside of the tank body can be conveniently maintained through the maintenance opening, the operation is simple, the inside of the tank body can be observed through the observation opening, the equipment downtime is reduced, the maintenance efficiency is improved, the stability is good, the fine powder impurities drawn during vacuumizing can be effectively filtered, the calcium-zinc stabilizer raw material in the plastic product is prevented from reacting with the calcium-zinc stabilizer raw material, the cleaning convenience and the service life of the vacuum tank are improved, and the product processing quality is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly introduced as follows, and it should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation to the scope, and for those skilled in the art, other related drawings can also be obtained without creative labor on the basis of the drawings.

[0017] Figure 1 is a three-dimensional structure schematic diagram of the extruder vacuum tank of the present application;

[0018] Figure 2 is a top view structure schematic diagram of the extruder vacuum tank of the present application;

[0019] Figure 3 is Figure 2 the structure sectional view of A-A in the present application;

[0020] Figure 4 is Figure 3 the cross section structure schematic diagram of the shield part in the present application;

[0021] Figure 5 is a side view structure schematic diagram of the extruder vacuum tank of the present application;

[0022] Figure 6 is Figure 5 the structure sectional view of B-B in the present application;

[0023] Figure 7 and Figure 8 is the assembly structure schematic diagram of the air filter element, the shield and the integrated head in the present application.

[0024] In the figure: 1, tank body; 11, air inlet; 12, air outlet; 13, blowdown port; 131, blowdown cover; 132, pipe joint; 14, observation port; 141, cover plate; 142, clamp; 15, access port; 151, shield; 1511, joint; 152, quick pressure screw; 1521, U-shaped clamping block; 16, sleeve; 161, inner cavity; 162, guide hole; 17, ejector rod; 171, stop block; 18, spring; 19, top plate; 2, base frame; 3, air filter element; 4, air outlet pipe; 41, integrated head; 411, integrated cavity; 412, interface. DETAILED DESCRIPTION

[0025] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the following will be a clear and complete description of the technical solutions in the embodiments of the present application with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some, but not all, of the embodiments of the present application. The components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0026] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of the present application. It should be noted that: similar reference numbers and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. In the description of the embodiments of the present application, it should be noted that if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship when the product of the present application is usually placed, which is only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", etc. are only used for differentiation, and cannot be understood as indicating or implying relative importance.

[0027] In addition, if the terms "horizontal", "vertical", etc. appear, it does not mean that the component must be absolutely horizontal or vertical, but can be slightly inclined. For example, "horizontal" only means that its direction is relatively more horizontal than "vertical", and does not mean that the structure or component must be completely horizontal, but can be slightly inclined.

[0028] In the description of the embodiments of this utility model, "a plurality of" means at least two.

[0029] In the description of the embodiments of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0030] Example

[0031] Please refer to the instruction manual attached. Figure 1 , 2 As shown in Figure 5, the instruction manual is attached. Figure 1 , 2 Figure 5 shows a vacuum tank for an extruder according to this utility model. It is connected to the main unit of a plastic extruder in conjunction with a vacuum pump for vacuuming. The extruder vacuum tank consists of a base frame 2 and a tank body 1, with the tank body 1 fixed to the top of the base frame 2. An air inlet 11 and an air outlet 12 are respectively provided at the top of the tank body 1 near the front and rear ends, and a drain outlet 13 is provided at the bottom. The air inlet 11, air outlet 12, and drain outlet 13 are all connected to the internal cavity of the tank body 1. (See attached specification). Figure 1 , 3 As shown in Figures 5 and 6, the drain outlet 13 is located at the bottom center of the tank 1, with a large opening diameter and protruding downwards. A drain cover 131 is fixedly connected to the drain outlet 13, and the drain cover 131 is threadedly connected to the drain outlet 13 for easy assembly and disassembly. The bottom of the cavity inside the tank 1 has an incline, and the drain outlet 13 is located at the lowest point, facilitating liquid collection into the drain outlet 13. The drain cover 131 can be removed from the drain outlet 13 for easy cleaning of the inside of the tank 1. To facilitate the discharge of filtered liquid, a pipe connector 132 connecting to the inside of the tank 1 is provided at the bottom center of the drain cover 131. The pipe connector 132 can be connected to an external drain pipe for easy liquid discharge. (See attached instruction manual.) Figure 1As shown, the front center of the tank body 1 is provided with an access hole 15 connected with the inside and outside, the access hole 15 protrudes outside the end face of the tank body 1, the opening area is large, and the staff can conveniently operate the inside of the tank body 1; the access hole 15 is provided with a detachable shield 151, the shield 151 can be covered on the access hole 15, and the two are tightly matched; in order to ensure the sealing property, the back surface of the shield 151 is provided with at least one ring of sealing rings matched with the access hole 15, and the sealing property between the two is ensured after the shield 151 is sleeved and covered on the access hole 15; in order to fix and detach the shield 151 on the access hole 15, refer to the drawings Figures 1 to 5 As shown, the outside of the access hole 15 is circularly arrayed with a plurality of groups of quick pressure screws 152 with the center of the end face as the center, the outside of the shield 151 is arrayed with U-shaped clamping blocks 1521 corresponding in number and position to the quick pressure screws 152 along the circumference, the quick pressure screws 152 can be clamped with the U-shaped clamping blocks 1521 together, and are used for fixing the shield 151 on the access hole 15; refer to the drawings Figure 4As shown, the back of the shield 151 is provided with a top plate 19 elastically connected thereto, which is located in the tank body 1 near the access hole 15. It should be noted that the diameter of the access hole 15 is greater than that of the top plate 19, and the top plate 19 can enter and exit through the access hole 15. Specifically, the back of the shield 151 is provided with a joint 1511 integrally formed thereon, and the outside of the joint 1511 is provided with external threads. The joint 151 is provided with a sleeve 16 fixedly connected thereto, and the sleeve 16 is threadedly connected to the joint 151. The sleeve 16 is internally provided with an inner cavity 161 with an open end, and the open end of the inner cavity 161 faces backward. The sleeve 16 is sleeved on the joint 1511 through the open end thereof. It should be noted that the open end of the inner cavity 161 is provided with internal threads threadedly matched with the external threads of the joint 151. The other end of the sleeve 16 is provided with a guide hole 162 communicating with the inner cavity 161 at the center thereof. The guide hole 162 is inserted with a top rod 17 slidably matched therewith. One end of the top rod 17 is fixedly connected to the end face of the top plate 19 at the center thereof. The top rod 17 is threadedly connected to the top plate 19. The rear end of the top rod 17 is externally provided with an external nut. The front center of the top plate 19 is provided with a threaded hole threadedly matched with the top rod 17. The other end of the top rod 17 corresponding to the top plate 19 is located in the inner cavity 161. The end of the top rod 17 located in the inner cavity 161 is provided with a stop block 171 fixedly connected thereto. The stop block 171 is fixedly connected to the top rod 17, and the diameter of the stop block 171 is smaller than that of the inner cavity 161, so that the stop block 171 does not interfere with the inner cavity 161. The portion of the inner cavity 161 between the stop block 171 and the joint 1511 is provided with a spring 18. The spring 18 is a strong spring. The two ends of the spring 18 abut against the joint 1511 and the stop block 171, respectively. Since the position of the joint 1511 is fixed, the spring 18 generates an outward pushing force on the stop block 171, and further generates a certain pushing force on the top rod 17 and the top plate 19 connected to the top rod 17. Figure 3As shown in Figs. 7 and 8, the inside of the tank body 1 is provided with an air outlet pipe 4 in "L" shape structure, the vertical part of the air outlet pipe 4 is fixed at the top of the inside of the tank body 1, and the two are fixed together by welding, sealed fit, the vertical end of the air outlet pipe 4 is communicated with the lower end of the air outlet 12 on the tank body 1, the other end of the air outlet pipe 4 is provided with an integrated head 41, the integrated head 41 is in disc shape structure, the inside of the integrated head 41 corresponds to the front and back of the top plate 19, and has an integrated cavity 411, the air outlet pipe 4 is communicated with the integrated cavity 411, one end of the integrated head 41 corresponding to the top plate 19 is provided with an interface 412 connected with the inside and outside, the air filter element 3 is installed on the interface 412, it is need to be explained that the interface 412 has a plurality of, one air filter element 3 is screwed on each interface 412, convenient to disassemble and assemble, the end of the air filter element 3 away from the interface 412 is abutted with the end surface of the top plate 19, which can further ensure the stability.

[0032] In order to facilitate the detection of the inside of the tank body 1, the inside of the tank body 1 can be observed more conveniently without disassembling the protective cover 151, the side of the tank body 1 is provided with an observation port 14, the observation port 14 is provided with a cover plate 141 matched with the observation port 14, the cover plate 141 and the observation port 14 are fixedly connected together by the clamp 142, the cover plate 141 is fixed on the observation port 14 by the clamp 142, and a sealing ring is arranged therebetween to ensure the sealing performance of the fit, and the clamp 142 is convenient to disassemble and assemble, the cover plate 141 can be a metal cover or a cover plate 141 provided with transparent explosion-proof glass, which is convenient to observe the inside of the tank body 1, and the inside of the tank body 1 can be further detected through the observation port 14 by disassembling the cover plate 141.

[0033] In use, the vacuum pump connected with the air outlet 12 is started, the air inlet 11 connected with the main body of the injection molding machine is vacuumized, the fine powder impurities entering the inside of the tank body 1 through the air inlet 11 are filtered by the air filter element 3, and the moisture can also be filtered and dripped into the cavity bottom of the tank body 1 and flow to the drain 13; at the same time, the filtered gas enters the air outlet pipe 4 through the integrated cavity 411 and is sent into the air outlet 12 by the air outlet pipe 4; the air filter element 3 installed on the integrated head 41 can be disassembled by dismounting the protective cover 151.

[0034] The extruder vacuum tank can filter the moisture and fine powder impurities in the inside through a plurality of air filter elements, has good filtering effect, and the air filter element is convenient to disassemble and assemble, the inside of the tank body can be conveniently maintained through the maintenance port, the operation is simple, the inside of the tank body can be observed through the observation port, the equipment downtime is reduced, the maintenance efficiency is improved, the stability is good, the fine powder impurities extracted during vacuumization can be effectively filtered, the reaction between the calcium zinc stabilizer raw material in the plastic product and the calcium zinc stabilizer raw material is avoided, the cleaning convenience and service life of the vacuum tank are improved, and the product processing quality is ensured.

[0035] It should be pointed out that the above is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application can have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. An extruder vacuum tank, which is composed of a base frame (2) and a tank body (1), the tank body (1) is fixed on the top of the base frame (2); the top of the tank body (1) is provided with an air inlet (11) and an air outlet (12) near the front and rear ends respectively, and the bottom is provided with a sewage outlet (13), characterized in that: The front center of the tank body (1) is provided with an access hole (15) communicating inside and outside, and the access hole (15) is provided with a detachable shield (151), the back of the shield (151) is provided with a top plate (19) elastically connected thereto, and the top plate (19) is located in the tank body (1) near the access hole (15); the inside of the tank body (1) is provided with an "L" shaped gas outlet pipe (4), which is fixed in the inside of the tank body (1), one end of which communicates with the lower end of the gas outlet (12) on the tank body (1), and the other end is provided with an integrated head (41), which corresponds to the front and back of the top plate (19), and has an integrated cavity (411) in the inside, and the gas outlet pipe (4) communicates with the integrated cavity (411), and one end of the integrated head (41) corresponding to the top plate (19) is provided with an interface (412) communicating inside and outside, and the interface (412) is provided with an air filter element (3), and one end of the air filter element (3) away from the interface (412) abuts against the end face of the top plate (19).

2. An extruder vacuum tank according to claim 1, characterized in that: The back center of the shield (151) is provided with a connector (1511) integrated therewith, and the connector (1511) is provided with a sleeve (16) fixedly connected thereto, and the inside of the sleeve (16) is provided with an open-ended inner cavity (161), and the sleeve (16) is sleeved on the connector (1511) through the end opening thereof, and the other end center of the sleeve (16) corresponding to the connector (1511) is provided with a guide hole (162) communicating with the inner cavity (161), and the guide hole (162) is inserted with a top rod (17) slidingly fitted therein, one end of the top rod (17) is fixedly connected with the end center of the top plate (19), and the other end is located in the inner cavity (161), and the end of the top rod (17) located in the inner cavity (161) is provided with a stop block (171) fixedly connected therewith, and a spring (18) is arranged between the stop block (171) and the connector (1511) in the inner cavity (161).

3. An extruder vacuum tank according to claim 2, characterized in that: The side of the tank body (1) is provided with an observation hole (14), and the observation hole (14) is provided with a cover plate (141) sleeved thereon, and the cover plate (141) and the observation hole (14) are fixedly connected together by a clamp (142).

4. An extruder vacuum tank according to claim 1, characterized in that: The blowdown port (13) is located at the bottom center of the tank body (1) and protrudes downward, and the outside of the blowdown port (13) is provided with a blowdown cover (131) fixedly connected thereto, and the bottom center of the blowdown cover (131) is provided with a pipe connector (132) communicating with the inside of the tank body (1).

5. An extruder vacuum tank according to claim 1, characterized in that: The outside of the access hole (15) is circularly arrayed with a plurality of groups of quick pressure screws (152) with the end center as the center, the outside of the shield (151) is arrayed with U-shaped clamping blocks (1521) corresponding in number and position to the quick pressure screws (152) along the circumference thereof, and the quick pressure screws (152) can be clamped together with the U-shaped clamping blocks (1521) for fixing the shield (151) on the access hole (15).

6. An extruder vacuum tank according to claim 1, characterized in that: The interface (412) has a plurality, and each of the interfaces (412) is provided with an air filter element (3).

7. An extruder vacuum tank according to claim 1, characterized in that: The diameter of the manhole (15) is greater than the diameter of the top plate (19).

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