Pressing rod type extruding machine

Abstract

The utility model belongs to the technical field of screw extrusion equipment, and particularly discloses a compression bar type extruder which comprises a rack, a screw conveying mechanism, a screw rod and a screw rod, the spiral conveying mechanism is used for driving the solid-liquid mixture to move towards the outlet assembly; the outlet assembly comprises a flange, an upper door, a lower door, a pressing rod and a balancing weight, the flange is installed on the portion, at an outlet of the spiral conveying mechanism, of the rack, and the upper door and the lower door are rotationally connected with the flange; one end of the pressing rod is connected with the balancing weight, and the other end of the pressing rod is pressed on the upper door and the lower door to prevent the upper door and the lower door from being opened relative to the flange. The screen drum is coaxially arranged outside the spiral conveying mechanism in a sleeving manner and is provided with a filtering structure for sewage to pass through; and the water collecting hopper is positioned below the screen drum and is used for collecting sewage filtered by the screen drum. By adjusting the weight of the balancing weight, the acting force of the pressing rod on the upper door and the lower door can be adjusted, and then the requirement for extrusion of various materials is met.

Description

Technical Field

[0001] This utility model belongs to the technical field of spiral extrusion equipment, and in particular relates to a pressure bar type extruder. Background Technology

[0002] Screw presses are widely used in various industries such as food, chemical, and pharmaceutical. Their working principle involves using a screw propeller to advance the material forward, while pressure is applied in the pressing zone to expel juices or oils. This equipment offers numerous advantages in design and operation, including high efficiency, energy saving, wide applicability, ease of operation, and hygiene. The applications of screw presses are very broad, including but not limited to the food industry (pressing fruit and vegetable juices), the chemical industry (pressing chemical raw materials and coatings), the pharmaceutical industry (pressing extracts from traditional Chinese medicine), the environmental protection industry (pressing municipal solid waste and kitchen waste), and other industries (such as papermaking wastewater and textile wastewater).

[0003] The dewatering process of a screw extruder is typically divided into two stages. The first stage utilizes a screw auger, which consists of three sections: a conveying section, a compression section, and a discharge section. The progressively decreasing conveying space creates progressively increasing pressure on the material, forcing its volume to shrink and extracting moisture. The second stage utilizes a material blocking device. When the material enters the discharge section of the screw auger, the auger applies an axial thrust to push it out of the discharge port. Simultaneously, the material blocking device, pressurized by a spring mechanism, applies a counterforce to the material about to be pushed out, thus creating a compressive force for the second stage of dewatering.

[0004] However, the pressure supply design of the discharge port of existing extruders is mostly based on a spring structure. The spring's reaction force provides resistance to achieve extrusion at the discharge port to achieve solid-liquid separation. Because the spring pressure is relatively simple, it cannot achieve adjustable discharge port pressure and is only suitable for a single material. Therefore, how to design a device that can adjust the discharge port pressure has become a key issue in the existing technology field. Utility Model Content

[0005] In order to overcome the above-mentioned shortcomings of the prior art, this utility model provides a pressure bar type extrusion machine, which solves the above problems.

[0006] To achieve the above objectives, this utility model discloses a bar-type extrusion press, comprising:

[0007] A frame, on which a screw conveyor mechanism is provided;

[0008] A screw conveyor mechanism for driving a solid-liquid mixture toward an outlet assembly;

[0009] The outlet assembly comprises a flange, an upper door, a lower door, a pressure rod and a counterweight, the flange is installed on the rack at the outlet of the screw conveying mechanism, the upper door and the lower door are respectively rotationally connected with the flange; wherein one end of the pressure rod is connected with the counterweight, and the other end of the pressure rod is respectively pressed on the upper door and the lower door to block the opening of the upper door and the lower door relative to the flange.

[0010] The screen cylinder coaxially covers the screw conveying mechanism and is provided with a filtering structure for passing sewage.

[0011] And a water collecting bucket located below the screen cylinder is used to collect the sewage filtered by the screen cylinder.

[0012] Compared with the prior art, the screw conveying mechanism works to drive the solid-liquid mixture to move towards the outlet assembly. Because one end of the pressure rod is connected with the counterweight and the other end is respectively pressed on the upper door and the lower door, the force of the pressure rod is used to block the opening of the upper door and the lower door. Because the screw conveying mechanism continuously conveys the solid-liquid mixture to press the upper door and the lower door, the solid-liquid separation is completed at the outlet position of the screw conveying mechanism. Specifically, after the liquid is filtered by the screen cylinder, it flows into the water collecting bucket for recycling, and the solid is discharged from the screw conveying mechanism through the gap generated by the pressing of the upper door and the lower door. The design of the pressure rod is adopted because, according to the principle of lever, by increasing the counterweight and the weight of the counterweight, the force generated by the weight can be applied to the upper door and the lower door of the outlet, thereby providing an inward force to the outlet. Obviously, by adjusting the weight of the counterweight, the force of the pressure rod on the upper door and the lower door can be adjusted, thereby meeting the needs of extrusion of various materials.

[0013] Further, the screw conveying mechanism comprises a speed reducer, a screw shaft and a screw blade, the speed reducer is connected with the screw shaft through a shaft coupling, and a plurality of screw blades with equal pitch are arranged on the screw shaft.

[0014] Further, the screw blade gradually thickens from the inlet position to the outlet position of the screw conveying mechanism.

[0015] Further, a tungsten carbide wear-resistant coating is arranged on the screw blade at the outlet position of the screw conveying mechanism.

[0016] Further, an observation door is arranged on the outside of the water collecting bucket.

[0017] Further, a protective cover is arranged at the tail end of the rack to prevent personnel injury caused by operation errors.

[0018] Further, a conical disc is arranged at the outlet position of the screw conveying mechanism.

[0019] Further, a screen cylinder cover is arranged above the screen cylinder.

[0020] Further, the water outlet is arranged at the bottom of the water collecting hopper.

[0021] Further, the upper door and the lower door are rotatably connected with the flange through a hinge structure, and a door fixing member for preventing the door from rotating is arranged outside the upper door and the lower door; the pressing rod comprises a first pressing rod and a second pressing rod, the first pressing rod is hingedly connected with the second pressing rod, the first pressing rod is used for blocking the opening of the upper door, and the second pressing rod is used for blocking the opening of the lower door. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description only represent some of the embodiments of the present application, and other drawings can also be obtained by those skilled in the art without any creative effort.

[0023] Figure 1 It is a structure schematic diagram of a pressing rod type extruding machine of the embodiment of the present application.

[0024] Figure 2 It is a structure schematic diagram of the embodiment of the present application after hiding the screen cylinder cover.

[0025] Figure 3 It is a structure schematic diagram of the embodiment of the present application after hiding the screen cylinder cover and the screen cylinder.

[0026] Figure 4 It is a structure schematic diagram of the outlet assembly of the embodiment of the present application.

[0027] The following are the signs of the drawings:

[0028] 1, rack; 2, speed reducer; 3, flange; 4, upper door; 5, lower door; 6, first pressing rod; 7, counterweight; 8, screen cylinder; 9, water collecting hopper; 10, spiral shaft; 11, spiral blade; 12, observation door; 13, protective cover; 14, conical disc; 15, screen cylinder cover; 16, water outlet; 17, door fixing member; 18, second pressing rod. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments only represent some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without any creative effort fall within the scope of protection of the present application.

[0030] As Figures 1-4 shown, the utility model discloses a kind of pressing rod type extruders, comprising:

[0031] Frame 1, frame 1 is equipped with screw conveying mechanism;

[0032] Screw conveying mechanism, screw conveying mechanism is used to drive solid-liquid mixture to move towards outlet assembly;

[0033] Outlet assembly, outlet assembly includes flange 3, upper door 4, lower door 5, pressing rod and counterweight 7, flange 3 is installed on the frame 1 at the outlet of screw conveying mechanism, upper door 4 and lower door 5 are respectively rotatably connected with flange 3;Wherein, the one end of pressing rod is connected with counterweight 7, the other end of pressing rod is respectively pressed on upper door 4 and lower door 5, to block upper door 4 and lower door 5 relative to flange 3 open;

[0034] Screen cylinder 8, screen cylinder 8 is coaxially sleeved in screw conveying mechanism outside, and is equipped with filter structure for sewage passing, wherein, screen cylinder 8 is made of wedge type screen net, both sides are welded flange plate, middle increases hoop to strengthen, prevent screen cylinder from damaging in operation process;

[0035] And water collecting hopper 9 located below screen cylinder 8, water collecting hopper 9 is used to collect the sewage filtered out of screen cylinder 8.

[0036] The present application has the following effects compared with prior art: when using, screw conveying mechanism works to drive solid-liquid mixture to move towards outlet assembly, because the one end of pressing rod is connected with counterweight 7, and the other end is respectively pressed on upper door 4 and lower door 5, so the opening of upper door 4 and lower door 5 is blocked by the action force of pressing rod, and because screw conveying mechanism continuously conveys solid-liquid mixture to extrude upper door 4 and lower door 5, so solid-liquid separation is completed at the outlet position of screw conveying mechanism, specifically, liquid flows into water collecting hopper 9 for recovery after screening by screen cylinder 8, and solid is discharged from screw conveying mechanism through the gap generated by extruding upper door 4 and lower door 5. The reason why the present application adopts the design of pressing rod is that, according to the principle of lever, by increasing counterweight 7 and further increasing the weight of counterweight 7, the force generated by weight can be applied to upper door 4 and lower door 5 of outlet, so as to give outlet an inward force. Obviously, by adjusting the weight of counterweight 7, the present application can adjust the action force of pressing rod on upper door 4 and lower door 5, to further meet the needs of extrusion of various materials.

[0037] More specifically, as Figure 4As shown, the screw conveying mechanism includes a reducer 2, a screw shaft 10 and screw blades 11, the reducer 2 is connected with the screw shaft 10 through a shaft coupling, and the screw shaft 10 is provided with a plurality of screw blades 11 with equal pitch. Among them, the screw shaft 10 is designed as an equal shaft diameter, and the screw blades 11 are installed on the screw shaft 10 with equal pitch. Through the above design, the machining cost of the screw shaft 10 and the screw blades 11 can be effectively reduced while ensuring the normal operation of the screw conveying mechanism.

[0038] In connection with the above embodiment, more preferably, the screw blades 11 gradually thicken from the inlet position to the outlet position of the screw conveying mechanism. Through this design, it can be ensured that at the extrusion section of the outlet position, the screw blades 11 can withstand greater extrusion pressure to improve the service life of the screw blades 11.

[0039] In connection with the above embodiment, more preferably, the screw blades 11 at the outlet position of the screw conveying mechanism are provided with a tungsten carbide wear-resistant coating to prevent the screw blades 11 from being worn out due to long-time operation, thereby ensuring the normal performance of the equipment.

[0040] In connection with the above embodiment, more preferably, the outer side of the water collecting hopper 9 is provided with an observation door 12. Through the observation door 12, the water tank condition in the water collecting hopper 9 can be found in time, and the sewage can be cleaned in time, thereby preventing the difficult problem of difficult cleaning of sewage due to long-time operation of the equipment.

[0041] In connection with the above embodiment, more preferably, the tail end of the rack 1 is provided with a protective cover 13 to prevent personnel injury caused by operation mistakes.

[0042] In connection with the above embodiment, more preferably, the outlet position of the screw conveying mechanism is provided with a conical disc 14. Among them, when the solid-liquid mixture enters the outlet position, the inner diameter of the outlet position becomes smaller due to the design of the conical disc 14, thereby increasing the extrusion pressure of the solid-liquid mixture. The conical disc 14 is equivalent to reducing the diameter of the screw shaft 10 at the outlet position, improving the extrusion effect of the solid-liquid mixture at the outlet position, and ensuring more sufficient separation of water from the solid.

[0043] In connection with the above embodiment, more preferably, a screen cylinder cover 15 is arranged above the screen cylinder 8. Through the design of the screen cylinder cover 15, the water squeezed out of the screen cylinder 8 is prevented from splashing, and the screen cylinder 8 can be cleaned after being opened.

[0044] In connection with the above embodiment, more specifically, the bottom of the water collecting hopper 9 is provided with a water outlet 16 to discharge the liquid to a specified position through the water outlet 16.

[0045] In connection with the above embodiment, more specifically, as Figure 4As shown, the upper door 4 and the lower door 5 are respectively connected with the flange 3 through a hinge structure, and a door fixing member 17 for preventing the door from rotating is arranged outside the upper door 4 and the lower door 5; the pressing rod comprises a first pressing rod 6 and a second pressing rod 18, the first pressing rod 6 is hinged with the second pressing rod 18, the first pressing rod 6 is used for blocking the upper door 4 from being opened, and the second pressing rod 18 is used for blocking the lower door 5 from being opened.

[0046] It should be noted that the door fixing member 17 comprises a rotating plate and a fixed plate, the fixed plate is fixed on the flange 3, one end of the rotating plate is connected with the fixed plate through a rotating shaft, and the other end of the rotating plate is pressed outside the upper door 4 and the lower door 5, so as to assist and guide the upper door 4 and the lower door 5 to slowly open after being stressed.

[0047] The above description of the disclosed embodiments enables those skilled in the art to carry out or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to these embodiments shown herein, but will accord with the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A press ram extruder characterized by, The utility model relates to a sewage treatment device, comprising: a rack provided with a screw conveying mechanism; a screw conveying mechanism for driving the solid-liquid mixture to move towards an outlet assembly; an outlet assembly comprising a flange, an upper door, a lower door, a pressing rod and a counterweight, the flange being installed on the rack at the outlet of the screw conveying mechanism, the upper door and the lower door being respectively rotationally connected with the flange; wherein one end of the pressing rod is connected with the counterweight, and the other end of the pressing rod is respectively pressed on the upper door and the lower door to block the opening of the upper door and the lower door relative to the flange; a screen cylinder coaxially sleeved outside the screw conveying mechanism and provided with a filtering structure for sewage to pass through; and a water collecting hopper located below the screen cylinder, the water collecting hopper being used to collect the sewage filtered out by the screen cylinder.

2. A press ram extruder according to claim 1 wherein, The screw conveying mechanism comprises a speed reducer, a screw shaft and screw blades, the speed reducer being connected with the screw shaft through a shaft coupling, and a plurality of screw blades with equal pitch being arranged on the screw shaft.

3. A press ram extruder according to claim 2 wherein, The screw blades gradually thicken from the inlet position to the outlet position of the screw conveying mechanism.

4. A pressurized ram extruder according to claim 3, wherein A tungsten carbide wear-resistant coating is arranged on the screw blades at the outlet position of the screw conveying mechanism.

5. A press ram extruder as defined in claim 1 wherein, An observation door is arranged on the outside of the water collecting hopper.

6. A press ram extruder as defined in claim 1 wherein, A protective cover is arranged at the tail end of the rack to prevent personnel injury caused by operation errors.

7. A press ram extruder as defined in claim 1 wherein, A conical disc is arranged at the outlet position of the screw conveying mechanism.

8. A pressurized ram extruder according to claim 1 wherein, A screen cylinder cover is arranged above the screen cylinder.

9. A pressurized ram extruder as defined in claim 1, wherein, A water outlet is arranged at the bottom of the water collecting hopper.

10. A press ram extruder as defined in claim 1 wherein, The upper door and the lower door are respectively rotationally connected with the flange through a hinge structure, and a door fixing member for preventing the door from rotating is arranged on the outside of the upper door and the lower door; the pressing rod comprises a first pressing rod and a second pressing rod, the first pressing rod and the second pressing rod being hingedly connected, the first pressing rod being used to block the opening of the upper door, and the second pressing rod being used to block the opening of the lower door.

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