Vacuum pump air inlet anti-blocking device for pug mill

Abstract

The utility model discloses an anti-blocking device for an air inlet of a vacuum pump for a pug mill, which comprises an air inlet pipe arranged at the air inlet of the vacuum pump, and a plurality of air inlet holes arranged on the outer side of the air inlet pipe at equal intervals; the filter cartridge is fixedly connected to the outer side of the air inlet pipe, and two filter screens which are stacked up and down are slidably connected to the interior of the filter cartridge; the utility model has the beneficial effects that the two filter screens which are stacked up and down are arranged in the filter cartridge, and are switched through the filter screen driving mechanism, so that the filter screen on one side can be used for filtering, and the filter screen on the other side can be taken down to be replaced or cleaned; therefore, continuous and effective filtration is realized; the filter screen driving mechanism is of a structure composed of a lifting push plate, a lifting plate and a reset spring, stable movement and switching of the filter screen are guaranteed, and accurate positioning and locking are guaranteed when the filter screen is replaced through arrangement of a limiting assembly.

Description

Technical Field

[0001] The utility model relates to the technical field of mud kneading machines, in particular to an anti-blocking device for an air inlet of a vacuum pump used in a mud kneading machine. Background Art

[0002] When clay trainers are widely used in industries such as ceramics, refractory materials, and bricks and tiles, vacuum clay training technology is often used. The main purpose of this technology is to further remove air and impurities from the clay through a vacuum environment, improve the density and uniformity of the clay, and thus improve the final quality of the product. During operation, the clay that has been preliminarily mixed and moistened is fed into the feed port of the clay trainer. The clay is strongly squeezed and mixed under the action of the spiral shaft or stirring blades of the clay trainer, which helps to further disperse the particles in the clay and make it more uniform. In a certain area of ​​the clay trainer or throughout the entire process, the vacuum system is introduced to reduce the air pressure around the clay, causing the tiny bubbles in the clay to expand and burst, and then be discharged. It helps to eliminate pores in the clay and improve the density of the clay.

[0003] When replacing the filter screen at the existing vacuum pump inlet of the mud making machine, it is impossible to achieve filtering work on one side of the filter screen while the filter screen on the other side can be removed for replacement or cleaning. When starting the machine for replacement, continuous and effective filtration cannot be achieved. Utility Model Content

[0004] The utility model aims to provide a device for preventing the air inlet of a vacuum pump used in a clay making machine from being blocked, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above purpose, the utility model provides the following technical solution: a vacuum pump air inlet anti-blocking device for a mud making machine, comprising:

[0006] An air intake pipe is installed at the air intake port of the vacuum pump, and a plurality of air intake holes are evenly spaced on the outer side of the air intake pipe;

[0007] A filter cartridge, the filter cartridge is fixedly connected to the outside of the air inlet pipe, and two filter screens stacked up and down are slidably connected inside the filter cartridge;

[0008] A filter screen driving mechanism is disposed at the bottom of the filter screen, and the filter screen driving mechanism comprises a lifting push plate slidably disposed inside the filter cylinder, a lifting plate is fixedly connected to the bottom of the lifting push plate, and a return spring for switching the upper and lower filter screens is disposed on the outer side of the lifting plate;

[0009] The limiting assembly is placed in the filter cartridge, and the limiting assembly includes a limiting baffle fixedly connected to one side of the lifting plate and a spring lock hook interlocked with the limiting baffle.

[0010] Preferably, the top and bottom of the filter screen are fixedly connected to a piston plate, and a hole is provided in the middle of the piston plate for sliding connection with the air intake pipe.

[0011] Preferably, a connecting threaded tube is fixedly connected to the piston plate below the filter screen, and a connecting threaded hole cooperating with the connecting threaded tube is provided on the top of the piston plate above the filter screen.

[0012] Preferably, the lifting plate is a U-shaped structure, the outer side of the filter cartridge is slidably connected with a sliding ring, the sliding ring is fixedly connected to the end of the lifting plate, and the return spring is sleeved on the outer side of the lifting plate and located below the sliding ring.

[0013] Preferably, the spring lock hook is fixedly connected to the interior of the filter cartridge, and electromagnets are correspondingly fixedly connected to the interior of the filter cartridge and one side of the spring lock hook, and the two electromagnets have opposite magnetic poles when power is supplied.

[0014] Preferably, an air duct interface is fixedly connected to the outer side of the filter cartridge.

[0015] Compared with the prior art, the beneficial effects of the utility model are as follows: two filter screens stacked up and down are arranged in the filter cartridge, which are switched through the filter screen driving mechanism, so that the filter screen on one side can perform filtering work, and the filter screen on the other side can be removed for replacement or cleaning, thereby realizing continuous and effective filtration; the filter screen driving mechanism uses a structure composed of a lifting push plate, a lifting plate and a reset spring to ensure the stable movement and switching of the filter screen, and the setting of the limit assembly ensures the accurate positioning and locking when replacing the filter screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the filter cartridge of the utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the filter screen of the utility model;

[0019] Figure 4 This is a schematic diagram of the air intake pipe structure of the utility model;

[0020] Figure 5 This is a schematic diagram of the structure of the utility model connecting the threaded pipe;

[0021] Figure 6 This is a schematic diagram of the structure of the connection threaded hole of the utility model;

[0022] Figure 7 It is an enlarged view of structure A of the utility model.

[0023] In the figure: 1. Inlet pipe; 2. Filter cartridge; 3. Filter screen; 4. Lifting push plate; 5. Piston plate; 6. Connecting threaded pipe; 7. Connecting threaded hole; 8. Lifting plate; 9. Limit baffle; 10. Electromagnet; 11. Shrapnel lock hook; 12. Reset spring; 13. Inlet hole; 14. Duct interface; 15. Sliding ring. DETAILED DESCRIPTION

[0024] 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.

[0025] See also Figure 1 , 2 As shown in Figures 3, 4, 5, 6 and 7, the utility model provides a technical solution: an anti-blocking device for the air inlet of a vacuum pump for a mud training machine, comprising: an air inlet pipe 1 installed at the air inlet of the vacuum pump, the top of the air inlet pipe 1 is in a closed state, and a plurality of air inlet holes 13 are equidistantly arranged on the outer side of the air inlet pipe 1 near the top; a filter cartridge 2 is fixedly connected to the outer side of the air inlet pipe 1, and two filter screens 3 stacked up and down are slidably connected inside the filter cartridge 2, and the filter screen 3 slides up and down inside the filter cartridge 2, so as to switch the filter screen as needed; a filter screen driving mechanism is placed at the bottom of the filter screen 3, and the filter screen driving mechanism comprises a lifting push plate 4 slidably arranged inside the filter cartridge 2, a lifting plate 8 is fixedly connected to the bottom of the lifting push plate 4, and a reset spring 12 for switching the upper and lower filter screens 3 is provided on the outer side of the lifting plate 8; a limiting assembly is placed in the filter cartridge 2, and the limiting assembly comprises a limiting baffle 9 fixedly connected to one side of the lifting plate 8 and a spring lock hook 11 interlocked with the limiting baffle 9.

[0026] It should be noted that, in the normal state of the utility model, the two filter screens 3 are stacked up and down in the filter cartridge 2. At this time, the limit baffle 9 and the spring lock hook 11 cooperate and interlock, and the filter screen 3 located at the top and the outer side of the air inlet 13 filter the incoming air. When the pressure indicator or vacuum gauge changes or the noise increases or becomes abnormal, the limit assembly can be unlocked through the corresponding control switch. When the limit baffle 9 and the spring lock hook 11 are separated, under the action of the reset spring 12, the filter screen 3 located at the bottom will remove the previous filter screen 3 from The top of the filter cartridge 2 is pushed out, so that the filter screen 3 located below corresponds to the air inlet 13, so that the filter screen 3 below performs a short filtration, and after the upper filter screen 3 is removed and replaced, the previous filter screen 3 is pressed downward, so that the limit baffle 9 and the spring lock hook 11 cooperate and interlock to lock the filter screen 3 below, so that the replaced filter screen 3 above corresponds to the air inlet 13, and filtering is performed again, the filter screen is replaced and cleaned as needed to keep the vacuum pump working effectively, and at the same time, reduce the operating problems caused by the blockage of the air inlet when replacing the filter screen.

[0027] See also Figure 1 , 2 As shown in , 3, 4, 5, 6 and 7, the top and bottom of the filter screen 3 are fixedly connected with a piston plate 5, the middle part of the piston plate 5 is provided with a hole which is slidably connected with the air intake pipe 1, the piston plate 5 below the filter screen 3 is fixedly connected with a connecting threaded tube 6, and the top of the piston plate 5 above the filter screen 3 is provided with a connecting threaded hole 7 which cooperates with the connecting threaded tube 6.

[0028] It should be noted that the piston plate 5 of the utility model is a metal ring with a rubber ring bonded to the top. The outer circle of the rubber ring is slidably connected to the inner wall of the filter cylinder 2, and the inner circle is slidably connected to the air intake pipe 1. The upper filter screen 3 is connected to the connecting threaded hole 7 of the lower filter screen 3 through the connecting threaded tube 6, so as to realize the connection and installation between the filter screens 3, and the filter screen 3 located below is threadedly connected to the lifting push plate 4 through the connecting threaded tube 6, so that the lifting and lowering of the lifting push plate 4 drives the lifting and switching of the two filter screens 3.

[0029] See also Figure 2 , 7 As shown, the lifting plate 8 is a U-shaped structure, and a sliding ring 15 is slidably connected to the outer side of the filter cartridge 2, and the sliding ring 15 is fixedly connected to the end of the lifting plate 8. The reset spring 12 is sleeved on the outer side of the lifting plate 8 and is located below the sliding ring 15. The spring lock hook 11 is fixedly connected to the inside of the filter cartridge 2, and the inside of the filter cartridge 2 and one side of the spring lock hook 11 are correspondingly fixedly connected with an electromagnet 10, and the two electromagnets 10 have opposite magnetic poles when power is supplied.

[0030] It should be noted that the lifting plate 8 of the U-shaped structure of the utility model is connected to the lifting push plate 4 and the sliding ring 15 respectively. When the filter screen 3 is pressed from the top to install the replaced filter screen 3 into the filter cartridge 2, the filter screen 3 at the bottom drives the lifting plate 8 to move downward under the action of pressure. While the sliding ring 15 compresses the reset spring 12, the lifting push plate 4 drives the limit baffle 9 to move downward. When the limit baffle 9 contacts the spring clip lock hook 11, the lock hook of the spring clip lock hook 11 is deformed and hooked on the top of the limit baffle 9. The spring clip lock hook 11 is a metal spring. When the filter screen 3 needs to be switched, the two electromagnets 10 are controlled to be energized. The suction force of the two is greater than the elastic force of the spring clip lock hook 11, so that the limit baffle 9 is separated from the spring clip lock hook 11, and the reset spring 12 drives the sliding ring 15. The sliding ring 15 drives the lifting push plate 4 to rise and fall through the lifting plate 8.

[0031] See also Figure 1 As shown, an air duct interface 14 is fixedly connected to the outer side of the filter cartridge 2 .

[0032] It should be noted that after the two filter screens 3 of the utility model are switched up and down, the middle of the filter screen 3 always corresponds to the air duct interface 14, and the structure of the filter screen 3 is that filter cotton is arranged inside the metal mesh, and the filter cotton is glass fiber filter cotton.

[0033] In the description of the present invention, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inside", "front", "center", "both ends" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0034] In addition, the terms "first", "second", "third" and "fourth" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first", "second", "third" and "fourth" may explicitly or implicitly include at least one of such features.

[0035] In the present utility model, unless otherwise clearly stipulated and limited, the terms such as "installation", "setting", "connection", "fixation" and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the utility model according to the specific circumstances.

[0036] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for preventing air inlet blockage of a vacuum pump for a clay machine, characterized in that: include: An air intake pipe (1) is installed at the air intake of the vacuum pump, and a plurality of air intake holes (13) are equidistantly arranged on the outer side of the air intake pipe (1); A filter cartridge (2), the filter cartridge (2) being fixedly connected to the outside of the air inlet pipe (1), and two filter screens (3) stacked up and down are slidably connected inside the filter cartridge (2); A filter screen drive mechanism, the filter screen drive mechanism is placed at the bottom of the filter screen (3), the filter screen drive mechanism comprises a lifting push plate (4) slidably arranged inside the filter cylinder (2), a lifting plate (8) is fixedly connected to the bottom of the lifting push plate (4), and a return spring (12) for switching the upper and lower filter screens (3) is arranged on the outer side of the lifting plate (8); A limit assembly is disposed in the filter cartridge (2), and comprises a limit baffle (9) fixedly connected to one side of the lifting plate (8) and a spring lock hook (11) interlocked with the limit baffle (9).

2. The device for preventing air inlet blockage of a vacuum pump for a clay extruder according to claim 1, characterized in that: The top and bottom of the filter screen (3) are both fixedly connected to a piston plate (5), and a hole is provided in the middle of the piston plate (5) for sliding connection with the air intake pipe (1).

3. The device for preventing air inlet blockage of a vacuum pump for a clay extruder according to claim 2, characterized in that: The piston plate (5) located below the filter screen (3) is fixedly connected with a connecting threaded tube (6), and the top of the piston plate (5) located above the filter screen (3) is provided with a connecting threaded hole (7) that matches the connecting threaded tube (6).

4. The device for preventing air inlet blockage of a vacuum pump for a clay extruder according to claim 1, characterized in that: The lifting plate (8) is a U-shaped structure. The outer side of the filter cartridge (2) is slidably connected to a sliding ring (15). The sliding ring (15) is fixedly connected to the end of the lifting plate (8). The return spring (12) is sleeved on the outer side of the lifting plate (8) and is located below the sliding ring (15).

5. The device for preventing air inlet blockage of a vacuum pump for a clay extruder according to claim 1, characterized in that: The spring lock hook (11) is fixedly connected to the inside of the filter cartridge (2), and the inside of the filter cartridge (2) and one side of the spring lock hook (11) are correspondingly fixedly connected with an electromagnet (10), and the two electromagnets (10) have opposite magnetic poles when electricity is supplied.

6. The device for preventing air inlet blockage of a vacuum pump for a clay extruder according to claim 1, characterized in that: An air duct interface (14) is fixedly connected to the outer side of the filter cartridge (2).

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