A retractable inspection window for a spiral machine

Abstract

The utility model provides a kind of pullable inspection window of screw machine, it relates to screw conveyor field, the pullable inspection window of this screw machine, including cylinder section, the outside fixed connection of cylinder section has mounting bracket, the outside fixed connection of cylinder section has observation window door, the top of observation window door is equipped with sealing groove, the inside of observation window door is equipped with first inclined surface groove, the outside fixed connection of first inclined surface groove has two butt plates, the side fixed connection of mounting bracket has first oil cylinder, the outside fixed connection of first oil cylinder has mounting sleeve, the pullable inspection window of this screw machine does not need operating personnel to be assisted with special tool to carry out tedious manual disassembly, it is greatly saved to open the time of inspection window, improves operating efficiency sealing groove in sealing mechanism and sealing plate cooperation, can effectively block material leakage and external impurities enter, the fitment of first inclined surface groove and second inclined surface groove increases sealing contact area, further enhances the tightness of sealing.

Description

Technical Field

[0001] This utility model relates to a pull-out inspection window for a screw conveyor, specifically a pull-out inspection window for a screw conveyor, and belongs to the technical field of screw conveyors. Background Technology

[0002] The inspection window of a tunnel boring machine's screw conveyor is an openable observation and operation window located on the conveyor's casing. It is typically made of high-strength steel and equipped with a sealing device. Its core function is to provide operators with a convenient passage for internal inspection, maintenance, and troubleshooting. During tunnel boring, by opening the inspection window, operators can directly observe the wear condition of the screw blades, whether there are any obstructions (such as stones or reinforcing bars), and the transport status of the excavated soil inside the conveyor. It also facilitates the cleaning, repair, or replacement of critical components such as the blades and shaft.

[0003] The existing inspection window of the screw conveyor requires a special tool to unlock and remove it when it needs to be opened. This process often takes a lot of time to complete and finally open the inspection window. This method of opening the window, which relies on special tools and has a cumbersome disassembly process, greatly reduces efficiency in actual operation. The drawbacks are even more prominent in scenarios that require urgent inspection or frequent operation. Therefore, a new technical solution needs to be designed to solve this problem. Utility Model Content

[0004] The purpose of this utility model is to provide a pull-out inspection window for a screw conveyor in order to solve the above-mentioned problems. This solves the problem that in the prior art, when the inspection window of a screw conveyor needs to be opened, the operator must first find a suitable special tool and then use the tool to disassemble the observation window gate. This process not only requires precise alignment of the tool and the connection part of the gate, but also requires loosening or removing the fixing parts according to specific steps, which often takes a lot of time to complete the disassembly.

[0005] This utility model is achieved through the following technical solution: a pull-out inspection window for a screw conveyor.

[0006] The device includes a cylindrical section, to which a mounting bracket is fixedly connected, and to which an observation window is fixedly connected. The top of the observation window has a sealing groove, and the inner side of the observation window has a first inclined groove. Two mating plates are fixedly connected to the outer side of the first inclined groove. The cylindrical section, as a basic component, provides a stable mounting carrier for the mounting bracket and the observation window. The observation window facilitates operator observation of the internal situation. The design of the sealing groove, the first inclined groove, and the mating plates lays the foundation for subsequent cooperation with components such as gates, and helps improve overall sealing performance and connection stability.

[0007] Preferably, a first hydraulic cylinder is fixedly connected to one side of the mounting bracket, and a mounting sleeve is fixedly connected to the outside of the first hydraulic cylinder. The mounting bracket provides a stable mounting position for the first hydraulic cylinder, ensuring that the first hydraulic cylinder will not easily shake during operation. The mounting sleeve protects the first hydraulic cylinder and also provides guidance for the sliding of the sealing sleeve, ensuring the smoothness of the telescopic movement of the first hydraulic cylinder.

[0008] Preferably, a sealing sleeve is slidably connected to the inner cavity of the mounting sleeve. One end of the sealing sleeve is visible to the mounting sleeve and extends to the outside of the mounting sleeve. The other end of the sealing sleeve is fixedly connected to the telescopic section of the first hydraulic cylinder. The sealing sleeve is slidably connected to the mounting sleeve and can move with the telescopic section of the first hydraulic cylinder when it moves. This does not affect the normal operation of the first hydraulic cylinder and enhances the sealing performance at the connection between the mounting sleeve and the telescopic section of the first hydraulic cylinder, preventing dust, impurities, etc. from entering the interior and affecting the operation of the equipment.

[0009] Preferably, a mounting base is fixedly connected to one end of the first hydraulic cylinder, and a sealing cylinder is fixedly connected to the bottom of the mounting base. The mounting base realizes a stable connection between the first hydraulic cylinder and the sealing cylinder, ensuring the effective transmission of force between the two. The sealing cylinder can protect the internal components such as the second hydraulic cylinder, preventing them from being disturbed by the external environment, and also helps to maintain the internal sealing environment.

[0010] Preferably, a second hydraulic cylinder is fixedly connected to the top of the inner cavity of the sealing cylinder. The bottom end of the second hydraulic cylinder observes the sealing cylinder and extends to the bottom of the sealing cylinder. A gate plate is fixedly connected to the bottom end of the second hydraulic cylinder. The sealing cylinder provides a safe installation space for the second hydraulic cylinder. The second hydraulic cylinder can drive the gate plate to move up and down, thereby controlling the opening and closing of the observation window. The hydraulic cylinder drive method is convenient and labor-saving, and greatly improves work efficiency compared with the traditional manual disassembly method.

[0011] Preferably, the gate is in contact with the observation window, and a sealing plate is fixedly connected to the bottom of the gate. The sealing plate extends into the interior of the sealing groove. The contact between the gate and the observation window achieves the sealing of the observation window. The extension of the sealing plate into the sealing groove significantly improves the sealing effect between the gate and the observation window, effectively preventing material leakage or the entry of external impurities.

[0012] Preferably, the bottom of the gate is provided with a second inclined groove, which fits into the first inclined groove. The second inclined groove fits into the first inclined groove, which increases the contact area between the gate and the observation window door. This not only improves the tightness of the connection, but also disperses the force to a certain extent, reduces the wear of the components, and extends the service life.

[0013] Preferably, two mating grooves are provided on the outer side of the second inclined groove. The mating grooves are inserted into the mating plate. The mating grooves and the mating plate are inserted and matched to further strengthen the connection between the gate and the observation window door, prevent the gate from shifting during operation, and also assist in positioning to ensure that the second inclined groove and the first inclined groove fit precisely, thereby improving the stability and sealing of the overall structure.

[0014] Preferably, mounting plates are fixedly connected to both sides of the mounting frame, and a telescopic limiting rod is fixedly connected to one side of the mounting plate. A connecting plate is fixedly connected to one end of the telescopic limiting rod, and the connecting plate is fixedly connected to the sealing sleeve. The telescopic limiting rod limits the extension of the first hydraulic cylinder, making the extension and retraction process of the first hydraulic cylinder more stable.

[0015] This utility model provides a pull-out inspection window for a screw conveyor, which has the following beneficial effects:

[0016] 1. The pull-out inspection window of this screw conveyor, through an observation window opening mechanism driven by first and second hydraulic cylinders, achieves automated opening and closing of the inspection window, eliminating the need for operators to perform tedious manual disassembly with special tools. This not only significantly saves time in opening the inspection window and improves operational efficiency, but also effectively reduces waiting time and ensures timely equipment maintenance, especially in scenarios requiring urgent inspections or frequent operations. Furthermore, it reduces the labor intensity of manual operation, avoids potential damage to the equipment due to improper manual operation, and enhances the convenience and safety of operation.

[0017] 2. The pull-out inspection window of this screw conveyor, through a sealing mechanism, with the sealing groove and sealing plate in the sealing mechanism cooperating, can effectively prevent material leakage and the entry of external impurities. The fit between the first and second inclined grooves increases the sealing contact area, further enhancing the tightness of the seal. The insertion of the mating groove and the mating plate improves the stability of the overall structure, ensuring that the sealing components will not loosen due to vibration or other factors during equipment operation, maintaining a good sealing state. This not only ensures the cleanliness of the working environment inside the screw conveyor, reducing material waste and equipment contamination, but also extends the service life of the equipment and reduces the failure rate caused by poor sealing. Attached Figure Description

[0018] Figure 1 This is a front-view three-dimensional structural diagram of the present invention;

[0019] Figure 2 This is a schematic diagram of the structure of the observation window of this utility model after it is opened;

[0020] Figure 3 This is a schematic diagram of the cylinder sealing structure of this utility model;

[0021] Figure 4 This is a schematic diagram of the friction mechanism structure of this utility model;

[0022] [Explanation of Key Component Symbols]

[0023] 1. Cylindrical section; 101. Mounting bracket;

[0024] 2. Observation window / door; 201. Sealing groove; 202. First inclined groove; 203. Butt joint plate;

[0025] 3. First hydraulic cylinder; 301. Mounting sleeve; 302. Sealing sleeve;

[0026] 4. Mounting base; 401. Sealing cylinder; 402. Second hydraulic cylinder;

[0027] 5. Gate; 501. Sealing plate; 502. Second inclined groove; 503. Connecting groove;

[0028] 6. Mounting plate; 601. Telescopic limit rod; 602. Connecting plate. Detailed Implementation

[0029] This utility model embodiment provides a pull-out inspection window for a screw conveyor.

[0030] Example 1, as Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, it includes a cylindrical section 1, a mounting bracket 101 fixedly connected to the outer side of the cylindrical section 1, an observation window 2 fixedly connected to the outer side of the cylindrical section 1, a sealing groove 201 opened at the top of the observation window 2, a first inclined groove 202 opened on the inner side of the observation window 2, and two mating plates 203 fixedly connected to the outer side of the first inclined groove 202.

[0031] Please refer to it again. Figure 1 , Figure 2 and Figure 3 A first hydraulic cylinder 3 is fixedly connected to one side of the mounting bracket 101. A mounting sleeve 301 is fixedly connected to the outer side of the first hydraulic cylinder 3. A sealing sleeve 302 is slidably connected to the inner cavity of the mounting sleeve 301. One end of the sealing sleeve 302 extends to the outer side of the mounting sleeve 301 and is fixedly connected to the telescopic section of the first hydraulic cylinder 3. A mounting base 4 is fixedly connected to one end of the first hydraulic cylinder 3. A sealing cylinder 401 is fixedly connected to the bottom of the mounting base 4. A second hydraulic cylinder 402 is fixedly connected to the top of the inner cavity of the sealing cylinder 401. The bottom end of the second hydraulic cylinder 402 extends to the bottom of the sealing cylinder 401 and is fixedly connected to the bottom of the sealing cylinder 401. A gate 5 is fixedly connected to the bottom end of the second hydraulic cylinder 402.

[0032] When the inspection window needs to be opened, the second hydraulic cylinder 402 is activated first, its telescopic section retracts upward, driving the gate 5 fixedly connected to it to move upward, causing the sealing plate 501 at the bottom of the gate 5 to be pulled out from the sealing groove 201 of the inspection window 2. At the same time, the second inclined groove 502 at the bottom of the gate 5 separates from the first inclined groove 202 on the inner side of the inspection window 2, and the mating groove 503 disengages from the mating plate 203. Subsequently, the first hydraulic cylinder 3 is activated, its telescopic section retracts inward, driving the sealing cylinder 401 and the second hydraulic cylinder 402 connected to the sealing cylinder 401 and the gate through the mounting base 4. The entire gate 5 moves away from the observation window 2 until it is completely detached from the observation window 2, thus opening the inspection window. When the inspection window needs to be closed, the operation is reversed: the telescopic section of the first hydraulic cylinder 3 extends outward, pushing the sealing cylinder 401, the second hydraulic cylinder 402, and the gate 5 towards the observation window 2. After reaching the position, the telescopic section of the second hydraulic cylinder 402 extends downward, causing the gate 5 to move downward, so that the sealing plate 501 is inserted into the sealing groove 201, the second inclined groove 502 is fitted with the first inclined groove 202, and the docking groove 503 is inserted into the docking plate 203, thus completing the closing action.

[0033] Example 2, as Figure 1 , Figure 2 and Figure 4 As shown, the gate 5 is in contact with the observation window 2. A sealing plate 501 is fixedly connected to the bottom of the gate 5. The sealing plate 501 extends into the interior of the sealing groove 201. A second inclined groove 502 is provided at the bottom of the gate 5. The second inclined groove 502 fits into the first inclined groove 202. Two mating grooves 503 are provided on the outer side of the second inclined groove 502. The mating grooves 503 are inserted into the mating plate 203. Mounting plates 6 are fixedly connected to both sides of the mounting bracket 101. A telescopic limit rod 601 is fixedly connected to one side of the mounting plate 6. A connecting plate 602 is fixedly connected to one end of the telescopic limit rod 601. The connecting plate 602 is fixedly connected to the sealing sleeve 302.

[0034] When the gate 5, driven by the second hydraulic cylinder 402, contacts and closes the observation window 2, the sealing plate 501 at the bottom of the gate 5 extends precisely into the sealing groove 201 at the top of the observation window 2, forming the first line of defense. This effectively prevents materials or impurities from leaking or entering through the gap between the two. At the same time, the second inclined groove 502 at the bottom of the gate 5 fits into the first inclined groove 202 on the inner side of the observation window 2. The inclined contact characteristic increases the sealing contact area, further enhancing the tightness of the seal and reducing the risk of leakage. In addition, the mating groove 503 on the outer side of the second inclined groove 502 and the mating plate 203 on the outer side of the first inclined groove 202 are interlocked. This not only improves the stability of the connection between the gate 5 and the observation window 2 and prevents the gate 5 from shifting due to vibration or other factors during equipment operation, thus affecting the sealing effect, but also positions the sealing plate 501 and the inclined groove, ensuring that each sealing component is always in the correct sealing position, thereby achieving a reliable overall seal.

[0035] Working principle: When the inspection window needs to be opened, the second hydraulic cylinder 402 is activated first, its telescopic section retracts upward, driving the gate 5 fixedly connected to it to move upward, causing the sealing plate 501 at the bottom of the gate 5 to be pulled out from the sealing groove 201 of the inspection window 2. At the same time, the second inclined groove 502 at the bottom of the gate 5 separates from the first inclined groove 202 on the inner side of the inspection window 2, and the mating groove 503 disengages from the mating plate 203. Subsequently, the first hydraulic cylinder 3 is activated, its telescopic section retracts inward, driving the sealing cylinder 401 and the sealing plate 203 through the mounting base 4. The second hydraulic cylinder 402 and the gate 5 connected to the sealing cylinder 401 move as a whole away from the observation window 2 until the gate 5 is completely disengaged from the observation window 2, thus opening the inspection window. When it is necessary to close the inspection window, the operation process is reversed: the telescopic section of the first hydraulic cylinder 3 extends outward, pushing the sealing cylinder 401, the second hydraulic cylinder 402 and the gate 5 as a whole closer to the observation window 2; after reaching the position, the telescopic section of the second hydraulic cylinder 402 extends downward, causing the gate 5 to move downward, so that the sealing plate 501 is inserted into the sealing groove 201, the second inclined groove 502 and the first inclined groove. 202 Alignment and mating groove 503 are inserted into mating plate 203 to complete the closing action. When gate 5, driven by the second hydraulic cylinder 402, contacts and closes the observation window 2, the sealing plate 501 at the bottom of gate 5 extends precisely into the sealing groove 201 at the top of the observation window 2, forming the first line of defense, effectively preventing materials or impurities from leaking or entering through the gap between them. At the same time, the second inclined groove 502 at the bottom of gate 5 and the first inclined groove 202 on the inner side of the observation window 2 fit together, utilizing the characteristics of inclined contact to increase the sealing effect. The sealing contact area is increased, further enhancing the tightness of the seal and reducing the risk of leakage. In addition, the mating groove 503 on the outside of the second inclined groove 502 and the mating plate 203 on the outside of the first inclined groove 202 are interlocked, which not only improves the stability of the connection between the gate 5 and the observation window 2 and prevents the gate 5 from being displaced due to vibration and other factors during equipment operation, thus affecting the sealing effect, but also plays a positioning role in the cooperation between the sealing plate 501 and the inclined groove, ensuring that each sealing component is always in the correct sealing position, thereby achieving a reliable overall seal.

[0036] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A pull-out inspection window for a screw conveyor, comprising a cylindrical section (1), characterized in that: A mounting bracket (101) is fixedly connected to the outer side of the cylindrical section (1); An observation window (2) is fixedly connected to the outer side of the cylindrical section (1). A sealing groove (201) is provided at the top of the observation window (2). A first inclined groove (202) is provided on the inner side of the observation window (2). Two mating plates (203) are fixedly connected to the outer side of the first inclined groove (202).

2. The pull-out inspection window of a screw conveyor according to claim 1, characterized in that: A first hydraulic cylinder (3) is fixedly connected to one side of the mounting bracket (101), and a mounting sleeve (301) is fixedly connected to the outside of the first hydraulic cylinder (3).

3. The pull-out inspection window of a screw conveyor according to claim 2, characterized in that: The inner cavity of the mounting sleeve (301) is slidably connected to a sealing sleeve (302). One end of the sealing sleeve (302) is visible to the mounting sleeve (301) and extends to the outside of the mounting sleeve (301). One end of the sealing sleeve (302) is fixedly connected to the telescopic section of the first oil cylinder (3).

4. The pull-out inspection window of a screw conveyor according to claim 3, characterized in that: One end of the first oil cylinder (3) is fixedly connected to a mounting base (4), and a sealing cylinder (401) is fixedly connected to the bottom of the mounting base (4).

5. The pull-out inspection window of a screw conveyor according to claim 4, characterized in that: The top of the inner cavity of the sealing cylinder (401) is fixedly connected to a second oil cylinder (402). The bottom end of the second oil cylinder (402) extends to the bottom of the sealing cylinder (401) and a gate (5) is fixedly connected to the bottom end of the second oil cylinder (402).

6. The pull-out inspection window of a screw conveyor according to claim 5, characterized in that: The gate (5) is in contact with the observation window (2), and a sealing plate (501) is fixedly connected to the bottom of the gate (5), the sealing plate (501) extending into the interior of the sealing groove (201).

7. The pull-out inspection window of a screw conveyor according to claim 6, characterized in that: The bottom of the gate (5) is provided with a second inclined groove (502), which is in contact with the first inclined groove (202).

8. The pull-out inspection window of a screw conveyor according to claim 7, characterized in that: Two mating grooves (503) are provided on the outer side of the second inclined groove (502), and the mating grooves (503) are inserted into the mating plate (203).

9. The pull-out inspection window of a screw conveyor according to claim 3, characterized in that: Mounting plates (6) are fixedly connected to both sides of the mounting bracket (101). A telescopic limiting rod (601) is fixedly connected to one side of the mounting plate (6). A connecting plate (602) is fixedly connected to one end of the telescopic limiting rod (601). The connecting plate (602) is fixedly connected to the sealing sleeve (302).

Images