Inclined surface sealing door mechanism for high-pressure water jet sand blasting machine box and opening and closing method of inclined surface sealing door mechanism

Abstract

The invention discloses an inclined plane sealing door mechanism for a high-pressure water jet sand blasting machine box, which comprises a door frame arranged on a machine box body frame and a door body matched with the door frame for sealing, the sealing surface of the door frame is a first sealing inclined plane, the sealing surface of the door body is a second sealing inclined plane matched with the first sealing inclined plane, and the sealing surface of the door body is a second sealing inclined plane matched with the second sealing inclined plane. One side of the door body is provided with a side pressing device which is used for applying pressure to the door body from the side face to enable the second sealing inclined face to generate a wedge-shaped extrusion effect on the first sealing inclined face and force the first sealing inclined face and the second sealing inclined face to be pressed and sealed. The invention further discloses an opening and closing method of the inclined plane sealing door mechanism. The sealing faces of the door frame and the door body are arranged to be the inclined faces, the side pressing device is arranged, pressure is applied to the door body from one side of the door body to generate the wedge-shaped extrusion effect so that the sealing inclined faces can be pressed and sealed, pressing and sealing of the sealing faces of the door mechanism are achieved, the structure is simple and compact, operation is easy, and the sealing effect is good.

Description

Technical Field

[0001] The present invention belongs to the technical field of sandblasting and cleaning equipment, and particularly relates to a sealing door and an opening and closing method thereof. Background Art

[0002] With the wide application of the high-pressure water jet sandblasting and cleaning technology for metal strip materials in the steel industry, due to its advantages such as high environmental protection and strong surface treatment uniformity, it has gradually replaced the traditional pickling, mechanical grinding and shot blasting processes. This equipment impacts and peels the surface of the high-speed running metal strip through the nozzle spraying a high-concentration abrasive jet, and can efficiently remove the oxide scale and rust layer. However, during the sandblasting operation, the high-pressure water jet mixed with abrasive is likely to splash out from the gap of the machine box door, resulting in a complex working condition environment where high-temperature water vapor diffuses and abrasive particles adhere around the door body for a long time, posing a severe challenge to the sealing performance and structural stability of the door body.

[0003] In the prior art, the machine box door mostly adopts a structure where one side rotates axially through a fixed hinge, and the other side completes closing and locking with the help of a hook locking mechanism inside the door handle. The sealing system adopts a double-layer composite design, that is, a square groove is processed on the side wall of the door frame to install an elastic rubber sealing strip, and a narrow-section square steel bar welded to the edge of the door body forms a pressing sealing interface. This structure generates uniform deformation through the linear extrusion of the edge of the steel bar on the sealing strip, and uses the high resilience characteristics of the rubber material to compensate for the assembly gap, and has a good anti-seepage and anti-abrasive leakage effect under static working conditions.

[0004] However, it is found in actual application that the above structure has significant defects: First, due to the rigid deformation of the door body and the cumulative error of the hinge assembly, the compression deformation amount of the sealing strip shows an asymmetric distribution. On the hinge side, due to the gravity of the door body, the downward pressure of the steel bar is too large, accelerating the local fatigue aging of the sealing strip, while on the door handle side, due to the attenuation of the locking force, the effective pressing amount is insufficient, forming an abrasive penetration channel, seriously affecting the sealing effect. Second, the force application mode of the single-side hinge and the hook lock on the opposite side causes the door body to bear an asymmetric bending moment, and the hinge mounting hole position and the door handle lock point are in a state of stress concentration for a long time, and are prone to failures such as hinge shaft fracture, lock deformation and door body warping during frequent opening and closing cycles, which not only increases the maintenance frequency, but may also cause equipment shutdown due to seal failure, seriously affecting the operation efficiency. Therefore, there is an urgent need for a sealing door structure with good sealing effect, uniform stress distribution, stability and reliability. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to overcome the above-mentioned deficiencies and defects in the background art, and provide an inclined surface sealing door mechanism for a high-pressure water jet sandblasting machine box and an opening and closing method thereof, which has a simple and compact structure, is easy to operate, has a good sealing effect, uniform stress distribution, stability and reliability.

[0006] To solve the above technical problems, the technical solution proposed by the present invention is: An inclined surface sealing door mechanism for a high-pressure water jet sandblasting machine box, comprising a door frame provided on the frame of the machine box body, and a door body that cooperates with the door frame for sealing. The sealing surface of the door frame is a first sealing inclined surface, and the sealing surface of the door body is a second sealing inclined surface that cooperates with the first sealing inclined surface. One side of the door body is provided with a side pressure device for pressing the door body from the side to cause the second sealing inclined surface to produce a wedge-shaped extrusion effect on the first sealing inclined surface, forcing the first sealing inclined surface and the second sealing inclined surface to be tightly pressed and sealed.

[0007] In the above inclined surface sealing door mechanism, preferably, the door frame is cylindrical, the first sealing inclined surface is an elliptical annular sealing inclined surface obtained by obliquely cutting the door frame with a plane obliquely intersecting the central axis of the door frame, the second sealing inclined surface is an elliptical annular sealing inclined surface that cooperates with the first sealing inclined surface, there is a wedge-shaped notch at the door frame, the door body is integrally wedge-shaped, and the side pressure device is located on the wider side of the wedge. The existing door structure of the machine box generally adopts a plane sealing structure of embedding a sealing strip in a square groove and pressing it tightly with a narrow side of a square steel bar. The installation and replacement of the sealing strip are inconvenient, and the sealing strip and the narrow side of the square steel bar are not tightly pressed at the four corners, resulting in poor sealing effect. The above setting of the present invention can eliminate the crimping blind area at the four corners of the traditional square structure through the cooperation of the elliptical annular sealing inclined surface, making the sealing more uniform and reliable; the door body is integrally wedge-shaped and cooperates with the wedge-shaped notch of the door frame, and can fit more closely when closed. At the same time, the provided side pressure device can effectively apply pressure to ensure sufficient extrusion between the sealing inclined surfaces.

[0008] In the above inclined surface sealing door mechanism, preferably, the door frame and the door body are in a horizontal side-opening and pushing-pulling type cooperation structure. One side of the door frame is provided with a limiting member for restricting the position of one side of the door body. The side pressure device is located on the other side of the door body. The notch width k of the wedge-shaped notch at the door frame gradually increases from the limiting member to the side pressure device, and the thickness h of the wedge-shaped door body gradually increases from the limiting member to the side pressure device. This setting, through the cooperation of the side-opening and pushing-pulling method and the side pressure device, avoids the problem of insufficient sealing caused by uneven pressing amounts of the hinge and the door handle, enables the sealing inclined surfaces to fit more closely, and enhances the sealing effect; at the same time, it avoids the problem of fracture and deformation caused by stress concentration of the hinge and the door handle due to long-term use. The door frame and the door body form a closed-loop force system through the limiting member and the side pressure device, eliminating the stress concentration at connection points such as the hinge, the door handle, and the internal hook lock. The overall structure rigidity is enhanced, the service life of the door body and the door frame is increased, the equipment is more stable and reliable, and the maintenance frequency and cost are reduced.

[0009] In the above-mentioned inclined plane sealing door mechanism, preferably, a push-pull driving device for driving the door body to move horizontally relative to the door frame is provided on the frame of the chassis body. The push-pull driving device includes a guiding component for enabling the door body to move horizontally relative to the door frame and a driving component for driving the movement of the door body. With this setting, the guiding component can constrain the movement of the door body along a preset horizontal trajectory, ensuring the alignment accuracy between the door body and the wedge-shaped notch of the door frame. In addition, the guiding component disperses the weight of the door body to the chassis frame, avoiding fatigue deformation caused by single-point load-bearing of traditional hinges and improving the structural stability during long-term use. The provided driving component can provide a uniform linear thrust for the door body, making it more convenient to use.

[0010] In the above-mentioned inclined plane sealing door mechanism, preferably, the guiding component includes an upper guiding groove and a lower guiding groove respectively and parallelly arranged on the upper end surface and the lower end surface of the door frame, and a guiding strip and rolling rollers respectively arranged on the upper end surface and the lower end surface of the door body. The guiding strip is slidably embedded in the upper guiding groove, and the rolling rollers are rotatably arranged in the lower guiding groove. With this setting, stable lateral constraint is provided through the sliding cooperation between the guiding strip and the upper guiding groove, ensuring the alignment accuracy of the sealing surface and guaranteeing full contact of the sealing inclined plane when closed. Through the rolling friction design between the rolling rollers and the lower guiding groove, the moving resistance of the door body is greatly reduced, making the opening and closing of the door body smoother and the operation easier and more labor-saving.

[0011] In the above-mentioned inclined plane sealing door mechanism, preferably, the driving component is arranged on the same side as the side pressure device. The driving component includes a gear rotating component and a rack. The gear rotating component is arranged on the frame of the chassis body, the rack is horizontally arranged along the translation direction of the door body, one end of the rack is connected to the door body, and the other end is meshed and connected to the gear rotating component. With this setting, the rotation of the gear rotating component drives the movement of the rack, thereby realizing the horizontal linear displacement of the door body, and the operation is simple and convenient. Setting the driving component on the same side as the side pressure device enables the side pressure device to block the driving component from driving the door body to move, thereby effectively locking the door body. In addition, the driving component is located outside the chassis, which can avoid the influence of the high-humidity and high-abrasive environment inside the chassis and improve the service life and reliability of the driving component.

[0012] In the above inclined plane sealing door mechanism, preferably, the side pressing device includes a pressing frame mounted on the frame of the chassis body, a pressing assembly provided on the pressing frame, and a pressed member provided on the door body for bearing the pressure applied by the pressing assembly. The pressing assembly is movably provided on the pressing frame, and the pressed member and the pressing assembly are in contact through a pressing inclined plane. With this arrangement, the pressing frame is mounted on the frame of the chassis body, and the pressing assembly is designed to be movable on the pressing frame. When the pressing assembly applies pressure to the pressed member, the contact between the pressing assembly and the inclined plane of the pressed member decomposes the driving force into a normal pressing force and a tangential sliding force, which can block the horizontal movement of the door body and press the door body tightly.

[0013] In the above inclined plane sealing door mechanism, preferably, the pressing assembly includes a pressing screw vertically penetrating the pressing frame and threadedly engaged therewith, a pressing member provided at one end of the pressing screw, and a pressing handle provided at the other end of the pressing screw. A first pressing inclined plane is provided on the side of the pressing member close to the door frame, and the pressed member is provided with a second pressing inclined plane complementary to the first pressing inclined plane. With this arrangement, the pressing screw is threadedly engaged with the pressing frame, and its self-locking effect of screw transmission can automatically maintain the pressing state without external force intervention. When the pressing screw is vertically screwed out, the door body can move horizontally freely through the push-pull driving device. When the pressing screw is vertically screwed in, the pressing member contacts the pressed member, so that the complementary contact of the first and second pressing inclined planes converts the vertical screwing-in force of the screw into a lateral pressing force, and presses and locks the door body.

[0014] In the above inclined plane sealing door mechanism, preferably, a sealing groove is circumferentially formed on the first sealing inclined plane of the door frame, and an elastic sealing ring is embedded in the sealing groove. The protruding height of the sealing ring is greater than the depth of the sealing groove. With this arrangement, the sealing ring can be closely attached to the second sealing inclined plane of the door body when the door body is closed, forming a reliable sealing contact and significantly improving its sealing performance.

[0015] As a general technical concept, the present invention also provides a method for opening and closing an inclined plane sealing door mechanism for a high-pressure water jet sandblasting machine case. Using the inclined plane sealing door mechanism for a high-pressure water jet sandblasting machine case, the method includes the following steps: S1. When it is necessary to close the machine case door, move the door body to a position where it fits the door frame. At this time, the first sealing inclined plane and the second sealing inclined plane are in contact and fit. Apply pressure to the door body through the side pressing device so that the second sealing inclined plane produces a wedge-shaped extrusion effect on the first sealing inclined plane, forcing the first sealing inclined plane and the second sealing inclined plane to be tightly pressed and sealed, and realizing the closing and locking of the door body and the door frame; S2. When it is necessary to open the cabinet door, relieve the pressure exerted on the door body by the side pressure device to relieve the wedge-shaped extrusion pressure between the first sealing inclined surface and the second sealing inclined surface, and move the door body to separate the first sealing inclined surface and the second sealing inclined surface, so as to open the door body and the door frame.

[0016] Compared with the prior art, the advantages of the present invention are as follows: In the present invention, the sealing surfaces of the door frame and the door body are set as complementary inclined surfaces, and by setting a side pressure device to apply pressure to the door body from one side of the door body, a wedge-shaped extrusion effect is generated to tightly press the sealing inclined surfaces for sealing, so as to realize the tight sealing and locking of the sealing surfaces of the inclined surface sealing door mechanism, with a simple and compact structure, simple operation, good sealing effect, stable and reliable, effectively solving the problems of poor sealing of the cabinet door of the sandblasting cleaning equipment and deformation of the cabinet door. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0018] Figure 1 The front view of the inclined surface sealing door mechanism for a high-pressure water jet sandblasting cabinet in the embodiment; Figure 2 The top view of the inclined surface sealing door mechanism for a high-pressure water jet sandblasting cabinet in the embodiment; Figure 3 For Figure 1 The A-A sectional view; Figure 4 For Figure 1 The B-B sectional view; Figure 5 For Figure 1 The C-C sectional view; Figure 6 For Figure 1 The D-D sectional view; Figure 7 For Figure 3 The enlarged view of part A; Figure 8 The front view of the connection of the door body, rack and inclined tie rod in the embodiment; Figure 9 The top view of the connection of the door body, rack and inclined tie rod in the embodiment.

[0019] MARKING DESCRIPTION 1. Chassis body frame; 2. Door frame; 21. Sealing groove; 22. Sealing ring; 3. Door body; 31. Compressed part; 4. Side pressure device; 41. Pressing frame; 42. Pressing assembly; 421. Pressing screw; 422. Pressing part; 423. Pressing handle; 5. Guide assembly; 51. Upper guide groove; 52. Lower guide groove; 53. Guide bar; 54. Rolling roller; 6. Driving assembly; 61. Gear rotation assembly; 62. Rack; 63. Diagonal tie rod; 611. Driving handle; 612. Gear shaft; 613. Bearing; 614. Inner circlip; 615. Gear. Detailed implementation mode

[0020] For the convenience of understanding the present invention, the following will describe the present invention more comprehensively and meticulously in conjunction with the accompanying drawings of the specification and preferred embodiments, but the protection scope of the present invention is not limited to the following specific embodiments.

[0021] It should be particularly noted that when a certain element is described as "fixed to, fixedly connected to, connected to or communicated with" another element, it can be directly fixed, fixedly connected, connected or communicated to the other element, or indirectly fixed, fixedly connected, connected or communicated to the other element through other intermediate connecting members.

[0022] Unless otherwise defined, all professional terms used hereinafter have the same meaning as commonly understood by those skilled in the art. The professional terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the protection scope of the present invention.

[0023] [[ID=I4]]Unless otherwise specifically stated, various raw materials, reagents, instruments and equipment used in the present invention can be obtained through market purchase or can be prepared by existing methods.

[0024] Embodiment: As Figures 1 to 9 shown, the inclined plane sealing door mechanism for a high-pressure water jet sandblasting chassis of this embodiment includes a door frame 2 provided on the chassis body frame 1, and a door body 3 that cooperates with the door frame 2 for sealing. The sealing surface of the door frame 2 is a first sealing inclined plane, and the sealing surface of the door body 3 is a second sealing inclined plane that cooperates with the first sealing inclined plane. One side of the door body 3 is provided with a side pressure device 4 for pressing the door body 3 from the side to cause the second sealing inclined plane to produce a wedge-shaped extrusion effect on the first sealing inclined plane, forcing the first sealing inclined plane and the second sealing inclined plane to be tightly pressed for sealing.

[0025] In this embodiment, the door frame 2 is cylindrical. The first sealing inclined plane is an elliptical annular sealing inclined plane obtained by obliquely cutting the door frame 2 with a plane that intersects obliquely with the central axis of the door frame 2. The second sealing inclined plane is an elliptical annular sealing inclined plane that cooperates with the first sealing inclined plane. There is a wedge-shaped notch at the door frame 2. The door body 3 is integrally wedge-shaped, and the side pressure device 4 is located on the side with a wider wedge shape.

[0026] In this embodiment, the door frame 2 and the door body 3 are horizontally side-opening push-pull type mating structures. A limiting member for restricting the position of one side of the door body 3 is provided on one side of the door frame 2. The side pressing device 4 is located on the other side of the door body 3. The width k of the wedge-shaped notch at the door frame 2 gradually increases from the limiting member to the side pressing device 4, and the thickness h of the wedge-shaped door body 3 gradually increases from the limiting member to the side pressing device 4.

[0027] In this embodiment, a push-pull driving device for driving the door body 3 to move horizontally relative to the door frame 2 is provided on the chassis body frame 1. The push-pull driving device includes a guiding assembly 5 for enabling the door body 3 to move horizontally relative to the door frame 2 and a driving assembly 6 for driving the movement of the door body 3.

[0028] In this embodiment, as Figure 6 shown, the guiding assembly 5 includes upper guiding grooves 51 and lower guiding grooves 52 respectively arranged in parallel on the upper end surface and the lower end surface of the door frame 2, and guiding strips 53 and rolling rollers 54 respectively arranged on the upper end surface and the lower end surface of the door body 3. The guiding strip 53 is slidably embedded in the upper guiding groove 51, and the rolling roller 54 is rotatably arranged in the lower guiding groove 52.

[0029] In this embodiment, the driving assembly 6 is arranged on the same side as the side pressing device 4. The driving assembly 6 includes a gear rotation assembly 61 and a rack 62. The gear rotation assembly 61 is arranged on the chassis body frame 1. The rack 62 is horizontally arranged along the translation direction of the door body 3. One end of the rack 62 is connected to the door body 3, and the other end is meshed and connected to the gear rotation assembly 61.

[0030] In this embodiment, as Figure 5 shown, the gear rotation assembly 61 includes a gear 615 meshed with the rack 62, a driving handle 611, a gear shaft 612, a bearing 613, and an inner circlip 614. The gear shaft 612 passes through the gear 615. One end of the gear shaft 612 is connected to the inner hole of the bearing 613, and the other end is connected to the driving handle 611. The bearing 613 is fixed in the chassis body frame 1 through the inner circlip 614.

[0031] In this embodiment, the driving assembly 6 further includes an inclined pull rod 63 for strengthening the connection between the rack 62 and the door body 3. One end of the inclined pull rod 63 is connected to the door body 3, and the other end is connected to the end of the rack 62 far from the door body 3.

[0032] In this embodiment, as Figure 2As shown in the figure, the side pressing device 4 includes a pressing frame 41 mounted on the frame of the chassis body 1, a pressing assembly 42 disposed on the pressing frame 41, and a pressed member 31 disposed on the door body 3 for bearing the pressure applied by the pressing assembly 42. The pressing assembly 42 is movably disposed on the pressing frame 41, and the pressed member 31 and the pressing assembly 42 are in contact through a pressing inclined surface. In this embodiment, the pressing frame 41 is connected to the outer sides of the upper guiding groove 51 and the lower guiding groove 52 to ensure that the door body 3 can move horizontally. The pressed member 31 and the pressing assembly 42 are provided in two groups. In other embodiments, the number of the side pressing devices 4 can be set according to the size of the door body.

[0033] In this embodiment, as Figure 4 shown, the pressing assembly 42 includes a pressing screw 421 vertically passing through the pressing frame 41 and threadedly connected thereto, a pressing member 422 disposed at one end of the pressing screw 421, and a pressing handle 423 disposed at the other end of the pressing screw 421. A first pressing inclined surface is provided on one side of the pressing member 422 close to the door frame 2, and the pressed member 31 is provided with a second pressing inclined surface complementary to the first pressing inclined surface.

[0034] In this embodiment, a cylindrical boss is provided at the end of the pressing screw 421, and the pressing member 422 is provided with a groove matching the cylindrical boss. The cylindrical boss is rotatably embedded in the groove. The pressing screw 421 can rotate in the groove through the cylindrical boss and push the pressing member 422 to move back and forth along the axial direction of the pressing screw 421.

[0035] In this embodiment, as Figure 7 shown, a sealing groove 21 is circumferentially formed on the first sealing inclined surface of the door frame 2, and an elastic sealing ring 22 is embedded in the sealing groove 21. The protruding height of the sealing ring 22 is greater than the depth of the sealing groove 21. The elastic sealing ring 22 is a circular sealing ring, which has a better sealing effect compared with the existing square groove inlaid sealing strip and is also convenient for replacing the sealing ring.

[0036] The opening and closing method of the inclined surface sealing door mechanism for the high-pressure water jet sandblasting chassis in this embodiment uses the inclined surface sealing door mechanism for the high-pressure water jet sandblasting chassis and includes the following steps: S1. When it is necessary to close the chassis door, move the door body 3 to a position where it fits the door frame 2. At this time, the first sealing inclined surface and the second sealing inclined surface are in contact and fit. Apply pressure to the door body 3 through the side pressing device 4 so that the second sealing inclined surface generates a wedge-shaped pressing effect on the first sealing inclined surface, forcing the first sealing inclined surface and the second sealing inclined surface to be tightly pressed and sealed, thereby realizing the closing and locking of the door body 3 and the door frame 2. S2. When it is necessary to open the chassis door, release the pressure applied by the side pressing device 4 to the door body 3 to release the wedge-shaped pressing force between the first sealing inclined surface and the second sealing inclined surface, and move the door body 3 to separate the first sealing inclined surface and the second sealing inclined surface, thereby realizing the opening of the door body 3 and the door frame 2.

[0037] In this embodiment, the specific steps are as follows. When it is necessary to close the chassis door, rotate the driving handle 611 of the gear rotating assembly 61, so that the rack 62 translates towards the door frame 2, driving the door body 3 to move to a position where it fits against the door frame 2. At this time, the first sealing inclined surface and the second sealing inclined surface come into contact and fit. Then rotate the pressing handle 423 of the pressing assembly 42. The pressing screw 421 rotates in the groove of the pressing member 422 and pushes the pressing member 422 to move forward. Through the self-locking of the screw drive of the pressing screw 421, the first pressing inclined surface of the pressing member 422 generates a normal pressing force and a lateral thrust on the door body 3 on the second pressing inclined surface of the pressed member 31. The lateral thrust causes the second sealing inclined surface of the door body 3 to generate a normal pressing force on the first sealing inclined surface of the door frame 2 due to the wedge extrusion effect, forcing the first sealing inclined surface and the second sealing inclined surface to be pressed and sealed, realizing the closing and locking of the door body 3 and the door frame 2. When it is necessary to open the chassis door, rotate the pressing handle 423 of the pressing assembly 42 in the reverse direction, and the pressing member 422 moves backward until it does not block the translation of the door body 3. Then rotate the driving handle 611 of the gear rotating assembly 61 in the reverse direction, so that the rack 62 drives the door body 3 to translate away from the door frame 2, realizing the opening of the door body 3 and the door frame 2.

[0038] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An inclined surface sealing door mechanism for a high-pressure water jet sandblasting machine box, comprising a door frame (2) provided on the frame (1) of the machine box body, and a door body (3) that cooperates with the door frame (2) for sealing, characterized in that: The sealing surface of the door frame (2) is a first sealing inclined surface, and the sealing surface of the door body (3) is a second sealing inclined surface that cooperates with the first sealing inclined surface. One side of the door body (3) is provided with a side pressure device (4) for pressing the door body (3) from the side to cause the second sealing inclined surface to produce a wedge-shaped extrusion effect on the first sealing inclined surface, forcing the first sealing inclined surface and the second sealing inclined surface to be tightly pressed and sealed.

2. The inclined plane sealing door mechanism according to claim 1, characterized in that: The door frame (2) is cylindrical. The first sealing inclined surface is an elliptical annular sealing inclined surface obtained by obliquely cutting the door frame (2) with a plane that intersects obliquely with the central axis of the door frame (2). The second sealing inclined surface is an elliptical annular sealing inclined surface that cooperates with the first sealing inclined surface. The door frame (2) has a wedge-shaped notch. The door body (3) is integrally wedge-shaped, and the side pressure device (4) is located on the wider side of the wedge.

3. The inclined-plane sealing door mechanism according to claim 2, characterized in that: The door frame (2) and the door body (3) are in a horizontal side-opening push-pull type matching structure. One side of the door frame (2) is provided with a limiting member for limiting the position of one side of the door body (3). The side pressure device (4) is located on the other side of the door body (3). The notch width k of the wedge-shaped notch at the door frame (2) gradually increases from the limiting member to the side pressure device (4), and the thickness h of the wedge-shaped door body (3) gradually increases from the limiting member to the side pressure device (4).

4. The inclined plane seal door mechanism according to claim 3, characterized in that: A push-pull driving device for driving the door body (3) to move horizontally relative to the door frame (2) is provided on the chassis body frame (1). The push-pull driving device includes a guiding component (5) for making the door body (3) move horizontally relative to the door frame (2) and a driving component (6) for driving the door body (3) to move.

5. The inclined plane sealing door mechanism according to claim 4, characterized in that: The guiding component (5) includes an upper guiding groove (51) and a lower guiding groove (52) that are respectively arranged in parallel on the upper end surface and the lower end surface of the door frame (2), and guiding strips (53) and rolling rollers (54) that are respectively arranged on the upper end surface and the lower end surface of the door body (3). The guiding strip (53) is slidably embedded in the upper guiding groove (51), and the rolling roller (54) is rotatably arranged in the lower guiding groove (52).

6. The inclined plane seal door mechanism according to claim 4, characterized in that: The driving component (6) is arranged on the same side as the side pressure device (4). The driving component (6) includes a gear rotation component (61) and a rack (62). The gear rotation component (61) is arranged on the chassis body frame (1). The rack (62) is horizontally arranged along the translation direction of the door body (3). One end of the rack (62) is connected to the door body (3), and the other end is meshed and connected to the gear rotation component (61).

7. The inclined plane sealing door mechanism according to any one of claims 1-6, characterized in that: The side pressure device (4) includes a pressing frame (41) erected on the chassis body frame (1), a pressing component (42) arranged on the pressing frame (41), and a pressure-receiving member (31) arranged on the door body (3) for receiving the pressure applied by the pressing component (42). The pressing component (42) is movably arranged on the pressing frame (41), and the pressure-receiving member (31) and the pressing component (42) are in contact through a pressing inclined surface.

8. The inclined plane sealing door mechanism according to claim 7, wherein: The pressing component (42) includes a pressing screw rod (421) vertically passing through the pressing frame (41) and threadedly connected thereto, a pressing member (422) provided at one end of the pressing screw rod (421), and a pressing handle (423) provided at the other end of the pressing screw rod (421). A first pressing inclined surface is provided on the side of the pressing member (422) close to the door frame (2), and the pressed member (31) is provided with a second pressing inclined surface complementary to the first pressing inclined surface.

9. The inclined plane sealing door mechanism according to any one of claims 1-6, characterized in that: A sealing groove (21) is circumferentially formed on the first sealing inclined surface of the door frame (2), and an elastic sealing ring (22) is embedded in the sealing groove (21). The protruding height of the sealing ring (22) is greater than the depth of the sealing groove (21).

10. A method for opening and closing an inclined surface sealing door mechanism of a high-pressure water jet sandblasting machine box, characterized in that: Using the inclined surface sealing door mechanism for a high-pressure water jet sandblasting machine box according to any one of claims 1-9, comprising the following steps: S1. When the machine box door needs to be closed, move the door body (3) to a position where it fits against the door frame (2). At this time, the first sealing inclined surface and the second sealing inclined surface are in contact and fit. Apply pressure to the door body (3) through the side pressing device (4) so that the second sealing inclined surface produces a wedge-shaped squeezing effect on the first sealing inclined surface, forcing the first sealing inclined surface and the second sealing inclined surface to be tightly pressed and sealed, thereby realizing the closing and locking of the door body (3) and the door frame (2). S2. When the machine box door needs to be opened, release the pressure applied by the side pressing device (4) to the door body (3) to release the wedge-shaped squeezing force between the first sealing inclined surface and the second sealing inclined surface. Move the door body (3) to separate the first sealing inclined surface and the second sealing inclined surface, thereby realizing the opening of the door body (3) and the door frame (2).

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