A high-speed common rail vane pump stator inner surface heat treatment device

Abstract

This invention discloses a heat treatment device for the inner surface of a high-speed common rail vane pump stator, belonging to the field of metal surface treatment technology. It includes a heating furnace shell, with a driver installed on the lower inner wall of the furnace shell. A rotating rod is fixedly connected to the output end of the driver, and a heating rod is fixedly connected to the top end of the rotating rod. A placement plate is fixedly connected to the lower inner wall of the furnace shell via a support frame, and the placement plate is sleeved on the outside of the rotating rod and the heating rod. This invention uses the rotation of the inner correction plate to cause the stator to rotate accordingly, coordinating with the outer correction plate on the outside of the stator to perform real-time position correction of the stator, ensuring that the distances at all points on the stator are equal to those of the heating rod. Simultaneously, the inner correction plate moves upward, also correcting the stator in the vertical plane, improving the position correction effect. Furthermore, the outer positioning plate can move back and forth, further enhancing the correction capability, avoiding differences in the degree of heat treatment on the inner surface of the stator, and improving the overall quality of the stator.

Description

Technical Field

[0001] This invention relates to the field of metal surface treatment technology, and in particular to a heat treatment device for the inner surface of a high-speed common rail vane pump stator. Background Technology

[0002] The stator is the stationary part of an electric motor or generator. In high-speed common rail vane pumps, the stator is used to generate a rotating magnetic field. During the production process, the inner surface of the stator needs to be heat-treated to allow nitrogen to penetrate into it, forming a hard protective layer. For ease of heat treatment of the inner surface, the stator is usually fitted onto the outside of a heating rod for heating. However, existing heat treatment equipment cannot correct the position between the stator and the heating rod, resulting in differences in the distance between the stator and the heating rod at different points. This leads to variations in the degree of heat treatment, causing a decrease in stator quality and hindering the heat treatment process. Furthermore, the lack of ability to clean the slag from the inner surface of the stator during heat treatment leaves slag on the inner wall, which affects nitrogen penetration. Summary of the Invention

[0003] The purpose of this invention is to address the shortcomings of existing technologies by proposing a heat treatment device for the inner surface of the stator of a high-speed common rail vane pump.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A heat treatment device for the inner surface of the stator of a high-speed common rail vane pump includes a heating furnace shell. A driver is installed on the lower inner wall of the heating furnace shell. A rotating rod is fixedly connected to the output end of the driver. A heating rod is fixedly connected to the top end of the rotating rod. A placement plate is fixedly connected to the lower inner wall of the heating furnace shell through a support frame. The placement plate is sleeved on the outside of the rotating rod and the heating rod.

[0006] The calibration structure includes a mounting ring that slides onto the outside of the heating rod. A side plate is slidably mounted on the side wall of the placement plate. Calibration rods are fixedly connected to the side walls of both the side plate and the mounting ring. An inner calibration plate and an outer calibration plate are fixedly connected to the end faces of the calibration rods connected to the mounting ring and the side plate, respectively. An annular plate is slidably connected to the bottom end of the inner calibration plate. A reciprocating screw sleeve is rotatably connected inside the heating furnace shell. A screw slider is mechanically fitted on the inner side of the reciprocating screw sleeve. An adjusting rod is fixedly mounted on the screw slider. A transmission structure is mounted on the annular plate via a connecting bracket. The adjusting rod is fixedly connected to the placement plate via a sliding bracket. A mounting block is fixedly sleeved on the adjusting rod. A fixing pipe is fixedly connected to the side wall of the mounting block. The fixing pipe is connected to a nitrogen pump. A fixing nozzle communicating with the fixing pipe is fixedly mounted on the mounting block. A cleaning structure is mounted on the adjusting rod.

[0007] Preferably, the cleaning structure includes a connecting plate rotatably sleeved on an adjusting rod, a connecting rod fixedly connected to the side wall of the connecting plate, the connecting rod extending to the position of a connecting bracket, a connecting gear fixedly connected to the bottom end of the connecting plate, and the connecting gear sleeved on the outside of the adjusting rod, a connecting shaft rotatably connected to the bottom end of the sliding bracket via a gear bracket, an mounting gear fixedly connected to the top end of the connecting shaft, and the mounting gear meshing with the connecting gear, a connecting disc fixedly connected to the bottom end of the connecting shaft, an mounting shaft fixedly connected to the bottom end of the connecting disc, a striking rod rotatably sleeved on the outside of the mounting shaft, a striking block fixedly connected to the end face of the striking rod, a sliding sleeve slidably sleeved on the striking rod, a rotating bracket rotatably connected to the sliding sleeve, the rotating bracket fixedly connected to the bottom end of the mounting block, and a torsion spring fixedly connected between the connecting plate and the mounting block, the torsion spring sleeved on the outside of the adjusting rod.

[0008] Preferably, the striking rod is an elastic telescopic structure.

[0009] Preferably, the transmission structure includes a fixed gear fixedly sleeved on the outside of the reciprocating lead screw sleeve, the top end of the adjusting rod abutting against the annular plate, an arc-shaped rack fixedly connected to the bottom end of the connecting bracket, the connecting bracket being a telescopic structure, and the arc-shaped rack meshing with the fixed gear, a support rod fixedly connected to the bottom end of the arc-shaped rack, and the support rod being slidably connected to the heating furnace shell.

[0010] Preferably, the bottom end of the side plate extends below the placement plate, a deflection rod is fixedly connected to the side wall of the side plate, a deflection block is fixedly connected to the end face of the deflection rod, the position of the deflection block matches the arc-shaped rack, a rotating support rod is rotatably sleeved on the deflection rod, and the rotating support rod is fixedly connected to the placement plate.

[0011] Preferably, the deflection rod is a telescopic structure, and the telescopic end of the deflection rod is located between the rotating support rod and the side plate.

[0012] Preferably, a control button is fixedly connected to the side wall of the mounting block, the control button corresponds to the nitrogen pump, and an extrusion plate is fixedly connected to the connecting bracket, the position of the extrusion plate matching the control button.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] The rotation of the inner correction plate causes the stator to rotate accordingly, working in conjunction with the outer correction plate on the outside of the stator to correct the position of the stator in real time, ensuring that the distances at all points on the stator are equal to those of the heating rods. At the same time, the inner correction plate moves upward to correct the stator in the vertical plane, improving the position correction effect. It also allows the outer positioning plate to move back and forth, further improving the correction capability and preventing differences in the heat treatment degree of the inner surface of the stator, thereby improving the overall quality of the stator and facilitating the heat treatment process.

[0015] The rotation of the correction plate and the back-and-forth rotation of the connecting gear cause the connecting plate to rotate, which in turn causes the striking rod and striking block mounted on the connecting plate to continuously strike the inner surface of the stator. This breaks up and shakes off the residual slag on the inner surface of the stator, preventing the slag from adhering to the stator and affecting the heat treatment and nitriding of the stator, thus reducing the quality of the stator.

[0016] The fixed nozzle that sprays nitrogen gas moves upward along with the correction plate, and the upward movement is intermittent. In conjunction with the rotation of the stator, the fixed nozzle can spray nitrogen gas more evenly onto the inner surface of the stator, which is beneficial to nitrogen diffusion and the heat treatment of the stator. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall three-dimensional structure of a heat treatment device for the inner surface of the stator of a high-speed common rail vane pump proposed in this invention.

[0018] Figure 2 This is a three-dimensional structural schematic diagram of a heat treatment device for the inner surface of a high-speed common rail vane pump stator proposed in this invention.

[0019] Figure 3 This is a three-dimensional structural diagram of the placement plate of the heat treatment device for the inner surface of the stator of a high-speed common rail vane pump proposed in this invention.

[0020] Figure 4 This is a three-dimensional structural diagram of the correction structure of the heat treatment device for the inner surface of the stator of a high-speed common rail vane pump proposed in this invention.

[0021] Figure 5 for Figure 4 Enlarged view of point A in the middle;

[0022] Figure 6 This is a three-dimensional structural diagram of the correction structure of the heat treatment device for the inner surface of the stator of a high-speed common rail vane pump proposed in this invention.

[0023] Figure 7 for Figure 6 Enlarged view of point B in the middle;

[0024] Figure 8This is a three-dimensional structural diagram of the connecting plate of the heat treatment device for the inner surface of the stator of a high-speed common rail vane pump proposed in this invention.

[0025] In the diagram: 1. Heating furnace shell; 2. Placement plate; 3. Rotating rod; 4. Heating rod; 5. Deflection block; 6. Correction structure; 61. Mounting ring; 62. Side plate; 63. Correction rod; 64. Inner correction plate; 65. Arc rack; 66. Outer correction plate; 67. Adjusting rod; 68. Reciprocating screw sleeve; 69. Annular plate; 610. Sliding bracket; 611. Fixed gear; 612. Mounting block; 613. Fixed nozzle; 614. Fixed pipe; 615. Control button; 616. Extrusion plate; 617. Connecting bracket; 7. Cleaning structure; 71. Connecting plate; 72. Connecting rod; 73. Torsion spring; 74. Connecting gear; 75. Mounting gear; 76. Connecting shaft; 77. Connecting disc; 78. Mounting shaft; 79. Striking rod; 710. Rotating bracket; 8. Deflection rod; 9. Rotating support rod. Detailed Implementation

[0026] See Figures 1-8 A heat treatment device for the inner surface of a high-speed common rail vane pump stator includes a heating furnace shell 1. A driver is installed on the lower inner wall of the heating furnace shell 1. A rotating rod 3 is fixedly connected to the output end of the driver. A heating rod 4 is fixedly connected to the top end of the rotating rod 3. The driver drives the rotating rod 3 to rotate, causing the heating rod 4 to rotate accordingly. A placement plate 2 is fixedly connected to the lower inner wall of the heating furnace shell 1 through a support frame. The placement plate 2 is sleeved on the outside of the rotating rod 3 and the heating rod 4. The stator is placed on the placement plate 2, and its inner wall is heated by the heating rod 4, allowing nitrogen gas to penetrate into its inner wall and form a hard protective layer. This method is a conventional stator surface heat treatment method, so it will not be described in detail.

[0027] like Figure 3 , Figure 4 and Figure 5 As shown, the correction structure 6 includes a mounting ring 61 that is slidably sleeved on the outside of the heating rod 4. A side plate 62 is slidably mounted on the side wall of the placement plate 2, and the side plate 62 and the placement plate 2 are elastically connected, meaning that the side plate 62 can automatically reset after its position changes. Correction rods 63 are fixedly connected to the side walls of both the side plate 62 and the mounting ring 61. The correction rods 63 are elastically telescopic structures to facilitate the placement of the stator on the placement plate 2. An inner correction plate 64 and an outer correction plate 66 are fixedly connected to the end faces of the correction rods 63 that are connected to the mounting ring 61 and the side plate 62, respectively. An annular plate 69 is slidably connected to the bottom end of the inner correction plate 64. The surface of the placement plate 2 is smooth, so the friction between the stator and the placement plate 2 is small. The friction between the inner correction plate 64 and the stator can drive the stator to rotate, but the friction between the inner correction plate 64 and the stator is insufficient to overcome the weight of the stator. Therefore, when the inner correction plate 64 moves up and down, the stator will not move accordingly. (Refer to the attached diagram.) Figure 3The inner correction plate 64 can slide linearly left and right on the annular plate 69. A reciprocating lead screw sleeve 68 is rotatably connected inside the heating furnace shell 1. A lead screw slider is mechanically fitted on the inner side of the reciprocating lead screw sleeve 68. An adjusting rod 67 is fixedly installed on the lead screw slider. The adjusting rod 67 is limited by the sliding bracket 610 and cannot rotate. Therefore, when the reciprocating lead screw sleeve 68 rotates, the adjusting rod 67 can move up and down relative to the sliding bracket 610. The annular plate 69 is equipped with a transmission structure through the connecting bracket 617. The adjusting rod 67 is connected to the sliding bracket 610 through the sliding bracket 610. The movable bracket 610 is fixedly connected to the placement plate 2. The sliding bracket 610 is slidably sleeved on the outside of the adjusting rod 67. The sliding bracket 610 limits the adjusting rod 67 so that it cannot rotate and does not affect the up and down movement of the adjusting rod 67. The mounting block 612 is fixedly sleeved on the adjusting rod 67. The side wall of the mounting block 612 is fixedly connected to the fixing pipe 614. The fixing pipe 614 is connected to the nitrogen pump through a hose. The mounting block 612 is fixedly installed with a fixed nozzle 613 that communicates with the fixing pipe 614. The adjusting rod 67 is equipped with a cleaning structure 7.

[0028] When the heating rod 4 rotates, the mounting ring 61, the corresponding correction rod 63, and the inner correction plate 64 rotate, causing the stator to rotate accordingly. This, in conjunction with the outer correction plate 66, corrects the position of the stator, ensuring that the distance between all parts of the stator and the heating rod 4 is the same, resulting in more uniform heating of the stator and better heat treatment. Simultaneously, as the inner correction plate 64 rotates, the connecting bracket 617 and the transmission structure operate accordingly, causing the adjusting rod 67 to rise intermittently. During the rising of the adjusting rod 67, the nitrogen pump pumps nitrogen from the fixed pipe 614 and then sprays it out from the fixed nozzle 6134. In conjunction with the rotation of the stator, nitrogen is sprayed onto various parts of the inner wall of the stator, facilitating nitrogen penetration into the inner wall of the stator. Furthermore, the movement of the inner correction plate 64 can also correct the position of the stator in real time on the vertical plane.

[0029] like Figure 6 , Figure 7 and Figure 8As shown, the cleaning structure 7 includes a connecting plate 71 rotatably sleeved on the adjusting rod 67. A connecting rod 72 is fixedly connected to the side wall of the connecting plate 71. The connecting rod 72 extends to the position of the connecting bracket 617. When the connecting bracket 617 moves to the connecting rod 72, it will squeeze the connecting rod 72, causing it to rotate around the connecting plate 71 as the center, until the connecting bracket 617 separates from the connecting rod 72. A connecting gear 74 is fixedly connected to the bottom end of the connecting plate 71, and the connecting gear 74 is sleeved on the outside of the adjusting rod 67. The connecting gear 74 is not connected to the adjusting rod 67. The bottom end of the mounting block 612 is supported by the gear. A connecting shaft 76 is rotatably connected to the frame. A mounting gear 75 is fixedly connected to the top of the connecting shaft 76, and the mounting gear 75 meshes with a connecting gear 74. The gear bracket is L-shaped and does not contact the connecting plate 71, extending from one side of the connecting plate 71 to its underside. The diameter of the connecting gear 74 is larger than that of the mounting gear 75. Through the gear transmission ratio setting, a small rotation of the connecting gear 74 causes the mounting gear 75 to rotate one revolution. A connecting disc 77 is fixedly connected to the bottom of the connecting shaft 76, and a mounting shaft 78 is fixedly connected to the bottom of the connecting disc 77. A striking rod 79 is rotatably sleeved on the outer side of the stator. A striking block is fixedly connected to the end face of the striking rod 79. A sliding sleeve is slidably sleeved on the striking rod 79, and a rotating bracket 710 is rotatably connected to the sliding sleeve. The striking rod 79 has an elastic telescopic structure, and the sliding sleeve is installed at the telescopic end of the striking rod 79. When the striking block strikes the inner wall of the stator, the striking rod 79 will retract, and the sliding sleeve will slide on the striking rod 79 to ensure that the position of the sliding sleeve relative to the connecting plate 71 remains unchanged. At the same time, when the mounting shaft 78 rotates with the connecting plate 77, the end of the striking rod 79 connected to the mounting shaft 78 will move accordingly. At this time, the sliding sleeve acts as a fulcrum, causing the other end of the striking rod 79 to move in the opposite direction. The rotating bracket 710 is rotatably connected to the sliding sleeve, so that the sliding sleeve rotates with the striking rod 79, avoiding interference between the movement of the sliding sleeve and the striking rod 79. The rotating bracket 710 is fixedly connected to the bottom end of the mounting block 612. A torsion spring 73 is fixedly connected between the connecting plate 71 and the mounting block 612. The torsion spring 73 is sleeved on the outside of the adjusting rod 67, and the torsion spring 73 can reset the connecting plate 71. The striking rod 79 has an elastic telescopic structure to prevent damage to the striking block.

[0030] As the connecting bracket 617 rotates, it squeezes the connecting rod 72, causing it to rotate around the connecting plate 71 until the connecting bracket 617 separates from the connecting rod 72. At the same time, the torsion spring 73 deforms. When the connecting bracket 617 separates from the connecting rod 72, the elastic force of the torsion spring 73 returns it to its original position. During the rotation of the connecting rod 72 and the connecting plate 71, the connecting plate 71 drives the connecting gear 74 to rotate, causing the mounting gear 75 meshing with the connecting gear 74 to rotate, which in turn causes the connecting shaft 76 and the connecting disc 77 to rotate. When the connecting disc 77 rotates, one end of the striking rod 79 moves accordingly. The striking rod 79 strikes the inner wall of the stator with the sliding sleeve as the fulcrum, breaking and shaking off the slag that appears on the surface of the stator during the heat treatment process, thus cleaning it and facilitating the heat treatment process.

[0031] like Figure 3 and Figure 4 As shown, the transmission structure includes a fixed gear 611 fixedly sleeved on the outside of the reciprocating screw sleeve 68, an adjusting rod 67 whose top end abuts against an annular plate 69, the adjusting rod 67 not connected to the annular plate 69, the upward movement of the adjusting rod 67 can push the annular plate 69 to move together, an arc-shaped rack 65 is fixedly connected to the bottom end of the connecting bracket 617, the connecting bracket 617 is a telescopic structure, and the arc-shaped rack 65 meshes with the fixed gear 611, a support rod is fixedly connected to the bottom end of the arc-shaped rack 65, the support rod is slidably connected to the lower inner wall of the heating furnace shell 1, the support rod can rotate with the arc-shaped rack 65, that is, the support rod can slide annularly on the lower inner wall of the heating furnace shell 1, the support rod cooperates with the connecting bracket 617 to ensure that the arc-shaped rack 65 is always on the same plane as the fixed gear 611, and the two can mesh;

[0032] The connecting bracket 617 drives the arc rack 65 to rotate. When the arc rack 65 rotates, it will mesh with the fixed gear 611, causing the fixed gear 611 to rotate until the two are separated. Therefore, the fixed gear 611 will rotate intermittently, causing the reciprocating screw sleeve 68 connected to the fixed gear 611 to rotate intermittently as well.

[0033] like Figure 3 As shown, the bottom end of the side plate 62 extends below the placement plate 2. A deflection rod 8 is fixedly connected to the side wall of the side plate 62, and a deflection block 5 is fixedly connected to the end face of the deflection rod 8. The position of the deflection block 5 matches the arc-shaped rack 65. A rotating support rod 9 is rotatably sleeved on the deflection rod 8, and the rotating support rod 9 is fixedly connected to the placement plate 2. The deflection rod 8 is a telescopic structure, and the telescopic end of the deflection rod 8 is located between the rotating support rod 9 and the side plate 62 to avoid the movement of the deflection rod 8 from conflicting with the movement of the side plate 62, which could lead to damage to the components.

[0034] When the arc rack 65 rotates to the position of the deflection block 5, the rotation of the arc rack 65 will cause the deflection block 5 to rotate accordingly, causing the deflection rod 8 fixedly connected to the deflection block 5 to rotate together. In conjunction with the rotating support rod 9, the side plate 62 is moved. The side plate 62 can be reset after moving, so it can move back and forth to further correct the position of the stator.

[0035] like Figure 4 As shown, a control button 615 is fixedly connected to the side wall of the mounting block 612. The control button 615 corresponds to the nitrogen pump. A compression plate 616 is fixedly connected to the connecting bracket 617. The position of the compression plate 616 matches that of the control button 615. The control button 615 and the nitrogen pump are existing matching equipment. Under normal conditions, the nitrogen pump does not run. However, after the control button 615 is pressed, the nitrogen pump will start for a period of time, allowing nitrogen to be pumped out within a certain period of time. The control button 615 is elastic and can be used for... Automatic reset: The control button 615 is an existing control switch structure, so it will not be described in detail. As the connecting bracket 617 rotates, the extrusion plate 616 rotates accordingly. When the extrusion plate 616 rotates, it will extrude the control button 615, thereby pressing the control button 615 and causing the nitrogen pump to run for a period of time. The nitrogen pump will pump out nitrogen. At the same time, as the extrusion plate 616 rotates, the extrusion plate 616 separates from the control button 615. At this time, the control button 615 resets. Therefore, after a period of time, the nitrogen pump stops running.

[0036] In this invention, when the device is in use, the stator is first placed on the placement plate 2, and its inner wall is heated by the heating rod 4. Then, the driver is started, and the driver drives the rotating rod 3 to rotate, so that the heating rod 4 rotates accordingly. When the heating rod 4 rotates, the mounting ring 61, the corresponding correction rod 63, and the inner correction plate 64 rotate, so that the stator rotates accordingly. In conjunction with the outer correction plate 66, the position of the stator is corrected so that the distance between all parts of the stator and the heating rod 4 is the same, so that the stator is heated more evenly and the heat treatment effect of the stator is better.

[0037] Simultaneously, as the inner correction plate 64 rotates, the annular plate 69 and the connecting bracket 617 rotate, thereby driving the arc-shaped rack 65 to rotate. When the arc-shaped rack 65 rotates, it will mesh with the fixed gear 611, causing the fixed gear 611 to rotate until the two separate. Therefore, the fixed gear 611 will rotate intermittently, causing the adjusting rod 67 to rise intermittently. When the adjusting rod 67 rises, it will push the annular plate 69 and the inner correction plate 64 to move upward. The upward movement of the inner correction plate 64 can also correct the position of the stator in real time on the vertical plane.

[0038] At the same time, when the arc rack 65 rotates to the position of the deflection block 5, the rotation of the arc rack 65 will cause the deflection block 5 to rotate accordingly, causing the deflection rod 8 fixedly connected to the deflection block 5 to rotate together, which, together with the rotating support rod 9, drives the side plate 62 to move. The side plate 62 can be reset after moving, so it can move back and forth to further correct the position of the stator.

[0039] Furthermore, as the connecting bracket 617 rotates, it will squeeze the connecting rod 72, causing it to rotate around the connecting plate 71 as the center, until the connecting bracket 617 separates from the connecting rod 72. At the same time, the torsion spring 73 deforms. When the connecting bracket 617 separates from the connecting rod 72, the elastic force of the torsion spring 73 returns it to its original position. During the rotation of the connecting rod 72 and the connecting plate 71, the connecting plate 71 will drive the connecting gear 74 to rotate, causing the mounting gear 75 meshing with the connecting gear 74 to rotate, causing the connecting shaft 76 and the connecting disc 77 to rotate. When the connecting disc 77 rotates, it will cause one end of the striking rod 79 to move accordingly. The striking rod 79 uses the sliding sleeve as a fulcrum to strike the inner wall of the stator, breaking and shaking off the slag that appears on the surface of the stator during the heat treatment process, cleaning it to facilitate the heat treatment process.

[0040] In addition, during the upward movement of the adjusting rod 67, the rotation of the connecting bracket 617 will cause the extrusion plate 616 to rotate accordingly. When the extrusion plate 616 rotates, it will press the control button 615, thereby pressing the control button 615 and causing the nitrogen pump to run for a period of time. The nitrogen pump will pump out nitrogen and then spray it out from the fixed nozzle 613. In conjunction with the rotation of the stator, nitrogen will be sprayed on various parts of the inner wall of the stator so that the nitrogen can penetrate into the inner wall of the stator and form a hard protective layer on the inner wall during the heat treatment process.

Claims

1. A heat treatment device for the inner surface of the stator of a high-speed common rail vane pump, comprising a heating furnace shell (1), characterized in that, A driver is installed inside the furnace shell (1). A rotating rod (3) is fixedly connected to the output end of the driver. A heating rod (4) is fixedly connected to the rotating rod (3). A placement plate (2) is fixedly connected inside the furnace shell (1) through a support frame. The placement plate (2) is sleeved on the outside of the rotating rod (3) and the heating rod (4). The correction structure (6) includes a mounting ring (61) that is slidably sleeved on the outside of the heating rod (4). A side plate (62) is slidably mounted on the placement plate (2). A correction rod (63) is fixedly connected to both the side plate (62) and the mounting ring (61). An inner correction plate (64) and an outer correction plate (66) are fixedly connected to the correction rod (63) that is connected to the mounting ring (61) and the side plate (62). An annular plate (69) is slidably connected to the inner correction plate (64). A reciprocating screw sleeve (68) is rotatably connected inside the heating furnace shell (1). A screw slider is mechanically fitted on the inner side of the reciprocating screw sleeve (68). An adjustment mechanism is fixedly mounted on the screw slider. The rod (67), the annular plate (69) is equipped with a transmission structure through the connecting bracket (617), the adjusting rod (67) is fixedly connected to the placement plate (2) through the sliding bracket (610), the sliding bracket (610) is fixedly connected to the placement plate (2), and the sliding bracket (610) is slidably connected to the adjusting rod (67), the adjusting rod (67) is fixedly sleeved with an installation block (612), the side wall of the installation block (612) is fixedly connected with a fixing pipe (614), the fixing pipe (614) is connected to a nitrogen pump, the installation block (612) is fixedly installed with a fixing nozzle (613) communicating with the fixing pipe (614), and the adjusting rod (67) is equipped with a cleaning structure (7).

2. The heat treatment device for the inner surface of the stator of a high-speed common rail vane pump according to claim 1, characterized in that, The cleaning structure (7) includes a connecting plate (71) rotatably sleeved on an adjusting rod (67), a connecting rod (72) fixedly connected to the connecting plate (71), the connecting rod (72) extending to the position of the connecting bracket (617), a connecting gear (74) fixedly connected to the connecting plate (71), and the connecting gear (74) sleeved on the outside of the adjusting rod (67). The sliding bracket (610) is rotatably connected to a connecting shaft (76) via a gear bracket. An mounting gear (75) is fixedly connected to the upper end of the connecting shaft (76), and the mounting gear (75) meshes with the connecting gear (74). A connecting plate (77) is fixedly connected to the connecting shaft (76), and an mounting shaft (78) is fixedly connected to the connecting plate (77). A striking rod (79) is rotatably sleeved on the mounting shaft (78). A striking block is fixedly connected to the end face of the striking rod (79). A sliding sleeve is slidably sleeved on the striking rod (79). A rotating bracket (710) is rotatably connected to the sliding sleeve. The rotating bracket (710) is fixedly connected to the mounting block (612). A torsion spring (73) is fixedly connected between the connecting plate (71) and the mounting block (612). The torsion spring (73) is sleeved on the outside of the adjusting rod (67).

3. The heat treatment device for the inner surface of the stator of a high-speed common rail vane pump according to claim 2, characterized in that, The striking rod (79) is an elastic telescopic structure.

4. The heat treatment device for the inner surface of the stator of a high-speed common rail vane pump according to claim 1, characterized in that, The transmission structure includes a fixed gear (611) fixedly sleeved on a reciprocating screw sleeve (68), an adjusting rod (67) abutting against an annular plate (69), an arc-shaped rack (65) fixedly connected to a connecting bracket (617), the connecting bracket (617) being a telescopic structure, and the arc-shaped rack (65) meshing with the fixed gear (611), a support rod fixedly connected to the arc-shaped rack (65), and the support rod being slidably connected to the heating furnace shell (1).

5. The heat treatment device for the inner surface of the stator of a high-speed common rail vane pump according to claim 1, characterized in that, The bottom end of the side plate (62) extends below the placement plate (2). A deflection rod (8) is fixedly connected to the side plate (62). A deflection block (5) is fixedly connected to the end face of the deflection rod (8). The position of the deflection block (5) matches the arc-shaped rack (65). A rotating support rod (9) is rotatably sleeved on the deflection rod (8). The rotating support rod (9) is fixedly connected to the placement plate (2).

6. The heat treatment device for the inner surface of the stator of a high-speed common rail vane pump according to claim 5, characterized in that, The deflection rod (8) is a telescopic structure, and the telescopic end of the deflection rod (8) is located between the rotating support rod (9) and the side plate (62).

7. The heat treatment device for the inner surface of the stator of a high-speed common rail vane pump according to claim 1, characterized in that, A control button (615) is fixedly connected to the mounting block (612), the control button (615) corresponds to the nitrogen pump, and an extrusion plate (616) is fixedly connected to the connecting bracket (617), the position of the extrusion plate (616) matches that of the control button (615).

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