Novel vacuum heating oven

Abstract

The invention relates to a novel vacuum heating oven which comprises an oven body and is characterized in that two second partition plates sequentially divide a heating space in the oven body into a first heating chamber, an air exhaust communication chamber and a second heating chamber from left to right, and seven heating plate assemblies are sequentially arranged in the first heating chamber from top to bottom; the six heating plate assemblies located on the lower portion in the first heating chamber divide the first heating chamber into seven independent heating areas from top to bottom, the two heating plate assemblies are arranged in the second heating chamber up and down, and the heating plate assembly located on the lower portion in the second heating chamber divides the second heating chamber into an upper independent heating area and a lower independent heating area. The independent heating areas formed by the multiple heating plate assemblies are arranged in the first heating chamber and the second heating chamber, and only the heating areas where workpieces to be heated are placed can be vacuumized and heated during working, so that the drying efficiency can be greatly improved through the mode.

Description

Technical Field

[0001] The invention relates to an oven, in particular to a novel vacuum heating oven. Background Art

[0002] A vacuum oven is a box-type drying equipment that dries the dried material under negative pressure conditions. It uses a vacuum pump to extract air and moisture to form a vacuum state in the working chamber, lower the boiling point of water, and speed up the drying process. Nowadays, vacuum ovens are widely used in various industries and have the advantages of little pollution and no damage to the intrinsic quality of the dried items. However, existing vacuum ovens require workers to lean into the oven to load and unload materials, which is very inconvenient. Moreover, the existing vacuum ovens evacuate and heat the entire heating chamber each time they work, and the workpieces to be heated placed each time often cannot cover the entire heating space, and sometimes even only occupy a very small part. Using the existing vacuum oven for heating is not only inefficient, but also causes a huge waste of energy. Therefore, it is particularly important to design a new vacuum heating oven to solve the above problems. Summary of the invention

[0003] In order to solve the above problems, the present invention designs a new vacuum heating oven. Independent heating zones formed by a plurality of heating plate assemblies are arranged in the first heating chamber and the second heating chamber. During operation, only the heating zone where the workpiece to be heated is placed can be evacuated and heated. In this way, not only the drying efficiency can be greatly improved, but also the unnecessary waste of energy can be effectively reduced, thereby increasing practicality.

[0004] To solve the above technical problems, the present invention provides a novel vacuum heating oven, comprising an oven body, wherein the bottom of the oven body is provided with height-adjustable supporting feet, and the characteristics are as follows: inlet and outlet ports are provided at both ends of the oven body, and two second partition plates are vertically fixed in sequence inside the oven body, and the two second partition plates divide the heating space inside the oven body into a first heating chamber, an exhaust connecting chamber and a second heating chamber from left to right in sequence, the first heating chamber is connected to the inlet and outlet ports on the left side, the second heating chamber is connected to the inlet and outlet ports on the right side, and a first partition plate is vertically fixed in the exhaust connecting chamber, and the first partition plate divides the exhaust connecting chamber into a first exhaust connecting chamber on the left side. An air chamber and a second exhaust chamber on the right, exhaust holes connected to the vacuum exhaust system are provided on the inner walls of the first exhaust chamber and the second exhaust chamber, an installation room is provided in the oven body at the rear side of the heating space, the vacuum exhaust system is arranged in the installation room, a door panel structure is connected to the rear end surface of the oven body facing the installation room, seven heating plate assemblies are arranged in sequence from top to bottom in the first heating chamber, the six heating plate assemblies located at the bottom of the first heating chamber divide the first heating chamber into seven independent heating zones from top to bottom, two heating plate assemblies are arranged above and below in the second heating chamber, the heating plate assembly located at the bottom of the second heating chamber divides the second heating chamber into two independent heating zones above and below.

[0005] Further: the heating plate assembly is composed of an upper heating top plate and a heating bottom plate, the heating top plate located at the top in the first heating chamber contacts the top wall in the first heating chamber, the heating top plate located at the top in the second heating chamber contacts the top wall in the second heating chamber, the upper and lower heating zones in the first heating chamber and the second heating chamber are sealed by the heating top plates between each other, the distance between the heating top plate and the heating bottom plate in the same heating plate assembly in the first heating chamber is smaller than the distance between the heating top plate and the heating bottom plate in the same heating plate assembly in the second heating chamber, one end of the heating top plates in the first heating chamber and the second heating chamber are respectively fixed on two second partition plates, and a sealing contact rubber block is provided on the other end of the heating top plates in the first heating chamber and the second heating chamber, a slide rail is horizontally provided in each independent heating zone in the first heating chamber and the second heating chamber, and a slide rail is respectively provided on the inner walls on the front and rear sides of the heating zone, the heating bottom plate is connected to the slide rail through pulleys provided on the front and rear ends, and electric heating wires are provided in the heating top plate and the heating bottom plate.

[0006] Furthermore: the inlet and outlet ports at the left and right ends of the oven body are sealed by the first door and the second door respectively, the bottoms of the first door and the second door are provided with auxiliary walking wheels, the left and right ends of the oven body are provided with hydraulic cylinders for opening and closing the first door or the second door, one end of the heating bottom plate in the first heating chamber is fixed to the inner wall of the first door, and one end of the heating bottom plate in the second heating chamber is fixed to the inner wall of the second door, conductive contact columns are provided in the first door and the second door, the electric heating wire in the heating bottom plate in the first heating chamber is electrically connected to the conductive contact column in the first door through a lead, and the electric heating wire in the heating bottom plate in the second heating chamber is electrically connected to the conductive contact column in the second door through a lead.

[0007] Furthermore: an extended outer cover is provided at both ends of the left and right ends of the oven body, the extended outer cover is located at the rear side of the inlet and outlet and is connected to the oven body through a hinge structure, a conductive sheet is provided in the extended outer cover, a conductive contact column extends out of the box door toward one end of the extended outer cover to contact the conductive sheet, the conductive sheet extends into the installation room and is electrically connected to the distribution box, the electric heating wire in the heating top plate is also electrically connected to the distribution box, a handle and a limit lock sleeve are provided on the back of the extended outer cover, guide sleeves are provided at the back of the left and right ends of the oven body relative to the position of the limit lock sleeve, a locking rod is movably connected in the guide sleeve, one end of the locking rod is slidably connected in the guide sleeve by a first spring, and the other end of the locking rod passes through the limit lock sleeve under the action of the first spring, a threaded through hole is also provided on the outer wall of the guide sleeve, a tightening bolt is connected in the threaded through hole, the tightening bolt extends into the guide sleeve to tighten the locking rod, and switch buttons for controlling the extension and retraction of the hydraulic cylinder are provided on the back of the left and right ends of the oven body.

[0008] Furthermore: a vacuum quick-connect joint is connected to the other end of the heating base plate, and the vacuum quick-connect joint includes a joint body, a sealing lock column, a guide plate and a second spring. A guide groove is provided inside the joint body, the guide plate matches the guide groove and is piston-connected in the guide groove, the guide plate is fixed on the outer wall of the sealing lock column, the sealing lock column is connected in the guide groove by sliding up and down through the guide plate, the lower end of the sealing lock column extends out of the joint body and is movably connected with the joint body, and a sealing lock hole is also provided in the upper end of the joint body, one end of the sealing lock hole is connected with the guide groove, and the other end is open, and the upper end of the sealing lock column extends into the sealing lock hole under the action of the second spring and cooperates with it to seal, and a plug-in joint is provided on the outer wall of one side of the upper end of the joint body facing the second partition plate, the plug-in joint is connected with the guide groove, and a valve connection structure matching the plug-in joint is provided on the second partition plate relative to each heating base plate.

[0009] Furthermore: a guide through hole connected to the guide groove is provided at the bottom of the joint body, and the lower end of the sealing lock column extends out of the joint body along the guide through hole. An elastic clamping mechanism is arranged between the sealing lock column and the guide through hole. The elastic clamping mechanism includes a connecting groove provided on the inner wall of the guide through hole, a hemispherical clamping groove provided on the outer wall of the sealing lock column, a spherical clamping head and a third spring. The spherical clamping head is connected to the connecting groove through the third spring, and the spherical clamping head is clamped into the hemispherical clamping groove under the action of the third spring.

[0010] Furthermore: the valve connection structure of the joint body includes a guide groove, a connecting pipe, an annular valve core and a fourth spring provided on the second partition plate, the guide groove is opposite to the plug-in joint on the joint body, the shape of the plug-in joint matches the shape of the guide groove, one end of the connecting pipe passes through the second partition plate and is connected to the air extraction connecting chamber, the other end of the connecting pipe extends into the guide groove and is sealed, the annular valve core is piston-connected between the inner wall of the guide groove and the outer wall of the connecting pipe, the annular valve core is also connected to the guide groove through the fourth spring, a through hole is provided on the side wall of the connecting pipe in the guide groove, and the through hole is sealed by the annular valve core.

[0011] Furthermore: a mounting groove is provided at one end of the heating base plate facing the second partition plate, and a guide block matching the mounting groove is provided on the side of the joint body facing the heating base plate, the guide block is slidably connected in the mounting groove and is connected to the U-shaped frame through a fifth spring, the U-shaped frame is detachably connected to the mounting groove by bolts, a switch contact rod is horizontally connected to the end of the guide block away from the joint body, a touch switch button is embedded on the inner wall of the mounting groove, the touch switch button is electrically connected to the electric heating wire arranged in the heating base plate, a guide through hole is provided on the U-shaped frame relative to the switch contact rod, the switch contact rod passes through the U-shaped frame along the guide through hole and contacts the touch switch button.

[0012] Furthermore: a pressure protection valve is provided at the bottom of the heating base plate at one end facing the door, and the pressure protection valve includes a valve body, a valve core and a sixth spring. The valve body is composed of an upper valve body and a lower valve body detachably connected up and down, and the upper valve body is detachably installed at the bottom of the heating base plate. The valve core is piston-connected in a convex-shaped connecting chamber of the valve body, and the convex-shaped connecting chamber is formed by splicing the upper valve body and the lower valve body. The valve core is also connected to the bottom wall of the convex-shaped connecting chamber through a sixth spring. The valve bodies on the left and right sides of the convex-shaped connecting chamber are respectively provided with a first air guide channel and a second air guide channel connected thereto, and the first air guide channel is connected to an air inlet hole arranged at the bottom of the door through a third air guide channel provided inside the door. The first door and the second door are both provided with air inlet holes at the bottom, and the upper end of the convex-shaped connecting chamber is connected to a pressure protection hole provided on the heating base plate, and the second air guide channel is open at one end away from the convex-shaped connecting chamber, and the first air guide channel and the second air guide channel are sealed by the valve core.

[0013] Furthermore: a display control operation screen, a pressure alarm and a temperature alarm are arranged on the front outer wall of the oven body, and the pressure alarm and the temperature alarm are electrically connected to the display control operation screen. A temperature detection sensor and a pressure detection sensor are arranged in each independent heating zone in the first heating chamber and the second heating chamber, and the temperature detection sensor and the pressure detection sensor are electrically connected to the display control operation screen.

[0014] After adopting the above structure, the beneficial effects of the present invention are as follows:

[0015] 1. The present invention provides independent heating zones formed by a plurality of heating plate assemblies in the first heating chamber and the second heating chamber. During operation, only the heating zone where the workpiece to be heated is placed can be vacuumed and heated. This method can not only greatly improve the drying efficiency, but also effectively reduce unnecessary waste of energy, thereby increasing practicality.

[0016] 2. The present invention can control the hydraulic cylinder through a switch button, automatically open the first box door and the second box door through the hydraulic cylinder, and automatically bring the heating bottom plate in the heating plate assembly out of the oven box by using the first box door and the second box door, so that the workpiece to be heated can be placed on the heating bottom plate outside the oven box or the heated workpiece can be removed from the heating bottom plate, thereby facilitating loading and unloading.

[0017] 3. The present invention can select the corresponding first heating chamber or second heating chamber for heating according to the size of the workpiece. Through this design, targeted heating can be performed under the premise of saving resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0019] Figure 1 It is a schematic diagram of the front structure of the present invention.

[0020] Figure 2 It is a schematic diagram of the back structure of the present invention.

[0021] Figure 3 It is a schematic diagram of the internal structure of the box door after opening the box door of the present invention.

[0022] Figure 4 for Figure 3 A is an enlarged view of the middle image.

[0023] Figure 5 for Figure 3 Enlarged view of B.

[0024] Figure 6 for Figure 4 Enlarged view of C in the middle.

[0025] Figure 7 for Figure 4 Enlarged view of D in the middle.

[0026] Figure 8 This is a structural diagram of a pressure protection valve. DETAILED DESCRIPTION

[0027] like Figure 1 and Figure 3A novel vacuum heating oven shown in the figure comprises an oven body 1, the bottom of the oven body is provided with height-adjustable supporting feet 7, inlet and outlet ports are provided at both ends of the oven body, two second partition plates 19 are vertically fixed in sequence inside the oven body, and the two second partition plates divide the heating space inside the oven body from left to right into a first heating chamber, an exhaust connection chamber and a second heating chamber, the first heating chamber is connected to the inlet and outlet ports on the left, the second heating chamber is connected to the inlet and outlet ports on the right, and a first partition plate 18 is vertically fixed in the exhaust connection chamber, the first partition plate divides the exhaust connection chamber into a first exhaust chamber on the left and a second exhaust chamber on the right. The first and second vacuum chambers are provided with vacuum holes 20 connected to the vacuum vacuum system on their inner walls. An installation room is provided in the oven body at the rear side of the heating space. The vacuum vacuum system is arranged in the installation room. A door panel structure 12 is connected to the rear end surface of the oven body facing the installation room. Seven heating plate assemblies are arranged in the first heating chamber from top to bottom. The six heating plate assemblies located at the bottom of the first heating chamber divide the first heating chamber into seven independent heating zones from top to bottom. Two heating plate assemblies are arranged one above and one below in the second heating chamber. The heating plate assembly located at the bottom of the second heating chamber divides the second heating chamber into two independent heating zones. The vacuum vacuum system is composed of a vacuum pump, a vacuum main pipeline and a vacuum auxiliary pipeline. The vacuum pump is connected to the two vacuum auxiliary pipelines through the vacuum main pipeline. The two vacuum auxiliary pipelines are connected to the first and second vacuum chambers through two vacuum holes. Switch valves are provided on the vacuum main pipeline and the vacuum auxiliary pipeline. The present invention provides independent heating zones formed by a plurality of heating plate assemblies in the first heating chamber and the second heating chamber. During operation, only the heating zones where the workpieces to be heated are placed can be vacuumed and heated. This method can not only greatly improve the drying efficiency, but also effectively reduce unnecessary waste of energy, thereby increasing practicality.

[0028] like Figure 3The heating plate assembly shown is composed of an upper heating top plate 42 and a heating bottom plate 25. The heating top plate located at the top in the first heating chamber contacts the top wall in the first heating chamber, and the heating top plate located at the top in the second heating chamber contacts the top wall in the second heating chamber. The upper and lower heating zones in the first heating chamber and the second heating chamber are sealed by the heating top plates between each other. The spacing between the heating top plate and the heating bottom plate in the same heating plate assembly in the first heating chamber is smaller than the spacing between the heating top plate and the heating bottom plate in the same heating plate assembly in the second heating chamber. One end of the heating top plates in the first heating chamber and the second heating chamber are respectively fixed on two second partition plates, and a sealing contact rubber block is provided on the other end of the heating top plates in the first heating chamber and the second heating chamber. A slide rail 21 is horizontally provided in each independent heating zone in the first heating chamber and the second heating chamber, and a slide rail is respectively provided on the inner walls on the front and rear sides of the heating zone. The heating bottom plate is connected to the slide rail through pulleys provided on the front and rear ends. Electric heating wires are provided in the heating top plate 42 and the heating bottom plate 25. In each heating zone, the workpiece can be heated not only from bottom to top by heating the bottom plate, but also from top to bottom by heating the top plate. This design greatly improves the drying efficiency.

[0029] like Figure 3 The inlet and outlet ports at the left and right ends of the oven body are sealed by the first door 2 and the second door 3 respectively, and the bottoms of the first door 2 and the second door 3 are provided with auxiliary walking wheels 8. The left and right ends of the oven body are provided with hydraulic cylinders for opening and closing the first door or the second door. One end of the heating bottom plate in the first heating chamber is fixed on the inner wall of the first door, and one end of the heating bottom plate in the second heating chamber is fixed on the inner wall of the second door. The first door and the second door are provided with conductive contact posts 24. The electric heating wire in the heating bottom plate in the first heating chamber is electrically connected to the conductive contact posts in the first door through a lead wire, and the electric heating wire in the heating bottom plate in the second heating chamber is electrically connected to the conductive contact posts in the second door through a lead wire. The present invention can control the hydraulic cylinder through a switch button, automatically open the first door and the second door through the hydraulic cylinder, and automatically bring the heating bottom plate in the heating plate assembly out of the oven body by using the first door and the second door, so that the workpiece to be heated is placed on the heating bottom plate outside the oven body or the heated workpiece is removed from the heating bottom plate, which facilitates loading and unloading.

[0030] like Figure 2 and Figure 3The left and right ends of the oven body are provided with extended outer covers 4, which are located at the rear side of the inlet and outlet and are connected to the oven body through a hinge structure. A conductive sheet is provided in the extended outer cover, and a conductive contact column extends out of the door toward one end of the extended outer cover to contact the conductive sheet. The conductive sheet extends into the installation room and is electrically connected to the distribution box. The electric heating wire in the heating top plate is also electrically connected to the distribution box. A handle 13 and a limit lock sleeve 17 are provided on the back of the extended outer cover. Guide sleeves 16 are provided at the back of the left and right ends of the oven body relative to the position of the limit lock sleeve. A locking rod 15 is movably connected in the guide sleeve. One end of the locking rod is slidably connected in the guide sleeve through a first spring, and the other end of the locking rod passes through the limit lock sleeve under the action of the first spring. A threaded through hole is also provided on the outer wall of the guide sleeve. A tightening bolt is connected in the threaded through hole. The tightening bolt extends into the guide sleeve to tighten the locking rod. Switch buttons 14 for controlling the extension and retraction of the hydraulic cylinder are provided on the back of the left and right ends of the oven body. When the door needs to be opened, first separate the lock rod from the limit lock sleeve, then pull the handle backward to deflect the extended outer cover, and then press the switch button to use the hydraulic cylinder to open the door; after closing the door, push the handle to make the conductive sheet contact with the conductive contact column extending out of the door, and then extend the lock rod into the limit lock sleeve to limit the extended outer cover.

[0031] like Figure 4 A vacuum quick-connect joint is connected to the other end of the heating base plate shown in the figure, and the vacuum quick-connect joint includes a joint body 29, a sealing lock column 33, a guide plate 31 and a second spring 32. A guide groove is provided inside the joint body, and the guide plate matches the guide groove and is piston-connected in the guide groove. The guide plate is fixed on the outer wall of the sealing lock column, and the sealing lock column is connected in the guide groove by sliding up and down through the guide plate. The lower end of the sealing lock column extends out of the joint body and is movably connected with the joint body. A sealing lock hole is also provided in the upper end of the joint body, one end of the sealing lock hole is connected to the guide groove, and the other end is open. The upper end of the sealing lock column extends into the sealing lock hole under the action of the second spring and cooperates with it to seal. A plug-in joint 30 is provided on the outer wall of one side of the upper end of the joint body facing the second partition plate, and the plug-in joint is connected to the guide groove. A valve connection structure matching the plug-in joint is provided on the second partition plate relative to each heating base plate. After the workpiece to be heated is placed on the heating base plate, the sealing lock column is pulled to separate it from the sealing lock hole. After the box door is closed, the plug connector will be directly inserted into the valve connection structure to connect the guide groove with the exhaust chamber. At this time, the vacuum pump can be started to directly evacuate the heating area where the workpiece to be heated is placed; the heating base plate without the workpiece does not need to pull the sealing lock column. At this time, the sealing lock hole is in a sealed state, and the vacuum pump cannot be used to evacuate the heating area after it is started. The present invention adopts this structure to achieve targeted heating and increase practicality.

[0032] like Figure 7 A guide through hole connected to the guide groove is provided at the bottom of the joint body, and the lower end of the sealing lock column extends out of the joint body along the guide through hole. An elastic clamping mechanism is provided between the sealing lock column and the guide through hole. The elastic clamping mechanism includes a connecting groove provided on the inner wall of the guide through hole, a hemispherical clamping groove provided on the outer wall of the sealing lock column, a spherical clamping head 40 and a third spring 41. The spherical clamping head is connected to the connecting groove through the third spring, and the spherical clamping head is clamped into the hemispherical clamping groove under the action of the third spring.

[0033] like Figure 5 The valve connection structure shown includes a guide groove, a connecting pipe 25, an annular valve core 34 and a fourth spring 37 provided on the second partition plate. The guide groove is opposite to the plug-in joint on the joint body. The shape of the plug-in joint matches the shape of the guide groove. One end of the connecting pipe passes through the second partition plate and is connected to the air extraction connecting chamber. The other end of the connecting pipe extends into the guide groove and is sealed. The annular valve core is piston-connected between the inner wall of the guide groove and the outer wall of the connecting pipe. The annular valve core is also connected to the guide groove through the fourth spring. A through hole 36 is provided on the side wall of the connecting pipe in the guide groove, and the through hole is sealed by the annular valve core.

[0034] like Figure 6 The heating base plate shown in the figure is provided with a mounting groove at one end facing the second partition plate, and a guide block 28 matching the mounting groove is provided on the side of the joint body facing the heating base plate, the guide block is slidably connected in the mounting groove and connected to the U-shaped frame 26 through the fifth spring 27, the U-shaped frame is detachably connected in the mounting groove by bolts, the guide block is horizontally connected to a switch contact rod 38 at one end away from the joint body, a touch switch button 39 is embedded on the inner wall of the mounting groove, the touch switch button is electrically connected to the electric heating wire arranged in the heating base plate, a guide through hole is provided on the U-shaped frame relative to the position of the switch contact rod, and the switch contact rod passes through the U-shaped frame along the guide through hole and contacts the touch switch button. The present invention adopts this structure, and the touch switch button will automatically separate from the switch contact rod after the box door is opened, thereby automatically disconnecting the power supply to the electric heating wire in the heating base plate, so that the heating base plate extending out of the oven box body is no longer heated, which not only prevents unnecessary energy waste, but also reduces the risk of scalding to the handling personnel.

[0035] like Figure 8The bottom of the heating bottom plate facing the door is provided with a pressure protection valve 23, the pressure protection valve includes a valve body, a valve core 23-3 and a sixth spring 23-4, the valve body is composed of an upper valve body 23-1 and a lower valve body 23-2 detachably connected up and down, the upper valve body is detachably mounted at the bottom of the heating bottom plate, the valve core is piston-connected in the convex-shaped connecting chamber of the valve body, the convex-shaped connecting chamber is formed by splicing the upper valve body and the lower valve body, and the valve core is also connected to the bottom wall of the convex-shaped connecting chamber through the sixth spring. The valve bodies on the left and right sides of the convex-shaped connection chamber are respectively provided with a first air guide channel 23-6 and a second air guide channel 23-5 connected thereto. The first air guide channel is connected to the air inlet hole arranged at the bottom of the door through the third air guide channel arranged inside the door. The first door and the second door are both provided with air inlet holes at the bottom. The upper end of the convex-shaped connection chamber is connected to the pressure protection hole arranged on the heating bottom plate. The end of the second air guide channel away from the convex-shaped connection chamber is open. The first air guide channel and the second air guide channel are sealed by a valve core. The present invention adopts this structure to play a role of self-protection and prevent unnecessary damage to the workpiece caused by excessive internal and external pressure difference.

[0036] like Figure 1 A display control operation screen 11, a pressure alarm 9 and a temperature alarm 10 are arranged on the front outer wall of the oven body, and the pressure alarm 9 and the temperature alarm 10 are electrically connected to the display control operation screen. A temperature detection sensor and a pressure detection sensor are arranged in each independent heating zone in the first heating chamber and the second heating chamber, and the temperature detection sensor and the pressure detection sensor are electrically connected to the display control operation screen.

[0037] The above are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should be regarded as the protection scope of the present invention.

Claims

1. A novel vacuum heating oven, comprising an oven body (1), wherein the bottom of the oven body is provided with height-adjustable support feet (7), characterized in that: The left and right ends of the oven body are provided with inlet and outlet ports, and two second partition plates (19) are vertically fixed inside the oven body in sequence, and the two second partition plates divide the heating space inside the oven body into a first heating chamber, an exhaust connection chamber and a second heating chamber from left to right in sequence, the first heating chamber is connected to the inlet and outlet ports on the left, and the second heating chamber is connected to the inlet and outlet ports on the right, and a first partition plate (18) is vertically fixed inside the exhaust connection chamber, and the first partition plate divides the exhaust connection chamber into a first exhaust chamber on the left and a second exhaust chamber on the right, and the inner walls of the first exhaust chamber and the second exhaust chamber are The heating chamber is provided with an exhaust hole (20) connected to a vacuum exhaust system. An installation room is provided in the oven body at the rear side of the heating space. The vacuum exhaust system is arranged in the installation room. A door panel structure (12) is connected to a position on the rear end surface of the oven body facing the installation room. Seven heating plate assemblies are arranged in sequence from top to bottom in the first heating chamber. The six heating plate assemblies located at the bottom of the first heating chamber divide the first heating chamber into seven independent heating zones from top to bottom. Two heating plate assemblies are arranged in the second heating chamber, one above and one below. The heating plate assembly located at the bottom of the second heating chamber divides the second heating chamber into two independent heating zones.

2. A novel vacuum heating oven according to claim 1, characterized in that: The heating plate assembly is composed of an upper heating top plate (42) and a heating bottom plate (25). The uppermost heating top plate in the first heating chamber contacts the top wall in the first heating chamber, and the uppermost heating top plate in the second heating chamber contacts the top wall in the second heating chamber. The upper and lower heating zones in the first heating chamber and the second heating chamber are sealed by the heating top plates between each other. The spacing between the heating top plate and the heating bottom plate in the same heating plate assembly in the first heating chamber is smaller than the spacing between the heating top plate and the heating bottom plate in the same heating plate assembly in the second heating chamber. One end of the heating top plate in the first heating chamber and the second heating chamber is respectively fixed on two second partition plates. The other end of the heating top plate in the first heating chamber and the second heating chamber is provided with a sealing contact rubber block. A slide rail (21) is horizontally provided in each independent heating zone in the first heating chamber and the second heating chamber. A slide rail is respectively provided on the inner walls on the front and rear sides of the heating zone. The heating bottom plate is connected to the slide rail via pulleys provided on the front and rear ends. Electric heating wires are provided in the heating top plate (42) and the heating bottom plate (25).

3. A novel vacuum heating oven according to claim 2, characterized in that: The inlet and outlet ports at the left and right ends of the oven body are sealed respectively by the first door (2) and the second door (3); the bottoms of the first door (2) and the second door (3) are provided with auxiliary walking wheels (8); the left and right ends of the oven body are provided with hydraulic cylinders for opening and closing the first door or the second door; one end of the heating bottom plate in the first heating chamber is fixed to the inner wall of the first door; one end of the heating bottom plate in the second heating chamber is fixed to the inner wall of the second door; the first door and the second door are provided with conductive contact columns (24); the electric heating wire in the heating bottom plate in the first heating chamber is electrically connected to the conductive contact column in the first door through a lead wire; the electric heating wire in the heating bottom plate in the second heating chamber is electrically connected to the conductive contact column in the second door through a lead wire.

4. A novel vacuum heating oven according to claim 3, characterized in that: The left and right ends of the oven body are provided with extended outer covers (4), which are located at the rear side of the inlet and outlet and are connected to the oven body through a hinge structure. A conductive sheet is provided in the extended outer cover, and a conductive contact column extends out of the door toward one end of the extended outer cover to contact the conductive sheet. The conductive sheet extends into the installation room and is electrically connected to the distribution box. The electric heating wire in the heating top plate is also electrically connected to the distribution box. A handle (13) and a limit lock sleeve (17) are provided on the back of the extended outer cover. A guide sleeve (16) is provided at the back of the right two ends relative to the position of the limit lock sleeve, and a lock rod (15) is movably connected in the guide sleeve. One end of the lock rod is slidably connected in the guide sleeve through a first spring, and the other end of the lock rod passes through the limit lock sleeve under the action of the first spring. A threaded through hole is also provided on the outer wall of the guide sleeve, and a tightening bolt is connected in the threaded through hole. The tightening bolt extends into the guide sleeve to tighten the lock rod. Switch buttons (14) for controlling the extension and retraction of the hydraulic cylinder are provided on the back of the left and right ends of the oven body.

5. A novel vacuum heating oven according to claim 3, characterized in that: The other end of the heating base plate is connected to a vacuum quick-connect joint, and the vacuum quick-connect joint comprises a joint body (29), a sealing lock column (33), a guide plate (31) and a second spring (32). A guide groove is provided inside the joint body, and the guide plate matches the guide groove and is piston-connected in the guide groove. The guide plate is fixed on the outer wall of the sealing lock column, and the sealing lock column is connected in the guide groove by sliding up and down through the guide plate. The lower end of the sealing lock column extends out of the joint body and is movably connected with the joint body. A sealing lock hole is also provided in the upper end of the joint body, and one end of the sealing lock hole is connected to the guide groove, and the other end is open. The upper end of the sealing lock column extends into the sealing lock hole under the action of the second spring and cooperates with it to perform sealing. A plug-in joint (30) is provided on the outer wall of one side of the upper end of the joint body facing the second partition plate, and the plug-in joint is connected to the guide groove. A valve connection structure matching the plug-in joint is provided on the second partition plate relative to each heating base plate.

6. A novel vacuum heating oven according to claim 5, characterized in that: A guide through hole connected to the guide groove is provided at the bottom of the joint body, and the lower end of the sealing lock column extends out of the joint body along the guide through hole. An elastic clamping mechanism is provided between the sealing lock column and the guide through hole. The elastic clamping mechanism comprises a connecting groove provided on the inner wall of the guide through hole, a hemispherical clamping groove provided on the outer wall of the sealing lock column, a spherical clamping head (40) and a third spring (41). The spherical clamping head is connected to the connecting groove through the third spring, and the spherical clamping head is clamped into the hemispherical clamping groove under the action of the third spring.

7. A novel vacuum heating oven according to claim 5, characterized in that: The valve connection structure of the joint body includes a guide groove, a connecting pipe (25), an annular valve core (34) and a fourth spring (37) provided on the second partition plate. The guide groove is opposite to the plug-in connector on the joint body. The shape of the plug-in connector matches the shape of the guide groove. One end of the connecting pipe passes through the second partition plate and is connected to the air extraction connecting chamber. The other end of the connecting pipe extends into the guide groove and is sealed. The annular valve core is piston-connected between the inner wall of the guide groove and the outer wall of the connecting pipe. The annular valve core is also connected to the guide groove through the fourth spring. A through hole (36) is provided on the side wall of the connecting pipe in the guide groove. The through hole is sealed by the annular valve core.

8. A novel vacuum heating oven according to claim 5, characterized in that: The heating base plate is provided with a mounting groove at one end thereof facing the second partition plate, and a guide block (28) matching the mounting groove is provided at one side of the joint body facing the heating base plate. The guide block is slidably connected in the mounting groove and is connected to the U-shaped frame (26) through a fifth spring (27). The U-shaped frame is detachably connected to the mounting groove through bolts. A switch contact rod (38) is horizontally connected to the end of the guide block away from the joint body. A touch switch button (39) is embedded on the inner wall of the mounting groove. The touch switch button is electrically connected to the electric heating wire arranged in the heating base plate. A guide through hole is provided on the U-shaped frame at a position relative to the switch contact rod. The switch contact rod passes through the U-shaped frame along the guide through hole and contacts the touch switch button.

9. A novel vacuum heating oven according to claim 2, characterized in that: A pressure protection valve (23) is provided at the bottom of the heating bottom plate at one end facing the door, and the pressure protection valve comprises a valve body, a valve core (23-3) and a sixth spring (23-4). The valve body is composed of an upper valve body (23-1) and a lower valve body (23-2) which are detachably connected up and down. The upper valve body is detachably mounted at the bottom of the heating bottom plate. The valve core is piston-connected in a convex-shaped connecting chamber of the valve body. The convex-shaped connecting chamber is formed by splicing the upper valve body and the lower valve body. The valve core is also connected to the bottom of the convex-shaped connecting chamber through the sixth spring. The convex-shaped connecting chamber is connected to a wall, and a first air guide channel (23-6) and a second air guide channel (23-5) connected thereto are respectively provided in the valve bodies on the left and right sides of the convex-shaped connecting chamber, and the first air guide channel is connected to an air inlet hole arranged at the bottom of the door through a third air guide channel provided inside the door, and the bottoms of the first door and the second door are both provided with air inlet holes, the upper end of the convex-shaped connecting chamber is connected to a pressure protection hole provided on the heating bottom plate, and the end of the second air guide channel away from the convex-shaped connecting chamber is open, and the first air guide channel and the second air guide channel are sealed by a valve core.

10. A novel vacuum heating oven according to claim 1, characterized in that: A display control operation screen (11), a pressure alarm (9) and a temperature alarm (10) are arranged on the front outer wall of the oven body, and the pressure alarm (9) and the temperature alarm (10) are both electrically connected to the display control operation screen. A temperature detection sensor and a pressure detection sensor are arranged in each independent heating zone in the first heating chamber and the second heating chamber, and the temperature detection sensor and the pressure detection sensor are both electrically connected to the display control operation screen.

Images