Chemical raw material feeding device and equipment
By designing a slidingly connected chemical raw material feeding device, the problems of raw material suspension pollution and dust scattering during the synthesis of polyimidic acid raw materials are solved, sealed and transported raw materials, and the reaction quality and production safety are improved.
Patent Information
- Application Number
- CN202421038944.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-13
- Publication Date
- 2024-12-27
- Estimated Expiration
- 2034-05-13
AI Technical Summary
During the synthesis of polyimidic acid raw materials, the cleanliness requirements inside the reactor are high, but when artificial feeding, it is easy to cause airborne particulate pollution, resulting in slurry pollution and particulate foreign matter in the finished product, and the dust scatters are harmful to human health.
Design a chemical raw material feeding device, by setting a slidingly connected first conveying pipe and reactor feeding port, the raw material is directly transported to the reactor inside, avoiding the raw material suspended and attached to the kettle wall, and passing through sealed storage tanks and conveying pipelines Ensure that the materials are sealed throughout the process to prevent air pollution.
It effectively avoids the agglomeration and pollution of raw materials in the reactor, improves the quality of polymerization reaction, reduces the harm of dust scattering to the human body, and improves production safety and quality.
Smart Images
Figure CN222240170U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of chemical equipment, and in particular to a chemical raw material feeding device and equipment. Background Art
[0002] In the process of synthesizing polyimide acid raw materials, there are often high cleanliness requirements for the inside of the reactor. However, in the process of feeding, the feeding port is usually opened to manually feed the raw materials. In the process of feeding, suspended particles in the air often mix into the reactor, causing the polymerized slurry to be contaminated, resulting in a large number of particles and foreign matter on the membrane surface during the back-end polyimide acid casting process.
[0003] During the synthesis of polyimide acid raw materials, it is usually necessary to manually feed the raw materials at the feed port of the reactor; however, most of these raw materials are powders and particles, which are easily suspended in the air when poured into the reactor and attached to the inner wall and top of the reactor. Moreover, the top of the reactor is often difficult to clean. Over time, the raw materials attached to the inner wall of the reactor agglomerate in the reactor and fall into the reactor, causing the failure of the synthesis of polyimide acid slurry. In addition, when manually feeding the raw materials at the feed port of the reactor, there is a problem that dust is scattered in the air and easily inhaled into the human body, causing harm (because most of the raw materials for producing polyimide acid are harmful to human health, such as pyromellitic anhydride, 4,4'-diaminodiphenyl ether and other raw materials). Utility Model Content
[0004] The purpose of the embodiments of the present application is to provide a chemical raw material feeding device to solve the problem that the powder fed into the existing reactor is easily agglomerated on the inner wall of the reactor and falls into the reactor, causing the failure of the synthesis of polyimide acid slurry.
[0005] Another purpose of the embodiments of the present application is to provide a chemical raw material feeding device to solve the problem that the feeding of existing reactors is easily contaminated by suspended particles in the air.
[0006] In a first aspect, the present application provides a chemical raw material feeding device, comprising:
[0007] A reaction kettle having a feeding port; and
[0008] A first conveying pipe is slidably connected to the feeding port;
[0009] The first delivery pipe has a first end and an opposite second end; the first end is located outside the reactor, and the second end can be extended to the inside of the reactor by sliding.
[0010] In the above technical scheme, the chemical raw material feeding device of the present application is slidably connected to the feeding port by setting a first conveying pipe; the first conveying pipe has a first end and a second end relative to the first end; the first end is located outside the reactor, and the second end can extend to the inside of the reactor by sliding, so that the raw materials can be directly transported to the inside of the reactor, thereby greatly improving the problem that the raw material powder is easily suspended in the air when poured into the reactor and then adheres to the inner wall and top of the reactor and agglomerates; thereby solving the problem of failure of the synthesis of polyimide acid slurry caused by the agglomerated raw materials falling into the reactor.
[0011] In other embodiments of the present application, the chemical raw material feeding device includes a second delivery pipe installed outside the reactor and connected to the feeding port;
[0012] The first delivery pipe is arranged outside the second delivery pipe, and the first delivery pipe is slidably connected with the second delivery pipe.
[0013] In other embodiments of the present application, the above-mentioned chemical raw material feeding device includes: a driving part;
[0014] The driving part is drivingly connected to the first conveying pipe; the driving part is configured to drive the first conveying pipe to slide along the axial direction of the second conveying pipe.
[0015] In other embodiments of the present application, the chemical raw material feeding device includes: a track and a sliding member;
[0016] The sliding member is transmission-connected to the driving part; the first conveying pipe is transmission-connected to the sliding member; the sliding member is installed on the track; the extending direction of the track is the same as the axial direction of the second conveying pipe.
[0017] In other embodiments of the present application, the driving part includes a pneumatic valve; the pneumatic valve is connected to the sliding member through an air pipe transmission.
[0018] In other embodiments of the present application, the chemical raw material feeding device includes: an air blowing valve;
[0019] The blowing valve is installed on the second delivery pipe and is used for adding pressure to the second delivery pipe.
[0020] In other embodiments of the present application, the chemical raw material feeding device comprises: a storage tank; a second conveying pipe having a feed inlet and a discharge outlet relative to the feed inlet;
[0021] The material storage tank is connected to the feed port of the second conveying pipe.
[0022] In other embodiments of the present application, a rotary valve is provided at the feed port of the second conveying pipe.
[0023] In other embodiments of the present application, the chemical raw material feeding device includes a stirring part;
[0024] The stirring part comprises a stirring member, and the stirring member is arranged inside the reaction kettle.
[0025] In other embodiments of the present application, the axis of the stirring member is parallel to the axial direction of the second conveying pipe.
[0026] In other embodiments of the present application, the stirring portion includes a stirring motor; the stirring motor is transmission-connected to the stirring member, and is used to drive the stirring member to rotate around its axis.
[0027] In a second aspect, the present application provides a chemical raw material feeding device, including the chemical reaction device provided in the first aspect; and
[0028] Raw material conveying device; the raw material conveying device is connected to the inlet end of the storage tank.
[0029] In the above technical solution, when it is necessary to feed materials into the reactor, the storage tank is connected to the raw material conveying device, which can achieve sealing of the materials and prevent the materials from being contaminated by foreign matter such as suspended particles in the air; when the first conveying pipe reaches the preset position, the valve 121 is opened, and the materials can reach the reactor through the second conveying pipe and the first conveying pipe in turn. During the feeding process, the materials are sealed throughout the process and do not come into contact with the air, and the feeding port of the reactor does not need to be opened and closed; thus, it can effectively prevent foreign matter from entering the reactor (such as suspended particles in the air) and contaminating the reactor after the raw materials come into contact with the air; thereby improving the production quality and avoiding cross contamination. It is particularly suitable for polyimide acid polymerization reactions, and can effectively prevent suspended particles in the air from directly entering the reactor and causing cross contamination; greatly improving the quality of the polymerization reaction. BRIEF DESCRIPTION OF THE DRAWINGS
[0030] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.
[0031] Figure 1 A schematic structural diagram of a first state of a chemical raw material feeding device provided in an embodiment of the present application;
[0032] Figure 2 A structural schematic diagram of the second state of a chemical raw material feeding device provided in an embodiment of the present application.
[0033] Icons: 100-chemical raw material feeding device; 110-reactor; 120-second conveying pipe; 121-valve; 130-first conveying pipe; 140-storage tank; 150-stirring part; 151-stirring element; 152-stirring motor; 160-driving part; 161-air pipe; 170-track; 171-limiting element; 180-sliding element; 190-blow valve. DETAILED DESCRIPTION
[0034] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.
[0035] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.
[0036] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.
[0037] In the description of the embodiments of the present application, it should be understood that the terms "up", "left", "right", "horizontal", "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the products of the application are conventionally placed when in use, or are the orientations or positional relationships conventionally understood by those skilled in the art. They are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.
[0038] Furthermore, the terms “first”, “second”, etc. are merely used for distinguishing descriptions and should not be understood as indicating or implying relative importance.
[0039] In the description of the embodiments of the present application, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be a connection between the two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.
[0040] Please refer to Figure 1-2 The embodiment of the present application provides a chemical raw material feeding device, comprising: a reactor 110 and a first delivery pipe 130. The reactor 110 has a feeding port. The first delivery pipe 130 is slidably connected to the feeding port. The first delivery pipe 130 has a first end and a second end opposite to the first end; the first end is located outside the reactor 110, and the second end can be extended to the inside of the reactor 110 by sliding.
[0041] In the above technical scheme, the chemical raw material feeding device of the present application is slidably connected to the feeding port by setting a first conveying pipe; the first conveying pipe has a first end and a relative second end; the first end is located outside the reactor, and the second end can extend to the inside of the reactor by sliding, so that the raw materials can be directly transported to the inside of the reactor, thereby greatly improving the problem that the raw material powder is easily suspended in the air when poured into the reactor and then adheres to the inner wall and top of the reactor and agglomerates; thereby solving the problem of failure of the synthesis of polyimide acid slurry caused by the agglomerated raw materials falling into the reactor.
[0042] Please refer to Figure 1-2 Some embodiments of the present application provide a chemical raw material feeding device 100, comprising: a reactor 110, a second delivery pipe 120 and a first delivery pipe 130. The reactor 110 has a feeding port; the second delivery pipe 120 is installed at the feeding port of the reactor 110. The first delivery pipe 130 is arranged outside the second delivery pipe 120, and the first delivery pipe 130 is slidably connected to the second delivery pipe 120; the first delivery pipe 130 can slide to the discharge port of the second delivery pipe 120 as an extension pipe of the second delivery pipe 120, and extend into the reactor 110.
[0043] In the above technical solution, a first conveying pipe 130 is provided to be slidably connected to the second conveying pipe 120; the first conveying pipe 130 can slide to the discharge port of the second conveying pipe 120 as an extension pipe of the second conveying pipe 120, and extend into the reactor 110, so that the raw materials can be directly conveyed to the inside of the reactor, thereby greatly improving the problem that the raw material powder is easily suspended in the air when poured into the reactor and then adheres to the inner wall and the top of the reactor and agglomerates; thereby solving the problem of failure of the synthesis of the polyimide acid slurry caused by the agglomerated raw materials falling into the reactor.
[0044] Further, refer to Figure 1 In some embodiments of the present application, the reactor 110 is barrel-shaped, and a cover is provided on the top of the reactor 110, and a feeding port is opened on the cover.
[0045] The size of the feeding port matches the outer diameter of the first conveying pipe 130, so that the first conveying pipe 130 is sleeved in the feeding port. Furthermore, the outer diameter of the second conveying pipe 120 matches the outer diameter of the first conveying pipe 130, so that the second conveying pipe 120 is sleeved in the first conveying pipe 130; and the first conveying pipe 130 can slide along the axial direction of the second conveying pipe 120. When it is necessary to feed into the reactor 110, the first conveying pipe 130 first slides down along the second conveying pipe 120 to the discharge end of the second conveying pipe 120. At this time, the first conveying pipe 130 can be used as an extension pipe of the second conveying pipe 120 and extend to the inside of the reactor 110. Then, the material can be fed into the second conveying pipe 120, so that the material passes through the second conveying pipe 120 and the first conveying pipe 130 in turn to reach the reactor 110, so that the raw materials can be accurately transported directly to the inside of the reactor.
[0046] Furthermore, in some embodiments of the present application, the chemical raw material feeding device includes a stirring portion 150 ; the stirring portion 150 includes a stirring element 151 , and the stirring element 151 is disposed inside the reaction kettle 110 .
[0047] Further, refer to Figure 1 In some embodiments of the present application, the axis L1 of the stirring member 151 is parallel to the axial direction L of the second conveying pipe 120 .
[0048] Furthermore, in some embodiments of the present application, the stirring portion 150 includes a stirring motor 152 ; the stirring motor 152 is transmission-connected to the stirring member 151 , and is used to drive the stirring member 151 to rotate around its axis L1 .
[0049] Furthermore, in some embodiments of the present application, the stirring member 151 is disposed in the middle of the reactor 110; the feed port of the reactor 110 is opened on one side of the top of the reactor; and the second delivery pipe 120 is disposed on one side of the top of the reactor.
[0050] Furthermore, in some embodiments of the present application, the chemical raw material feeding device includes: a driving unit 160 .
[0051] Furthermore, in some embodiments of the present application, the driving unit 160 is transmission-connected to the first conveying pipe 130 ; the driving unit 160 is configured to drive the first conveying pipe 130 to slide up and down along the second conveying pipe 120 .
[0052] Furthermore, in some embodiments of the present application, the chemical raw material feeding device includes: a track 170 and a sliding member 180 .
[0053] Furthermore, in some embodiments of the present application, the sliding member 180 is transmission-connected to the driving portion 160 ; the first conveying pipe 130 is transmission-connected to the sliding member 180 ; the sliding member 180 is installed on the track 170 ; the extension direction of the track 170 is the same as the axial direction L of the second conveying pipe 120 .
[0054] Furthermore, in some embodiments of the present application, the driving unit 160 includes a pneumatic valve; the pneumatic valve is connected to the sliding member 180 through an air pipe 161.
[0055] Exemplarily, in the illustrated embodiment, relative to the feeding port of the reactor 110, the above-mentioned track 170 is arranged at a position closer to the top edge of the reactor 110, and the track 170 and the second conveying pipe 120 and the first conveying pipe 130 are arranged on the same side of the stirring member 151, thereby facilitating the connection between the driving part 160, the track 170 and the first conveying pipe 130, making the structure of the entire chemical raw material feeding device 100 more compact and small.
[0056] Furthermore, in some embodiments of the present application, the sliding member 180 is a pneumatic sliding member.
[0057] Furthermore, in some embodiments of the present application, by opening the pneumatic valve, compressed air can be introduced from the air pipe 161 into the sliding member 180 , thereby driving the sliding member 180 to slide up and down along the track 170 .
[0058] Furthermore, a limit member 171 is provided on the track 170. By providing the limit member 171, the slide member 180 can slide to a preset position ( Figure 2 (a1).
[0059] Furthermore, in some embodiments of the present application, at least two slide grooves are provided on the above-mentioned track 170; the sliding member 180 is installed on the slide groove, and the other end of the sliding member 180 is fixedly connected to the first conveying pipe 130, so that when the sliding member 180 slides up and down on the track 170, it can drive the first conveying pipe 130 to slide up and down.
[0060] Furthermore, in the illustrated embodiment, the sliding member 180 includes a main body and a connecting portion, and the connecting portion includes at least two connecting portions, and the at least two connecting portions are symmetrically arranged and respectively fixedly connected to the first conveying pipe 130 .
[0061] Furthermore, in some embodiments of the present application, the chemical raw material feeding device 100 mentioned above includes: an air blowing valve 190 .
[0062] Furthermore, the above-mentioned blowing valve 190 is installed on the second delivery pipe 120 to add pressure to the second delivery pipe 120 .
[0063] In the above technical solution, by providing an air blow valve 190 and installing the air blow valve 190 on the second delivery pipe 120, pressurizing the second delivery pipe 120, increasing the pressure inside the device can enable the raw materials to be more effectively vertically dropped into the reactor; and can accelerate the falling speed of the raw materials, thereby further improving the problem of the raw materials sticking to the inner wall of the second delivery pipe 120.
[0064] Furthermore, in some embodiments of the present application, the above-mentioned air blowing valve 190 is arranged at a position close to the inlet end of the second conveying pipe 120. Thus, the effect of accelerating the falling speed of the raw materials can be more effectively improved.
[0065] Further, in the illustrated embodiment, the above-mentioned air blowing valve 190 is arranged at a position close to the inlet end of the second delivery pipe 120, and is located above the initial position of the first delivery pipe 130. The above-mentioned initial position of the first delivery pipe 130 refers to the initial position of the first delivery pipe 130 before it slides down along the second delivery pipe 120 into the reactor.
[0066] For example, refer to Figure 1 and Figure 2 In the embodiment shown in the figure of the present application, the first delivery pipe 130 is sleeved and connected to the outer wall of the second delivery pipe 120. At this time, the pneumatic valve is not actuated and the first delivery pipe 130 is in the initial position a0. When the pneumatic valve is actuated, the first delivery pipe 130 is driven to slide downward along the second delivery pipe 120 to the preset position a1. At this time, one end of the first delivery pipe 130 is connected to the outer wall of the second delivery pipe 120, and the free end of the first delivery pipe 130 extends to the inside of the reactor 110. In this state, the first delivery pipe 130 serves as an extension pipe of the second delivery pipe 120, further guiding the material to enter the reactor 110 more accurately.
[0067] Furthermore, in some embodiments of the present application, after the material delivery is completed, the pneumatic valve is reversed to drive the first delivery pipe 130 from the preset position a1 to the initial position a0, so that the first delivery pipe 130 is separated from the reactor 110 without affecting the subsequent chemical reaction.
[0068] Furthermore, in some embodiments of the present application, the chemical raw material feeding device further includes: a storage tank 140. The second conveying pipe 120 has a feed inlet and a discharge port relative to the feed inlet; the storage tank 140 is connected to the feed inlet of the second conveying pipe 120.
[0069] Furthermore, in some embodiments of the present application, the feed end of the storage tank 140 is connected to a raw material delivery device, which can achieve sealing of the storage tank 140. The discharge end of the storage tank 140 is connected to the feed port of the second delivery pipe 120; the feed port of the second delivery pipe 120 is provided with a valve 121; when feeding is required, the valve 121 is opened, and the material can enter the second delivery pipe 120 and the first delivery pipe 130 from the storage tank 140, and finally enter the reactor 110.
[0070] Further, in some embodiments of the present application, the valve 121 is a rotary valve that can open or close the second delivery pipe 120. The feed port of the second delivery pipe 120 can be opened by the valve 121 to achieve communication between the storage tank 140 and the second delivery pipe 120.
[0071] In some embodiments of the present application, when it is necessary to feed materials into the reactor 110, the raw materials are stored in a sealed storage tank 140 in advance. When the first delivery pipe 130 reaches the preset position, the valve 121 is opened, and the materials can pass through the second delivery pipe 120 and the first delivery pipe 130 to reach the reactor 110 in sequence. During the feeding process, the materials are sealed throughout the process and do not come into contact with the air, and the feeding port of the reactor does not need to be opened and closed; thereby, it can effectively prevent foreign matter from entering the reactor (such as suspended particles in the air) after the raw materials come into contact with the air and contaminate the reactor; thereby, the production quality is improved and cross contamination is avoided. It is particularly suitable for polyimide acid polymerization reactions, and can effectively prevent suspended particles in the air from directly entering the reactor and causing cross contamination; greatly improving the quality of the polymerization reaction.
[0072] Some embodiments of the present application provide a chemical raw material feeding device, which includes the chemical raw material feeding device 100 provided in any of the above embodiments; and a raw material conveying device (not shown). Further, the raw material conveying device is connected to the inlet end of the storage tank 140 of the chemical raw material feeding device 100.
[0073] In the above technical solution, by connecting the raw material conveying device to the inlet end of the storage tank 140 of the chemical raw material feeding device 100, the storage tank 140 can be sealed to prevent foreign matter such as suspended particles in the air from contaminating the materials.
[0074] It should be noted that the above-mentioned raw material conveying device can select the common raw material delivery device in the field, such as a raw material delivery transmission production line, etc.; the above-mentioned raw material conveying device can be connected to the storage tank 140 through a pipeline or a flexible channel.
[0075] In the above technical solution, when it is necessary to feed materials into the reactor 110, the storage tank 140 is connected to the raw material conveying device. When the first conveying pipe 130 reaches the preset position, the valve 121 is opened, and the materials can reach the reactor 110 through the second conveying pipe 120 and the first conveying pipe 130 in sequence. During the feeding process, the materials are sealed throughout the process and do not come into contact with the air. The feeding port of the reactor does not need to be opened and closed; thus, it can effectively prevent foreign matter from entering the reactor (such as suspended particles in the air) after the raw materials come into contact with the air and contaminate the reactor; thereby improving the production quality and avoiding cross contamination. It is particularly suitable for polyimide acid polymerization reactions, and can effectively prevent suspended particles in the air from directly entering the reactor and causing cross contamination; greatly improving the quality of the polymerization reaction.
[0076] In some embodiments of the present application, illustratively, taking the polymerization reaction of polyimide acid as an example, the above-mentioned chemical raw material feeding equipment operates as follows:
[0077] When the feeding device is in operation, the raw materials are stored in the sealed storage tank 140 in advance through the raw material conveying device. After the raw materials are prepared, the sliding member 180 and the driving part 160 are connected by the air pipe 161. After the connection is completed, the compressed air is turned on, and the sliding member 180 moves up and down along the track 170 by controlling the air inlet and outlet valves of the driving part 160. After the compressed air is turned on, the sliding member 180 drives the first conveying pipe 130 to move downward until it reaches the preset limit (preset position a1), and the first conveying pipe 130 enters the reactor 110. At this time, the valve 121 is rotated to the open state; the material begins to fall into the reactor 110 by gravity. The air blowing valve 190 is opened, and the air blowing valve 190 begins to pressurize the oblique lower part of the second conveying pipe 120 to accelerate the falling speed of the raw materials. After the raw materials are conveyed, the valve 121 must be rotated to the closed state before the air blowing valve 190. Subsequently, the air inlet and outlet valves of the driving unit 160 are controlled to move the sliding member 180 upward along the track 170, driving the first conveying pipe 130 to move to the top of the reactor 110 (initial position a0), and finally the stirring motor 152 is turned on to start the polyimide acid polymerization reaction.
[0078] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims
1. A chemical raw material feeding device, characterized in that: include: A reaction kettle having a feeding port; as well as A first conveying pipe, slidably connected to the feeding port; The first delivery tube has a first end and a second end opposite to the first end; The first end is located outside the reactor, and the second end can be extended into the reactor by sliding.
2. The chemical raw material feeding device according to claim 1, characterized in that: The chemical raw material feeding device comprises a second conveying pipe, which is installed outside the reactor and connected to the feeding port; The first delivery pipe is arranged outside the second delivery pipe, and the first delivery pipe is slidably connected to the second delivery pipe.
3. The chemical raw material feeding device according to claim 2, characterized in that: The chemical raw material feeding device comprises: a driving part; The driving part is drivingly connected to the first conveying pipe; the driving part is configured to drive the first conveying pipe to slide along the axial direction of the second conveying pipe.
4. The chemical raw material feeding device according to claim 3, characterized in that: The chemical raw material feeding device comprises: a track and a sliding part; The sliding member is transmission-connected to the driving part; the first conveying pipe is transmission-connected to the sliding member; the sliding member is installed on the track; the extension direction of the track is the same as the axial direction of the second conveying pipe.
5. The chemical raw material feeding device according to claim 4, characterized in that: The driving part comprises a pneumatic valve; the sliding member is connected to the pneumatic valve via an air pipe transmission.
6. The chemical raw material feeding device according to claim 2, characterized in that: The chemical raw material feeding device comprises: an air blowing valve; The blowing valve is installed on the second delivery pipe and is used to add pressure to the second delivery pipe.
7. The chemical raw material feeding device according to any one of claims 2 to 6, characterized in that: The chemical raw material feeding device comprises: a storage tank; the second conveying pipe has a feed inlet and a discharge port relative to the feed inlet; The material storage tank is connected to the feed port of the second conveying pipe.
8. The chemical raw material feeding device according to any one of claims 2 to 6, characterized in that: The feed inlet of the second conveying pipe is provided with a valve.
9. The chemical raw material feeding device according to any one of claims 2 to 6, characterized in that: The chemical raw material feeding device comprises a stirring part; The stirring part includes a stirring member, and the stirring member is arranged inside the reaction kettle; The axis of the stirring member is parallel to the axial direction of the second conveying pipe; the stirring member rotates around its axis.
10. A chemical raw material feeding equipment, characterized in that: A chemical raw material feeding device comprising any one of claims 1 to 9; and A raw material conveying device; the raw material conveying device is connected to the inlet end of the storage tank of the chemical raw material feeding device.