Automatic feeding device of primary tower

Abstract

The utility model relates to the technical field of furfural production, in particular to an automatic feeding device of a primary distillation tower, which comprises the primary distillation tower, two feeding pipes, two three-dimensional five-way joints and four feeding branch pipes, the feeding pipes are welded on a tower body of the primary distillation tower, the four feeding branch pipes are fixedly mounted between the two feeding pipes through the two three-dimensional five-way joints, and the automatic feeding device of the primary distillation tower further comprises a control valve assembly. The control valve assembly comprises a valve body, a connecting component, a rubber bushing, a closed baffle and a closed rotating component, the valve body is connected with the three-dimensional five-way joint through the connecting component and located at the end, away from the feeding branch pipe, of the three-dimensional five-way joint, the connecting component is fixedly installed on the valve body, and the rubber bushing is fixedly connected with the valve body and located in the valve body. The closing baffle is connected with the valve body through the closing rotating component and located in the rubber bushing, and the effects that the automatic feeding rate of the furfural raw materials is controlled, and the situation that the furfural production quality and efficiency are affected due to the too high or too low feeding rate is avoided are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of furfural production, in particular to an automatic feeding device for a primary distillation tower. Background Art

[0002] Furfural, identical to furfural, is systematically designated α-furfural. It is a derivative in which the hydrogen atom at the 2-position of furan is replaced by an aldehyde group. It appears as a colorless, transparent, oily liquid with a distinctive odor similar to benzaldehyde. Upon exposure to light and air, it quickly turns reddish-brown and readily evaporates with steam. During the furfural production process, the raw furfural solution is typically pumped automatically into the primary distillation tower. This can damage internal components, shortening their service life.

[0003] The prior art CN214261802U discloses an automatic feeding device for a primary distillation tower for furfural production. By using the three-dimensional five-way a, the three-dimensional five-way b, the feed branch pipe a, the feed branch pipe b, the feed branch pipe c, and the feed branch pipe d in combination, the furfural stock solution in the feed pipe can be effectively diverted, and by using the spring chamber, the spring, the connecting hole, the connecting rod, the connecting plate a, the connecting plate b, and the rubber plug in combination, the furfural stock solution inside the feed pipe can be effectively buffered when entering the three-dimensional five-way a, so that the furfural stock solution is buffered twice before entering the primary distillation tower, so that the utility model has a better buffering effect on the furfural stock solution, and by using the folding tube provided in the utility model in combination, the furfural stock solution can be effectively prevented from entering the spring chamber and damaging the spring, thereby effectively reducing the impact force of the furfural stock solution when entering the primary distillation tower through the feed pipe, protecting the internal parts of the primary distillation tower, and the feed pipes are all located outside the primary distillation tower, which is convenient for maintenance and replacement.

[0004] In the furfural production process, when the feed rate of the furfural raw liquid is too fast, the liquid in the primary distillation tower may not be fully distributed and in contact, resulting in insufficient separation of the materials, which may cause reflux and further affect the distillation effect; when the feed rate is too slow, although it can ensure that the materials have sufficient residence time in the primary distillation tower for separation, it will extend the time of the entire production process and reduce production efficiency; the above-mentioned technology can buffer the feeding of furfural raw materials, and requires hydraulic pressure to squeeze the rubber plug to divert the feed, which leads to a fast feed rate and affects the production quality. Utility Model Content

[0005] The purpose of the utility model is to provide an automatic feeding device for a primary distillation tower, which solves the problem that the prior art uses a rapid feeding and squeezing rubber plug for diversion and buffering feeding, but the excessively fast feeding rate affects production quality.

[0006] In order to achieve the above object, the utility model provides a kind of automatic feeding device of primary distillation column, including primary distillation column, two feed pipes, two three-dimensional five ways and four feed branch pipes, the feed pipe is welded in the primary distillation column body, four feed branch pipes are fixedly installed between two feed pipes by two three-dimensional five ways,

[0007] It further includes a control valve assembly.

[0008] The control valve assembly includes a valve body, a connecting member, a rubber bushing, a closure baffle and a closure rotating member. The valve body is connected to the three-dimensional five-way through the connecting member and located at one end of the three-dimensional five-way away from the feed branch pipe. The connecting member is fixedly installed on the valve body. The rubber bushing is fixedly connected to the valve body and located inside the valve body. The closure baffle is connected to the valve body through the closure rotating member and located inside the rubber bushing.

[0009] The closure rotating member includes a valve stem and two sealing bearings. The valve stem is rotationally connected to the valve body through the two sealing bearings and penetrates through the closure baffle and is fixedly connected to the closure baffle. One side of the two sealing bearings is fixedly connected to the valve stem, and the other end of the two sealing bearings is fixedly connected to the valve body. The two sealing bearings are located at the upper end of the valve body.

[0010] The valve body has a mounting hole and a limiting groove. The mounting hole is arranged at the upper end of the valve body and cooperates with the sealing bearing. The limiting groove is arranged at the lower end of the valve body and cooperates with the valve stem.

[0011] The connecting member includes two connecting plates and a connecting head. The two connecting plates are welded on one side of the valve body close to the three-dimensional five-way and are respectively located at the upper and lower sides of the valve body. The connecting head is located at one end of the valve body away from the connecting plates and is threadedly connected to the feed pipe.

[0012] The connecting plate has a connecting hole that penetrates through the connecting plate and is located at both ends of the connecting plate. The connecting head has a connecting thread that is arranged on the inner side wall of the connecting head and cooperates with the connecting end thread of the feed pipe.

[0013] The utility model discloses a kind of automatic feeding devices of primary distillation column, the valve body is installed between the stereoscopic five-way and the feed pipe by the connecting member, when pump is input into the primary distillation column by the feed pipe by furfural stock solution, it can be driven by the closure rotating member and the closure baffle rotates, adjust the flow-through degree of the valve body, and then the feeding input rate of furfural stock solution can be controlled, and then the rate of automatic feeding of furfural raw material can be realized by the control valve assembly, avoid feeding rate too fast or too slow to influence the quality and efficiency of furfural production. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the drawings needed to be used in the embodiment or prior art description will be briefly introduced as follows.

[0015] Figure 1 It is the front view of the automatic feeding device of primary distillation column of the utility model.

[0016] Figure 2 It is the structural schematic view of the automatic feeding device of primary distillation column of the utility model.

[0017] Figure 3 It is the internal structure schematic view of control valve assembly of the utility model.

[0018] Figure 4 It is the structural schematic view of control valve assembly of the utility model.

[0019] In the drawing: 101-primary distillation column, 102-feed pipe, 103-stereoscopic five-way, 104-feed branch pipe, 105-valve body, 106-rubber bushing, 107-closure baffle, 108-valve stem, 109-sealing bearing, 110-mounting hole, 111-limiting recess, 112-connection plate, 113-connection head, 114-connection hole, 115-connection thread. DETAILED DESCRIPTION

[0020] The embodiments of the utility model will be described in detail below, the examples of the embodiments are shown in the drawings, the embodiments described below by referring to the drawings are exemplary, and are intended to explain the utility model, and cannot be understood as the limitation of the utility model.

[0021] Please refer to Figures 1 to 4 , wherein Figure 1 It is the front view of the automatic feeding device of primary distillation column of the utility model, Figure 2 It is the structural schematic view of the automatic feeding device of primary distillation column of the utility model, Figure 3 It is the internal structure schematic view of control valve assembly of the utility model, Figure 4 It is the structural schematic view of control valve assembly of the utility model.

[0022] The utility model discloses a kind of automatic feeding devices of primary distillation column: including primary distillation column 101, two feed pipes 102, two three-dimensional five ways 103, four feed branch pipes 104 and control valve assembly, the control valve assembly includes valve body 105, connecting member, rubber bushing 106, closure baffle 107 and closure rotating member, the closure rotating member includes valve stem 108 and two sealing bearings 109, the valve body 105 has mounting hole 110 and limiting recess 111, the connecting member includes two connecting plates 112 and connecting head 113, the connecting plate 112 has connecting hole 114, the connecting head 113 has connecting thread 115.It is understood that the foregoing scheme can control the rate of automatic feeding of furfural raw materials by the control valve assembly, avoid the quality and efficiency of furfural production being affected by too fast or too slow feeding rate.

[0023] In the embodiment, the feed pipe 102 is welded to the primary distillation column 101, and the four feed branch pipes 104 are fixedly installed between the two feed pipes 102 through the two three-dimensional five ways 103. The feed pipe 102 is fixedly connected to the feed inlet of the primary distillation column 101, the three-dimensional five way 103 is fixedly connected to the feed pipe 102, the other four through holes of the three-dimensional five way 103 are fixedly connected to the feed branch pipes 104, the other ends of the four feed branch pipes 104 are fixedly communicated with the four through holes of the other three-dimensional five way 103, the remaining through holes of the other three-dimensional five way 103 are connected to the control valve assembly, the other feed pipe 102 is connected to the control valve assembly, the rate of furfural raw materials input into the primary distillation column 101 through the feed device is controlled by the control valve assembly, the input raw materials are shunted by the two three-dimensional five ways 103 and the four feed branch pipes 104, the buffering effect is achieved, the impact force of furfural raw solution entering the primary distillation column 101 through the feed pipe 102 is effectively reduced, and the internal parts of the primary distillation column 101 are protected.

[0024] The valve body 105 is connected with the three-dimensional five-way valve 103 through the connecting member, and is located at one end of the three-dimensional five-way valve 103 away from the feed branch pipe 104. The connecting member is fixedly installed on the valve body 105. The rubber bushing 106 is fixedly connected with the valve body 105 and is located in the valve body 105. The closing baffle 107 is connected with the valve body 105 through the closing rotating member and is located in the rubber bushing 106. The cross section of the valve body 105 is inverted T-shaped structure. A circular closing baffle 107 is arranged at the middle position of the circular through hole at the lower end of the valve body 105. The closing baffle 107 is rotationally connected through the closing rotating member. The closing baffle 107 is driven to rotate through the closing rotating member. The closing of the closing baffle 107 to the valve body 105 is adjusted to control the input rate of the furfural raw solution of the control valve assembly. A circular tubular rubber bushing 106 is arranged in the through hole at the lower end of the valve body 105. The outer diameter of the rubber bushing 106 matches the inner diameter of the valve body 105. The inner diameter of the rubber bushing 106 matches the diameter of the closing baffle 107. The rubber bushing 106 is usually composed of a metal framework and a rubber body after vulcanization, has excellent corrosion resistance and wear resistance, and a through hole passing through the middle position of the rubber bushing 106 in the vertical direction matches the valve rod 108 of the closing rotating member, so that the closing rotating member is connected with the closing baffle 107. The valve body 105 is close to one end of the three-dimensional five-way valve 103 and is detachably connected through the connecting member, so that the valve body 105 is convenient to overhaul or replace. Therefore, the valve body 105 is installed between the three-dimensional five-way valve 103 and the feed pipe 102 through the connecting member. When the furfural raw solution is input into the primary distillation tower 101 through the feed pipe 102 by the pump, the closing baffle 107 is driven to rotate through the closing rotating member, the flow passing degree of the valve body 105 is adjusted, the input rate of the furfural raw solution is controlled, the rate of the automatic feeding of the furfural raw material is controlled through the control valve assembly, and the quality and efficiency of the furfural production are avoided to be affected by too fast or too slow feeding rate.

[0025] Secondly, the valve rod 108 is rotatably connected with the valve body 105 through two sealing bearings 109, penetrates the closing baffle 107, and is fixedly connected with the closing baffle 107; one side of each of the two sealing bearings 109 is fixedly connected with the valve rod 108, and the other end of each of the two sealing bearings 109 is fixedly connected with the valve body 105, and the two sealing bearings 109 are located at the upper end of the valve body 105. The mounting hole 110 is arranged at the upper end of the valve body 105 and cooperates with the sealing bearings 109; the limiting groove 111 is arranged at the lower end of the valve body 105 and cooperates with the valve rod 108. The vertical upper end of the valve body 105 is provided with a penetrating mounting hole 110, which is in tubular communication with the lower end of the valve body 105, so that the valve rod 108 extends into the valve body 105 from the upper end of the mounting hole 110, and the lower end of the valve body 105 is provided with the limiting groove 111 at the bottom, which provides conditions for positioning and installing the rotation of the valve rod 108, the mounting hole 110 of the valve body 105 is provided with the sealing bearings 109 at both ends, and the inner sides of the two sealing bearings 109 are fixedly connected with the valve rod 108, so that the valve rod 108 is rotatably installed in the valve body 105 through the two sealing bearings 109, and the mounting hole 110 at the upper end of the valve body 105 is sealed to avoid liquid leakage, and the valve rod 108 is fixedly connected with the closing baffle 107, the valve rod 108 can be manually rotated through a handle, the degree of closing of the closing baffle 107 to the transverse through hole of the valve body 105 is adjusted through the rotation of the valve rod 108, and then the feed rate of the valve body 105 is adjusted through the closing rotating member.

[0026] Meanwhile, two connection plates 112 are welded on one side of the valve body 105 close to the three-dimensional five-way pipe 103, and are respectively located on the upper and lower sides of the valve body 105; the connecting head 113 is located at one end of the valve body 105 away from the connection plate 112, and is threadedly connected with the feed pipe 102. The connecting hole 114 penetrates through the connection plate 112 and is located at both ends of the connection plate 112; the connecting thread 115 is arranged on the inner side wall of the connecting head 113 and is threadedly matched with the connecting end of the feed pipe 102. Two connection plates 112 are welded with the outer side wall of the valve body 105, one end of two connection plates 112 connected with the valve body 105 is arc-shaped and matched with the arc-shaped outer side wall of the valve body 105, and two connection plates 112 are symmetrically installed on the upper and lower ends of the valve body 105. Two connection plates 112 close to the diagonal positions are provided with the connecting hole 114, the valve body 105 is installed at the connecting port end of the three-dimensional five-way pipe 103 through the fastening bolt penetrating through the connecting hole 114, one end of the valve body 105 close to the connection of the feed pipe 102 is provided with the connecting head 113, the connecting head 113 is a circular pipe, the arc-shaped inner side of the connecting head 113 is provided with the connecting thread 115, the feed pipe 102 is threadedly connected with the connecting thread 115, the fixed connection between the feed pipe 102 and the valve body 105 is facilitated, and maintenance, disassembly or replacement are facilitated, and then the valve body 105 is fixedly installed between the feed pipe 102 and the three-dimensional five-way pipe 103 through two connection plates 112 and the connecting head 113 of the connecting member.

[0027] When the valve body 105 is installed between the three-dimensional five-way pipe 103 and the feed pipe 102 through the connecting member, the closed baffle 107 is driven to rotate through the closed rotating member when the furfural raw solution is input into the primary distillation tower 101 through the feed pipe 102 by a pump, the flow-through degree of the valve body 105 is adjusted, the input rate of the furfural raw solution can be controlled, the rate of automatic feeding of the furfural raw material can be controlled through the control valve assembly, and the quality and efficiency of furfural production are affected by too fast or too slow feeding rate.

[0028] The above disclosure is only one or more preferred embodiments of the present application, and cannot limit the scope of the rights of the present application. Those skilled in the art can understand that all or part of the above-mentioned embodiments can be implemented, and equivalent changes made according to the claims of the present application still belong to the scope covered by the present application.

Claims

1. An automatic feeding device for a prefractionation tower, comprising a prefractionation tower, two feeding pipes, two three-dimensional five-ways and four feeding branch pipes, characterized in that the feeding pipes are welded on the prefractionation tower body, and the four feeding branch pipes are fixedly installed between the two feeding pipes through the two three-dimensional five-ways.

2. The automatic feeding device for a prefractionation tower according to claim 1, characterized in that the closing rotating member comprises a valve rod and two sealing bearings, the valve rod is rotatably connected with the valve body through the two sealing bearings and penetrates through and is fixedly connected with the closing baffle, one side of the two sealing bearings is fixedly connected with the valve rod, the other end of the two sealing bearings is fixedly connected with the valve body, and the two sealing bearings are located at the upper end of the valve body.

3. The automatic feeding device for a prefractionation tower according to claim 2, characterized in that the valve body is provided with a mounting hole and a limiting groove, the mounting hole is arranged at the upper end of the valve body and cooperates with the sealing bearings, and the limiting groove is arranged at the lower end of the valve body and cooperates with the valve rod.

4. The automatic feeding device for a prefractionation tower according to claim 1, characterized in that the connecting member comprises two connecting plates and a connecting head, the two connecting plates are welded on the side of the valve body close to the three-dimensional five-ways and are respectively located at the upper and lower sides of the valve body, and the connecting head is located at the end of the valve body away from the connecting plates and is threadedly connected with the feeding pipes.

5. The automatic feeding device for a prefractionation tower according to claim 4, characterized in that the connecting plate is provided with a connecting hole, the connecting hole penetrates through the connecting plate and is located at the two ends of the connecting plate, and the connecting head is provided with a connecting thread, the connecting thread is arranged on the inner side wall of the connecting head and cooperates with the connecting end thread of the feeding pipes. ​ ​ ​ ​ ​ ​

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