A new type of horizontal automatic discharge valve

Abstract

The invention discloses a novel horizontal automatic discharging valve, comprising a three-way valve body, wherein an end cover with a through hole in the center is arranged at one end of a straight passage of the valve body, a connecting sleeve is arranged on the end cover, a driving motor is arranged at the end of the connecting sleeve, an output shaft of the driving motor is drivingly connected with a screw rod extending into the connecting sleeve, a plug is arranged in the valve body, a screw sleeve is connected at the end of the plug, the screw sleeve passes through the end cover and is threadedly connected to the screw rod, a seal is formed between the end cover and the screw sleeve, a slide groove is arranged on the inner wall of the valve body, a slider sliding along the slide groove is arranged on the plug, the other end of the straight passage of the valve body is connected to a crystallization tank via a heating flange as a feed port, and a bypass passage of the valve body is used as a discharge port, and the feed port and the discharge port are conducted and closed by moving the plug in the valve body. The invention avoids the formation of crystals at the feed port of the valve body, thereby improving the discharging efficiency and reducing the labor cost.

Description

Technical Field

[0001] The invention relates to a discharge valve, in particular to an automatic discharge valve. Background Art

[0002] At present, the discharge valves used in the production process of glucose syrup are generally stop valves, ball valves or butterfly valves. Because the concentration of glucose syrup is above 50%, long storage time or low storage temperature can easily cause glucose crystallization, especially at the discharge valve position, where the inlet and outlet of the discharge valve are prone to accumulation of crystals. Especially in seasons with low temperatures, it is more likely to be blocked by crystallization. After the glucose syrup crystallizes, the crystals are hard and difficult to handle. Currently, it can only be cleared by manual external heating and continuous moving valves, which is time-consuming and laborious.

[0003] The prior art discloses an electric heating discharge valve for glucose syrup, the publication number of which is CN 209414674 U and the application date of which is 2018.11.22. The valve comprises a valve body and a heating sleeve. The working principle is to set a heating sleeve on the outside of the valve body and heat the heating sleeve to increase the internal conveying temperature of the valve body to avoid crystallization. However, the disadvantage is that the cost of electric heating is high and there are certain safety hazards. Summary of the invention

[0004] The purpose of the present invention is to provide a novel horizontal automatic discharge valve, which can avoid the formation of crystals at the feed inlet of the valve body, thereby improving the discharge efficiency and reducing labor costs.

[0005] The objective of the present invention is achieved in this way: a novel horizontal automatic discharge valve comprises a three-way valve body, one end of the straight passage of the valve body is provided with an end cover with a through hole in the center, the end cover is provided with a connecting sleeve, the end of the connecting sleeve is provided with a driving motor, the output shaft of the driving motor is drivingly connected with a screw rod extending into the connecting sleeve, a plug is provided in the valve body, a screw sleeve is connected to the end of the plug, the screw sleeve passes through the end cover and is threadedly connected to the screw rod, a seal is formed between the end cover and the screw sleeve, a slide groove is provided on the inner wall of the valve body, a slider sliding along the slide groove is provided on the plug, the other end of the straight passage of the valve body is connected to the crystallization tank via a heating flange as a feed port, the bypass passage of the valve body is used as a discharge port, and the conduction and closing of the feed port and the discharge port are realized by moving the plug in the valve body.

[0006] When the present invention is working, the feed port is connected to the discharge end of the crystallizer, and the screw is rotated by the driving motor, and the slider and the slide groove are cooperated to drive the screw sleeve to move along its axial direction, so as to realize the conduction and closure of the feed port and the discharge port, making the control more convenient. At the same time, a heating flange is arranged at the feed port, and the heating flange can realize self-heating, thereby solving the problem of crystallization at the discharge port. Compared with the prior art, the beneficial effect of the present invention is that the present invention solves the problem of crystallization at the discharge end by arranging a heating flange with self-heating at the discharge end of the crystallizer, making the discharge smoother and more efficient. The present invention can be used in the production of crystalline sugar.

[0007] In order to further ensure the heating performance and reliability of the heating flange, the heating flange includes a flange plate, an inner ring of the flange plate is provided with an annular groove, a sealing baffle for closing the groove is fixed to the inner ring of the flange plate, and an inlet channel and an outlet channel connected to the groove are provided in the flange plate, and the inlet channel, the outlet channel and the groove together form a flow channel for the flow of heating medium.

[0008] In order to make the heating more uniform and further improve the reliability of the present invention, the inlet channel and the outlet channel are symmetrically arranged along the center line of the flange, and the inlet channel and the outlet channel are both L-shaped structures. The inlet channel and the outlet channel have the same structure. The inlet channel includes a through hole opened along the radial direction of the flange, the inner end of the through hole is connected to the groove, and the outer end of the through hole is closed by a plug block; a blind hole connected to the through hole is opened on the surface of the flange along the axial direction of the flange.

[0009] In order to facilitate the installation of the heating flange and the connection of the external heating medium, a plurality of threaded holes are provided on the flange disk along its axial direction, and the blind holes are arranged cocircularly with the threaded holes, and the blind holes are also threaded holes.

[0010] In order to further enhance the sealing performance of the present invention, the inner ring of the end cover extends outward along its axial direction to form a boss, a cover plate is fixed to the end face of the boss, the inner ring of the end cover is provided with a step, a sealing sleeve is provided between the step and the screw sleeve, and the sealing sleeve is crimped onto the step under the action of the cover plate.

[0011] In order to further enhance the sealing performance of the present invention, the connecting sleeve is connected to the end face of the end cover via a flange, the boss is arranged in the connecting sleeve, a concave ring is arranged on the end face of the end cover, the flange end face of the connecting sleeve is processed with a protrusion extending outward and inserted into the concave ring, a first annular groove is opened on the protrusion, and a first O-ring is arranged in the first annular groove.

[0012] In order to further enhance the sealing performance of the present invention, the valve body is fixedly connected to the heating flange via a flange, and a sealing ring is provided between the valve body and the heating flange. An inner step is processed on the end face of the sealing ring close to the valve body at a position corresponding to the end face of the valve body, and a sealing gasket is provided in the inner step.

[0013] In order to further enhance the sealing performance of the present invention, a second annular groove is provided on the end surface of the sealing retaining ring close to the heating flange, and a second O-ring is arranged in the second annular groove.

[0014] In order to further enhance the sealing performance of the plug when it is closed, the plug includes a coaxial first cylindrical portion and a second cylindrical portion, the diameter of the first cylindrical portion is smaller than that of the second cylindrical portion, the first cylindrical portion and the second cylindrical portion are transitioned via an inclined surface, the screw sleeve is fixed at the center position of the end face of the second cylindrical portion, and the slider is fixed at the periphery of the end face of the second cylindrical portion.

[0015] In order to make the plug slide more smoothly, a pair of sliding grooves are provided and a pair of corresponding sliding blocks are also provided. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the present invention.

[0017] Figure 2 for Figure 1 Enlarged view of point A in the middle.

[0018] Figure 3 for Figure 2 Enlarged view of point B in the middle.

[0019] Figure 4 This is an end view of the heating flange in the present invention.

[0020] Figure 5 For along Figure 4 CC section view.

[0021] Among them, 1 flange, 1a groove, 1b through hole, 1c blind hole, 1d threaded hole, 1m inlet channel, 1n outlet channel, 2 sealing baffle, 3 plug, 4 sealing retaining ring, 4a sealing gasket, 4b second annular groove, 5 valve body, 5a flange edge, 6 slide groove, 7 plug, 7a first cylindrical part, 7b inclined surface, 7c second cylindrical part, 8 slider, 9 end cover, 9a boss, 9b sealing sleeve, 9c cover plate, 10 connecting sleeve, 10a flange edge, 10b first annular groove, 11 screw sleeve, 12 screw, 13 driving motor. DETAILED DESCRIPTION

[0022] like Figure 1-5A horizontal new type automatic discharge valve shown in the figure comprises a three-way valve body 5, an end cover 9 with a through hole 1b in the center is provided at one end of the straight passage of the valve body 5, a connecting sleeve 10 is provided on the end cover 9, a driving motor 13 is provided at the end of the connecting sleeve 10, an output shaft of the driving motor 13 is drivingly connected with a screw rod 12 extending into the connecting sleeve 10, the screw rod 12 is threadedly connected with a screw sleeve 11, the end of the screw sleeve 11 passes through the end cover 9 and is fixedly connected with a plug 7, the plug 7 comprises a coaxial first cylindrical portion 7a and a second cylindrical portion 7c, the diameter of the first cylindrical portion 7a is smaller than that of the second cylindrical portion 7c The first cylindrical portion 7a and the second cylindrical portion 7c are transitioned through the inclined surface 7b, the screw sleeve 11 is fixed at the center of the end surface of the second cylindrical portion 7c, a pair of slide grooves 6 are provided on the inner wall of the valve body 5, and a pair of sliders 8 sliding along the slide grooves 6 are provided on the plug 7, and the sliders 8 are fixed to the periphery of the end surface of the second cylindrical portion 7c. The other end of the straight passage of the valve body 5 is connected to the crystallization tank through a heating flange as a feed port, and the bypass passage of the valve body 5 is used as a discharge port. The plug 7 moves in the valve body 5 to realize the conduction and closure of the feed port and the discharge port, and a seal is formed between the end cover 9 and the screw sleeve 11, as follows:

[0023] The inner ring of the end cover 9 extends outward along its axial direction to form a boss 9a, and a cover plate 9c with a central opening is fixed on the end face of the boss 9a. The inner ring of the end cover 9 is provided with a step, and a sealing sleeve 9b made of polytetrafluoroethylene is provided between the step and the screw sleeve 11. The sealing sleeve 9b is pressed on the step under the action of the cover plate 9c to prevent its axial movement. The connecting sleeve 10 is fixedly connected to the end face of the end cover 9 by a flange edge 10a welded on its outer periphery and bolted. The boss 9a is arranged in the connecting sleeve 10, and a concave ring is arranged on the end face of the end cover 9. The flange end face of the connecting sleeve 10 is processed with a protrusion extending outward and inserted into the concave ring, and a first annular groove 10b is opened on the protrusion, and a first O-ring (not shown in the figure) is arranged in the first annular groove 10b;

[0024] The valve body 5 is fixedly connected to the heating flange by welding the flange edge 5a on its outer periphery, and a sealing ring 4 is arranged between the valve body 5 and the heating flange. An inner step is processed on the end face of the sealing ring 4 close to the valve body 5 at a position corresponding to the end face of the valve body 5, and a sealing gasket 4a is arranged in the inner step. A second annular groove 4b is opened on the end face of the sealing ring 4 close to the heating flange, and a second O-ring (not shown in the figure) is arranged in the second annular groove 4b.

[0025] The heating flange includes a flange 1, an annular groove 1a is formed in the inner ring of the flange 1, a sealing baffle 2 for closing the groove 1a is fixed to the inner ring of the flange 1, an inlet channel 1m and an outlet channel 1n connected to the groove 1a are formed in the flange 1, the inlet channel 1m, the outlet channel 1n and the groove 1a together form a flow channel for the flow of a heating medium, and the heating medium in this embodiment can be selected from high-temperature hot water or high-temperature steam, and the inlet channel 1m and the outlet channel 1n are symmetrically arranged along the center line of the flange 1, and the inlet channel 1m and the outlet channel 1n are symmetrically arranged along the center line of the flange 1. The inlet channel 1m and the outlet channel 1n are both L-shaped structures. The inlet channel 1m and the outlet channel 1n have the same structure. The inlet channel 1m includes a through hole 1b radially opened along the flange 1, the inner end of the through hole 1b is connected to the groove 1a, and the outer end of the through hole 1b is closed by a plug block 3; a blind hole 1c connected to the through hole 1b is opened on the surface of the flange 1 along the axial direction of the flange 1, and a plurality of threaded holes 1d are also opened on the surface of the flange 1 along the axial direction thereof, the blind hole 1c and the threaded hole 1d are cocircularly arranged, and the blind hole 1c is also a threaded hole 1d.

[0026] When the present invention is working, the feed port is connected to the discharge end of the crystallization tank, the screw 12 is rotated by the driving motor 13, and the slider 8 and the slide groove 6 drive the screw sleeve 11 to move along its axial direction, so as to realize the conduction and closure of the feed port and the discharge port, making the control more convenient. At the same time, a heating flange is arranged at the feed port, and the heating flange is heated by the heating medium, thereby solving the problem of crystallization at the discharge port.

[0027] The present invention is not limited to the above-mentioned embodiments. On the basis of the technical solution disclosed in the present invention, technicians in this field can make some substitutions and deformations to some technical features therein according to the disclosed technical content without creative labor, and these substitutions and deformations are all within the protection scope of the present invention.

Claims

1. A horizontal automatic discharge valve, characterized in that: It comprises a three-way valve body, one end of the straight passage of the valve body is provided with an end cover with a through hole in the center, the end cover is provided with a connecting sleeve, the end of the connecting sleeve is provided with a driving motor, the output shaft of the driving motor is drivingly connected with a screw rod extending into the connecting sleeve, a plug is provided in the valve body, a screw sleeve is connected to the end of the plug, the screw sleeve passes through the end cover and is threadedly connected to the screw rod, a seal is formed between the end cover and the screw sleeve, a slide groove is provided on the inner wall of the valve body, a slider sliding along the slide groove is provided on the plug, the other end of the straight passage of the valve body is connected to the crystallization tank via a heating flange as a feed port, the bypass passage of the valve body is used as a discharge port, and the feed port and the discharge port are connected and closed by moving the plug in the valve body; The heating flange comprises a flange plate, an annular groove is formed in the inner ring of the flange plate, a sealing baffle for closing the groove is fixed to the inner ring of the flange plate, an inlet channel and an outlet channel connected to the groove are formed in the flange plate, and the inlet channel, the outlet channel and the groove together form a flow channel for the heating medium to flow; The inlet channel and the outlet channel are symmetrically arranged along the center line of the flange, and both of them are L-shaped structures. The inlet channel and the outlet channel have the same structure. The inlet channel includes a through hole opened along the radial direction of the flange, the inner end of the through hole is connected to the groove, and the outer end of the through hole is closed by a plug block; a blind hole connected to the through hole is opened on the surface of the flange along the axial direction of the flange; The inner ring of the end cover extends outwardly along its axial direction to form a boss, a cover plate is fixed to the end surface of the boss, a step is provided on the inner ring of the end cover, a sealing sleeve is provided between the step and the screw sleeve, and the sealing sleeve is pressed on the step under the action of the cover plate; The slide grooves are provided in a pair, and the corresponding slide blocks are also provided in a pair.

2. A horizontal automatic discharge valve according to claim 1, characterized in that: The flange surface is provided with a plurality of threaded holes along its axial direction, the blind holes are arranged cocircularly with the threaded holes, and the blind holes are also threaded holes.

3. A horizontal automatic discharge valve according to claim 1 or 2, characterized in that: The connecting sleeve is connected to the end face of the end cover via a flange, the boss is arranged in the connecting sleeve, a concave ring is arranged on the end face of the end cover, the flange end face of the connecting sleeve is processed with a protrusion extending outward and inserted into the concave ring, a first annular groove is opened on the protrusion, and a first O-ring is arranged in the first annular groove.

4. A horizontal automatic discharge valve according to claim 1 or 2, characterized in that: The valve body is fixedly connected to the heating flange via a flange, a sealing ring is arranged between the valve body and the heating flange, an inner step is processed on the end face of the sealing ring close to the valve body at a position corresponding to the end face of the valve body, and a sealing gasket is arranged in the inner step.

5. A horizontal automatic discharge valve according to claim 4, characterized in that: A second annular groove is formed on the end surface of the sealing retaining ring close to the heating flange, and a second O-ring is arranged in the second annular groove.

6. A horizontal automatic discharge valve according to claim 1 or 2, characterized in that: The plug includes a coaxial first cylindrical portion and a second cylindrical portion, the diameter of the first cylindrical portion is smaller than that of the second cylindrical portion, the first cylindrical portion and the second cylindrical portion are transitioned via an inclined surface, the threaded sleeve is fixed at the center position of the end face of the second cylindrical portion, and the slider is fixed at the periphery of the end face of the second cylindrical portion.

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