A crystal-proof multi-unit rotary switching valve

Abstract

The utility model discloses an anti-crystallization type multi-unit rotary switching valve, which belongs to the technical field of rotary switching valves, and includes a multi-unit rotary switching valve body, wherein the multi-unit rotary switching valve body includes a rotary valve sleeve and a rotary valve stem arranged in the rotary valve sleeve, wherein one side of the rotary valve sleeve close to the front end of the rotary valve stem is end face one, and the other side of the rotary valve sleeve is end face two, and an anti-crystallization lubricating water inlet one and an anti-crystallization lubricating water outlet one are processed on the outer wall surface of the rotary valve sleeve close to end face one. The utility model adds a channel for introducing and discharging anti-crystallization lubricating water at each end of the multi-unit rotary valve body, and introduces anti-crystallization lubricating water during operation, which can dissolve the solutes remaining after the liquid that has leaked to the two end faces of the valve evaporates, and discharges them, thereby effectively solving the problem that the multi-unit rotary valve is stuck due to the solute residue when filling high-concentration solutes, high-viscosity and poorly fluid liquids or paste products, resulting in the inability to operate normally.

Description

Technical Field

[0001] The utility model relates to the technical field of rotary switching valves, and belongs to an anti-crystallization type multi-unit rotary switching valve. Background Art

[0002] The multi-unit rotary valve consists of two parts, namely the rotary valve sleeve and the rotary valve stem. The rotary valve sleeve has a hollow cylindrical inner cavity with extremely high cylindricity and a very smooth surface close to a mirror surface. There are N groups of fluid channels on it. Each group of fluid channels is located on the same circular cross-section and has three channel holes evenly distributed (usually at a 90-degree angle), which are the liquid inlet, liquid outlet, and plunger connection port. The rotary valve stem is a long round rod with extremely high cylindricity and a very smooth surface close to a mirror surface. It is precisely matched with the inner cavity of the rotary valve sleeve, and the gap is in the micron level. The channel hole on the rotary valve stem is equidistant from the rotary valve sleeve. The liquid channel is switched by rotating the rotary valve stem to realize the filling metering function. For example, the prior art publication number is CN119333610A, which is a multi-waterway rotary control valve for controlling the water output of a pump.

[0003] The existing multi-unit rotary valve is a rotating friction part. The gap between the inner cavity of the rotary valve sleeve and the outer surface of the rotary valve stem is very important. If the gap between the two is too small, the running resistance is too large, and it is easy to heat up and lock; if the gap is too large, the running resistance is small, but the pressure resistance is reduced. When the filling volume is large and the filling frequency is high, a large amount of leakage will occur.

[0004] When filling large-volume products or filling frequently, a small amount of liquid to be filled will seep out to both ends of the rotary valve. Especially in clean areas, due to the relatively fast wind speed, the weathering of the liquid is accelerated, and the solute will accumulate at both ends of the rotary valve after the water evaporates, resulting in increased running resistance, heating of the rotary valve, faster evaporation of water, and more solute accumulation at both ends of the rotary valve. Therefore, when using the multi-unit rotary valve with the above structure to fill high-concentration solutes (high-concentration salt, high-concentration sugar), and liquids or paste products with high viscosity and poor fluidity, the risk of the multi-unit rotary valve getting stuck increases. Utility Model Content

[0005] To this end, the utility model provides an anti-crystallization multi-unit rotary switching valve to solve the problem in the prior art that the multi-unit rotary switching valve generates heat, causing water to evaporate faster and more solutes to accumulate at both ends of the multi-unit rotary switching valve, causing the multi-unit rotary switching valve to get stuck.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A crystallization-proof multi-unit rotary switching valve comprises a multi-unit rotary switching valve body, the multi-unit rotary switching valve body comprises a rotary valve sleeve and a rotary valve stem arranged in the rotary valve sleeve, the side of the rotary valve sleeve close to the front end of the rotary valve stem is end face one, and the other side of the rotary valve sleeve is end face two, the outer wall surface of the rotary valve sleeve is processed with an anti-crystallization lubricating water inlet one and an anti-crystallization lubricating water outlet one close to end face one, the outer wall of the rotary valve stem is processed with an annular shallow groove one connected to the anti-crystallization lubricating water inlet one and the anti-crystallization lubricating water outlet one, the end face two is detachably connected with a sealing plate, an anti-crystallization lubricating water channel is formed between the sealing plate and the end face two, and the sealing plate is processed with an anti-crystallization lubricating water inlet two and an anti-crystallization lubricating water outlet two connected to the anti-crystallization lubricating water channel.

[0008] Furthermore, the second anti-crystallization lubricating water inlet is arranged above the second anti-crystallization lubricating water outlet to facilitate the anti-crystallization lubricating water to flow out without residue.

[0009] Furthermore, an O-type sealing ring is provided between the sealing plate and the second end surface, and the O-type sealing ring is used to prevent the anti-crystallization water or solvent from leaking out.

[0010] Furthermore, the rotary valve stem comprises a drive connection component, a drive connection end and a valve stem tail end, wherein the drive connection component is fixed to the front end of the drive connection end and is arranged outside the rotary valve sleeve for connecting a drive device to drive the rotary valve stem to rotate.

[0011] Furthermore, the rotary valve sleeve is provided with multiple groups of fluid channels, each group of fluid channels includes channel hole one, channel hole two and channel hole three, and the channel hole one, channel hole two and channel hole three are located on the same cylindrical section and are used for the flow of fluid in the multi-unit rotary switching valve body.

[0012] Furthermore, the inner wall of the rotary valve sleeve is processed with an annular shallow groove 2, which is connected to the annular shallow groove 1, the anti-crystallization lubricating water inlet 1 and the anti-crystallization lubricating water outlet 1. The annular shallow groove 2 can cooperate with the annular shallow groove 1 to provide anti-crystallization lubricating water for flow and flushing.

[0013] Furthermore, a plurality of anti-crystallization plugs are detachably connected to the bottom end of the rotary valve sleeve, and the plurality of anti-crystallization plugs are evenly spaced to prevent two adjacent anti-crystallization plugs from affecting each other's use and to improve the aesthetics of the entire device.

[0014] Furthermore, the anti-crystallization plunger includes a plunger pump sleeve and a plunger pump rod arranged in the plunger pump sleeve, a plunger pump anti-crystallization lubricating water inlet is processed on one side of the plunger pump sleeve, and a plunger pump anti-crystallization lubricating water outlet is processed on the other side of the plunger pump sleeve, and the plunger pump anti-crystallization lubricating water inlet and the plunger pump anti-crystallization lubricating water outlet are both connected to the interior of the plunger pump sleeve.

[0015] The utility model has the following advantages:

[0016] The utility model adds a channel for introducing and discharging anti-crystallization lubricating water at each end of the multi-unit rotary valve body. When the anti-crystallization lubricating water is introduced during operation, the solute remaining after the liquid that has leaked to the two end surfaces of the valve evaporates can be dissolved and discharged. This can effectively solve the problem that when filling high-concentration solutes, high-viscosity and poorly fluid liquids or paste products, the multi-unit rotary valve is stuck due to solute residues, resulting in the inability to operate normally. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the implementation or the prior art description. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0018] The structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with the technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantial technical significance. Any structural modification, change in proportion or adjustment of size shall still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0019] Figure 1 The overall structural diagram provided by the utility model;

[0020] Figure 2 A sectional view of the overall structure provided by the utility model;

[0021] Figure 3 A cross-sectional view of a rotary valve provided by the utility model;

[0022] Figure 4 A cross-sectional view of a rotary valve and a plunger provided by the utility model;

[0023] Figure 5 This is a schematic diagram of the rotary valve stem structure provided by the utility model.

[0024] In the figure: 1, multi-unit rotary switching valve body; 2, rotary valve sleeve; 2-1, end face one; 2-2, end face two; 2-3, anti-crystallization lubricating water inlet one; 2-4, anti-crystallization lubricating water outlet one; 2-5, annular shallow groove one; 2-6, sealing plate; 2-7, anti-crystallization lubricating water channel; 2-8, anti-crystallization lubricating water inlet two; 2-9, anti-crystallization lubricating water outlet two; 2-10, O-ring; 2-11, channel hole one; 2-12, channel hole two; 2-13, channel hole three; 2-14, annular shallow groove two;

[0025] 3. Rotating valve stem; 3-1. Driving connection component; 3-2. Driving connection end; 3-3. Valve stem tail end;

[0026] 4. Anti-crystallization plunger; 4-1. Plunger pump sleeve; 4-2. Plunger pump rod; 4-3. Anti-crystallization lubricating water inlet of plunger pump; 4-4. Anti-crystallization lubricating water outlet of plunger pump. DETAILED DESCRIPTION

[0027] The following is a specific embodiment of the present invention. People familiar with the technology can easily understand the other advantages and functions of the present invention from the contents disclosed in this specification. Obviously, the described embodiment is a part of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] Example 1

[0029] Refer to the instruction manual Figure 1-Figure 5 The utility model provides an anti-crystallization type multi-unit rotary switching valve, including a multi-unit rotary switching valve body 1, the multi-unit rotary switching valve body 1 includes a rotary valve sleeve 2 and a rotary valve stem 3 arranged in the rotary valve sleeve 2, specifically, the rotary valve stem 3 includes a drive connection component 3-1, a drive connection end 3-2 and a valve stem tail end 3-3, the drive connection component 3-1 is fixed at the front end of the drive connection end 3-2 and is arranged on the outside of the rotary valve sleeve 2, and the drive connection component 3-1 is used to connect the drive device, so as to drive the rotary valve stem 3 to rotate.

[0030] The side of the rotary valve sleeve 2 close to the front end of the rotary valve stem 3 is an end face 2-1, and the other side of the rotary valve sleeve 2 is an end face 2-2. The outer wall surface of the rotary valve sleeve 2 is processed with an anti-crystallization lubricating water inlet 2-3 and an anti-crystallization lubricating water outlet 2-4 close to the end face 2-1, and the outer wall of the rotary valve stem 3 is processed with an annular shallow groove 2-5 connected with the anti-crystallization lubricating water inlet 2-3 and the anti-crystallization lubricating water outlet 2-4.

[0031] In addition, a cylindrical inner cavity is provided inside the rotary valve sleeve 2, and a plurality of groups of fluid channels connected to the cylindrical inner cavity are provided on the rotary valve sleeve 2, each group of fluid channels includes channel hole one 2-11, channel hole two 2-12 and channel hole three 2-13, and channel hole one 2-11, channel hole two 2-12 and channel hole three 2-13 are located on the same cylindrical cross section to realize the flow of fluid.

[0032] Next, a removable sealing plate 2-6 is arranged on the second end face 2-2, and an anti-crystallization lubricating water channel 2-7 is formed between the sealing plate 2-6 and the second end face 2-2. An anti-crystallization lubricating water inlet 2-8 and an anti-crystallization lubricating water outlet 2-9 connected to the anti-crystallization lubricating water channel 2-7 are processed on the sealing plate 2-6, and the anti-crystallization lubricating water inlet 2-8 is arranged above the anti-crystallization lubricating water outlet 2-9 to facilitate the anti-crystallization lubricating water to flow out without residue.

[0033] In order to improve the sealing performance between the sealing plate 2-6 and the second end face 2-2, an O-ring 2-10 is provided between the sealing plate 2-6 and the second end face 2-2 to prevent leakage of anti-crystallization water or solvent.

[0034] In actual use, anti-crystallization lubricating water (the same solvent as the filling liquid of the multi-unit rotary switching valve body 1 and does not contain solute) flows through the anti-crystallization lubricating water inlet 2-3 on the rotary valve sleeve 2 to the inside of the annular shallow groove 2-5, and then is discharged from the anti-crystallization lubricating water outlet 2-4. In this process, the anti-crystallization lubricating water flushes away the crystallized medicinal liquid solutes between the rotary valve stem 3 and the rotary valve sleeve 2, and anti-crystallization lubricating water is also sent into the anti-crystallization lubricating water inlet 2-8 on the sealing plate 2-6. The anti-crystallization lubricating water is discharged through the anti-crystallization lubricating water channel 2-7 between the sealing plate 2-6 and the end face 2-2 and the anti-crystallization lubricating water outlet 2-9 on the sealing plate 2-6, and in this process, the crystallized medicinal liquid solutes are flushed away.

[0035] In this embodiment, anti-crystallization lubricating water is sent into the multi-body rotary switching valve body 1 for flushing, which can effectively solve the problem of the multi-body rotary switching valve body 1 being stuck and unable to operate normally when filling high-concentration solutes, high-concentration salts, high-concentration sugars, and liquids or paste products with high viscosity and poor fluidity. The multi-body rotary switching valve body 1 can be used in combination with an anti-crystallization plunger 4, such as a new type of anti-crystallization plunger with publication number CN220337061U. The anti-crystallization plunger 4 is installed at equal intervals at the bottom end of the multi-body rotary switching valve body 1. The anti-crystallization plunger 4 includes a plunger pump sleeve 4-1 and a plunger pump rod 4-2 arranged in the plunger pump sleeve 4-1. A plunger pump anti-crystallization lubricating water inlet 4-3 is processed on one side of the plunger pump sleeve 4-1, and a plunger pump anti-crystallization lubricating water outlet 4-4 is processed on the other side of the plunger pump sleeve 4-1. The plunger pump anti-crystallization lubricating water inlet 4-3 and the plunger pump anti-crystallization lubricating water outlet 4-4 are both connected to the inside of the plunger pump sleeve 4-1.

[0036] Example 2

[0037] The difference from the first embodiment is that, referring to the attached Figure 3 A circular shallow groove 2-14 is processed on the inner wall of the rotary valve sleeve 2, and the circular shallow groove 2-14 is connected with the circular shallow groove 1 2-5, the anti-crystallization lubricating water inlet 1 2-3 and the anti-crystallization lubricating water outlet 1 2-4.

[0038] An annular shallow groove 2-14 can be set on the inner wall of the rotary valve sleeve 2 separately, so that the anti-crystallization lubricating water passes through the annular shallow groove 2-14 and then is discharged from the anti-crystallization lubricating water outlet 2-4, which can also play the role of flushing away the crystallized liquid solute. Alternatively, an annular shallow groove 2-5 can be set on the rotary valve stem 3 and an annular shallow groove 2-14 can be set on the inner wall of the rotary valve sleeve 2, and then the anti-crystallization lubricating water can be sent in to play the same flushing role.

[0039] Although the utility model has been described in detail above with general descriptions and specific embodiments, it is obvious to those skilled in the art that some modifications or improvements can be made to the utility model. Therefore, these modifications or improvements made without departing from the spirit of the utility model are within the scope of protection claimed by the utility model.

Claims

1. An anti-crystallization multi-unit rotary switching valve, characterized in that: The multi-unit rotary switching valve body (1) comprises a rotary valve sleeve (2) and a rotary valve stem (3) arranged in the rotary valve sleeve (2), the side of the rotary valve sleeve (2) close to the front end of the rotary valve stem (3) is end face 1 (2-1), and the other side of the rotary valve sleeve (2) is end face 2 (2-2); The outer wall surface of the rotary valve sleeve (2) is processed with an anti-crystallization lubricating water inlet (2-3) and an anti-crystallization lubricating water outlet (2-4) close to the end surface (2-1), and the outer wall of the rotary valve stem (3) is processed with an annular shallow groove (2-5) connected to the anti-crystallization lubricating water inlet (2-3) and the anti-crystallization lubricating water outlet (2-4); The second end surface (2-2) is detachably connected to a sealing plate (2-6), an anti-crystallization lubricating water channel (2-7) is formed between the sealing plate (2-6) and the second end surface (2-2), and the sealing plate (2-6) is processed with a second anti-crystallization lubricating water inlet (2-8) and a second anti-crystallization lubricating water outlet (2-9) which are connected to the anti-crystallization lubricating water channel (2-7).

2. The anti-crystallization multi-unit rotary switching valve according to claim 1, characterized in that: The second anti-crystallization lubricating water inlet (2-8) is arranged above the second anti-crystallization lubricating water outlet (2-9).

3. The anti-crystallization type multi-unit rotary switching valve according to claim 1, characterized in that: An O-type sealing ring (2-10) is provided between the sealing plate (2-6) and the second end surface (2-2).

4. The anti-crystallization type multi-unit rotary switching valve according to claim 1, characterized in that: The rotary valve stem (3) comprises a drive connection component (3-1), a drive connection end (3-2) and a valve stem tail end (3-3); the drive connection component (3-1) is fixed to the front end of the drive connection end (3-2) and is arranged outside the rotary valve sleeve (2).

5. The anti-crystallization type multi-unit rotary switching valve according to claim 1, characterized in that: The rotary valve sleeve (2) is provided with a plurality of groups of fluid channels, each group of fluid channels comprising channel hole one (2-11), channel hole two (2-12) and channel hole three (2-13), and the channel hole one (2-11), channel hole two (2-12) and channel hole three (2-13) are located on the same cylindrical cross section.

6. The anti-crystallization type multi-unit rotary switching valve according to claim 1, characterized in that: The inner wall of the rotary valve sleeve (2) is processed with an annular shallow groove 2 (2-14), and the annular shallow groove 2 (2-14) is connected with the annular shallow groove 1 (2-5), the anti-crystallization lubricating water inlet 1 (2-3) and the anti-crystallization lubricating water outlet 1 (2-4).

7. The anti-crystallization type multi-unit rotary switching valve according to claim 1, characterized in that: The bottom end of the rotary valve sleeve (2) is detachably connected to a plurality of anti-crystallization plugs (4), and the plurality of anti-crystallization plugs (4) are distributed at equal intervals.

8. The anti-crystallization type multi-unit rotary switching valve according to claim 7, characterized in that: The anti-crystallization plunger (4) comprises a plunger pump sleeve (4-1) and a plunger pump rod (4-2) arranged in the plunger pump sleeve (4-1); a plunger pump anti-crystallization lubricating water inlet (4-3) is processed on one side of the plunger pump sleeve (4-1); a plunger pump anti-crystallization lubricating water outlet (4-4) is processed on the other side of the plunger pump sleeve (4-1); the plunger pump anti-crystallization lubricating water inlet (4-3) and the plunger pump anti-crystallization lubricating water outlet (4-4) are both connected to the interior of the plunger pump sleeve (4-1).

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