Anti-crystallization stop valve

Abstract

This utility model discloses an anti-crystallization shut-off valve, relating to the field of shut-off valve technology. The utility model includes an inlet pipe, a valve pipe, and a valve plug pipe. The lower end of the inlet pipe is connected to an inlet branch pipe, and the upper end of the inlet pipe is threaded with a valve seat. The lower end of the valve pipe is fixedly connected to the upper end of the inlet pipe. The valve plug pipe is vertically slidably sleeved inside the valve pipe. The lower end of the valve pipe is connected to an outlet branch pipe, and a conical valve plug is fixedly installed at the lower end of the valve plug pipe. This utility model connects the inlet branch pipe at one end of the inlet pipe and the outlet branch pipe on one side of the valve pipe to the pipeline. By moving the valve plug pipe downwards, the valve seat is blocked, closing the valve and eliminating dead zones within the valve pipe, thus preventing liquid accumulation and crystallization that could block the valve. By placing the conical valve plug inside the valve seat, when the valve is opened, the valve plug pipe rises, the valve plug leaves the valve seat, and the liquid in the inlet pipe flushes the valve plug, preventing the liquid from forming a structure around the valve plug.

Description

Technical Field

[0001] This utility model belongs to the field of gate valve technology, and in particular relates to an anti-crystallization gate valve. Background Technology

[0002] In fields such as chemical engineering and water treatment, where media containing crystals are transported, traditional gate valves have significant drawbacks. When the valve is closed, a dead zone easily forms inside, causing solutes to continuously accumulate and crystallize, eventually clogging the flow channel or jamming the valve core. Simultaneously, the valve core and seat mating structure easily retains liquid during opening and closing, which, after drying, forms a stubborn crystal layer, compromising the seal. These crystallization problems not only cause frequent valve failures but also significantly increase maintenance costs and downtime risks. Therefore, there is an urgent need for a new gate valve structure that can actively avoid dead zones and prevent crystal adhesion, thereby improving the reliability and service life of valves under crystallization conditions.

[0003] To address this issue, we provide an anti-crystallization shut-off valve. Utility Model Content

[0004] The purpose of this utility model is to provide an anti-crystallization shut-off valve. This is achieved by connecting an inlet branch pipe at one end of the inlet pipe and an outlet branch pipe on one side of the valve pipe to the pipeline. A valve plug is vertically slidably fitted inside the valve pipe. A valve seat is installed at the upper end of the inlet pipe. Moving the valve plug downwards blocks the valve seat, closing the valve and eliminating dead zones within the valve pipe, thus preventing liquid accumulation and crystallization that could block the valve. A conical valve plug is installed at the lower end of the valve plug. When the valve is closed, the conical valve plug is placed inside the valve seat. When the valve is opened, the valve plug rises, the valve plug leaves the valve seat, and the liquid in the inlet pipe flushes the valve plug, preventing crystallization around the valve plug.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0006] This utility model is an anti-crystallization shut-off valve, including an inlet pipe, a valve pipe, and a valve plug pipe. The upper end of the inlet pipe is open and the lower end is closed. The lower end of the inlet pipe is connected to an inlet branch pipe. A valve seat is threaded onto the inner wall of the upper end of the inlet pipe. The lower end of the valve pipe is fixedly connected to the upper end of the inlet pipe. The valve plug pipe is vertically slidably sleeved inside the valve pipe. The lower end of the valve pipe is connected to an outlet branch pipe. A conical valve plug is fixed at the lower end of the valve plug pipe, with the pointed end of the valve plug facing downwards.

[0007] A further feature of this invention is that a water-permeable hole is vertically opened through the end face of the valve seat, and an upwardly expanding flared opening is opened at the upper end of the water-permeable hole, with the valve plug sleeved inside the flared opening at the upper end of the water-permeable hole.

[0008] A further feature of this invention is that the lower end of the water-permeable hole has a downwardly expanding flared opening.

[0009] A further feature of this invention is that a set of sealing ring grooves are axially arrayed on the outer wall of the valve plug tube, and a rubber sealing ring is fitted inside the sealing ring groove.

[0010] A further feature of this invention is that a threaded sleeve is fixedly provided at the lower end of the valve pipe, and the threaded sleeve is screwed onto the upper end of the water inlet pipe.

[0011] A further feature of this invention is that a lead screw is fixedly installed at the bottom of the closed end of the valve plug tube, and a screw handle is fixedly installed at the upper end of the lead screw.

[0012] A further feature of this invention is that a top cover is fixedly installed on the upper end of the valve pipe, and a threaded channel is provided on the plate surface of the top cover, with the screw thread engaged in the threaded channel.

[0013] A further feature of this invention is that a valve plug brush sleeve is fixedly connected to each of the two side walls at the lower end of the valve tube. A valve plug brush seat is slidably sleeved inside the valve plug brush sleeve. A valve plug brush is fixedly installed at one end of the valve plug brush seat. The valve plug brush is attached to the side wall of the valve plug tube. A pipe end cap is fixedly installed on the end face of the valve plug brush sleeve. A compression spring is fixedly connected to the end of the valve plug brush seat away from the valve plug brush. The end of the compression spring away from the valve plug brush is fixedly connected to the end face of the pipe end cap.

[0014] A further feature of this invention is that a set of through holes are provided through the valve plug brush seat, and a vent hole is provided through the plate surface of the pipe end cap.

[0015] This utility model has the following beneficial effects:

[0016] 1. This utility model connects the inlet branch pipe at one end of the inlet pipe and the outlet branch pipe on one side of the valve pipe to the pipeline. A valve plug is vertically slidably sleeved inside the valve pipe. A valve seat is set at the upper end of the inlet pipe. The valve plug is moved downward to block the valve seat, thereby closing the valve. This eliminates the dead zone inside the valve pipe, preventing liquid from accumulating in the dead zone and forming crystals, which would cause valve blockage.

[0017] 2. This utility model provides a conical valve plug at the lower end of the valve plug tube. When the valve is closed, the conical valve plug is placed inside the valve seat. When the valve is opened, the valve plug tube rises, the valve plug leaves the valve seat, and the liquid in the inlet pipe flushes the valve plug, preventing the liquid from crystallizing around the valve plug. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1This is a schematic diagram of the structure of an anti-crystallization shut-off valve.

[0020] Figure 2 This is an exploded view of the present invention.

[0021] Figure 3 This is an exploded view of the valve plug tube and the rubber sealing ring.

[0022] Figure 4 This is a side sectional view of the present invention.

[0023] Figure 5 This is an exploded view of the valve tube and valve plug / brush seat.

[0024] The attached diagram lists the components represented by each number as follows:

[0025] 1-Inlet pipe, 101-Inlet branch pipe, 102-Valve seat, 102a-Water vent hole, 2-Valve pipe, 201-Outlet branch pipe, 202-Threaded sleeve, 203-Top cover, 203a-Threaded channel, 204-Valve plug brush sleeve, 204a-Valve plug brush seat, 204a-1-Valve plug brush, 204a-2-Compression spring, 204a-3-Through hole, 204b-Pipe end cap, 204b-1-Ventilation hole, 3-Valve plug pipe, 301-Valve plug, 302-Sealing ring groove, 302a-Rubber sealing ring, 303-Threaded rod, 303a-Turning handle. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0027] Example 1

[0028] Please see Figures 1 to 3This utility model is an anti-crystallization shut-off valve, including an inlet pipe 1, a valve pipe 2, and a valve plug pipe 3. By connecting the inlet branch pipe 101 at one end of the inlet pipe 1 and the outlet branch pipe 201 on one side of the valve pipe 2 to the pipeline, the valve plug pipe 3 is vertically slidably sleeved inside the valve pipe 2. A valve seat 102 is set at the upper end of the inlet pipe 1. The valve plug pipe 3 is moved downward to block the valve seat 102, thereby closing the valve and eliminating dead zones in the valve pipe 2, thus preventing liquid from accumulating in the dead zones and forming crystals, which would cause valve blockage. A conical valve plug 301 is set at the lower end of the valve plug pipe 3. When the valve is closed, the conical valve plug 301 is blocked inside the valve seat 102. When the valve is opened, the valve plug pipe 3 rises, and the valve plug 301 leaves the valve seat 102. The liquid in the inlet pipe 1 flushes the valve plug 301, preventing liquid from forming crystals around the valve plug 301.

[0029] Specifically, the upper end of the water inlet pipe 1 is open and the lower end is closed. The lower end of the water inlet pipe 1 is connected to the side wall of the water inlet pipe 1 and the upper end of the water inlet pipe 1 is threaded with a valve seat 102. The lower end of the valve pipe 2 is fixedly connected to the upper end of the water inlet pipe 1. The valve plug pipe 3 is vertically slidably sleeved in the valve pipe 2. The lower end of the valve pipe 2 is connected to the side wall of the water outlet pipe 201. The lower end of the valve plug pipe 3 is fixed with a conical valve plug 301 with the pointed end of the valve plug 301 facing downward.

[0030] Furthermore, a water-permeable hole 102a is vertically opened through the end face of the valve seat 102, and an upwardly expanding flared mouth is opened at the upper end of the water-permeable hole 102a, and the valve plug 301 is fitted into the flared mouth at the upper end of the water-permeable hole 102a.

[0031] Furthermore, the lower end of the permeable hole 102a is provided with a downwardly flared flared opening.

[0032] Furthermore, a set of sealing ring grooves 302 are axially arrayed on the outer side wall of the valve plug tube 3, and a rubber sealing ring 302a is sleeved inside the sealing ring groove 302 to prevent liquid from entering the gap between the valve plug tube 3 and the valve tube 2.

[0033] The operation process in this embodiment is as follows:

[0034] Connect the inlet branch pipe 101 at one end of the inlet pipe 1 and the outlet branch pipe 201 on one side of the valve pipe 2 to the pipeline. When closing the valve, move the valve plug pipe 3 downward so that the valve plug 301 blocks the flared mouth at the upper end of the water permeable hole 102a of the valve seat 102. When it is necessary to open the valve, move the valve plug 3 upward so that the valve plug 301 leaves the valve seat 102. The liquid in the inlet pipe 1 flushes the valve plug 301 to prevent the liquid from crystallizing around the valve plug 301.

[0035] Example 2

[0036] Please see Figures 1 to 5Based on Example 1, a screw 303 is fixedly installed at the bottom of the closed end of the valve plug tube 3, and a top cover 203 is fixedly installed at the upper end of the valve tube 2. By screwing the screw 303 into the threaded channel 203a on the surface of the top cover 203, rotating the screw 303 causes the screw 303 to drive the valve plug tube 3 to move up and down inside the valve tube 2.

[0037] Specifically, a threaded sleeve 202 is fixedly provided at the lower end of the valve pipe 2, and the threaded sleeve 202 is threadedly engaged with the upper end of the water inlet pipe 1.

[0038] Furthermore, a screw rod 303 is fixedly provided with a screw handle 303a at its upper end.

[0039] Furthermore, a threaded channel 203a is provided on the surface of the top cover 203, and the lead screw 303 is threaded into the threaded channel 203a.

[0040] Furthermore, a valve plug brush sleeve 204 is fixedly connected to each of the two side walls at the lower end of the valve tube 2. A valve plug brush seat 204a is slidably sleeved inside the valve plug brush sleeve 204. A valve plug brush 204a-1 is fixedly installed at one end of the valve plug brush seat 204a. The valve plug brush 204a-1 is attached to the side wall of the valve plug tube 3. A tube end cap 204b is fixedly installed on the end face of the valve plug brush sleeve 204. A compression spring 204a-2 is fixedly connected to the end of the valve plug brush seat 204a away from the valve plug brush 204a-1. The end of the compression spring 204a-2 away from the valve plug brush 204a-1 is fixedly connected to the end face of the tube end cap 204b. When the valve plug tube 3 rotates and rises and falls inside the valve tube 2, the valve plug brush 204a-1 brushes the tube wall of the valve plug tube 3, thereby ensuring the cleanliness of the outer wall of the valve plug tube 3.

[0041] Furthermore, a set of through holes 204a-3 are provided through the valve plug brush seat 204a, and a vent hole 204b-1 is provided through the plate surface of the pipe end cap 204b.

[0042] The operation process in this embodiment is as follows:

[0043] The lead screw 303 is screwed into the threaded channel 203a on the top cover 203 plate. Rotating the lead screw 303 causes the valve plug tube 3 to move up and down inside the valve tube 2. When the valve plug tube 3 rotates and rises and falls inside the valve tube 2, the valve plug brush 204a-1 brushes the tube wall of the valve plug tube 3, thereby ensuring that the outer wall of the valve plug tube 3 is clean.

[0044] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

Claims

1. A crystallization prevention shut-off valve, comprising an inlet pipe (1), a valve pipe (2), and a valve plug pipe (3), characterized in that: The upper end of the water inlet pipe (1) is open and the lower end is closed. The lower end of the water inlet pipe (1) is connected to the water inlet branch pipe (101). The upper end of the water inlet pipe (1) is threaded with a valve seat (102). The lower end of the valve pipe (2) is fixedly connected to the upper end of the water inlet pipe (1). The valve plug pipe (3) is vertically slidably sleeved in the valve pipe (2). The lower end of the valve pipe (2) is connected to the water outlet branch pipe (201). The lower end of the valve plug pipe (3) is fixed with a conical valve plug (301). The pointed end of the valve plug (301) faces downward.

2. The anti-crystallization shut-off valve according to claim 1, characterized in that: The valve seat (102) has a vertically penetrating water hole (102a) on its end face. The upper end of the water hole (102a) has an upwardly expanding flared opening. The valve plug (301) is fitted inside the flared opening at the upper end of the water hole (102a).

3. The anti-crystallization shut-off valve according to claim 2, characterized in that: The lower end of the permeable hole (102a) has a downwardly flared flared opening.

4. The anti-crystallization shut-off valve according to claim 3, characterized in that: The outer wall of the valve plug tube (3) is provided with a set of sealing ring grooves (302) arranged in an axial array, and a rubber sealing ring (302a) is sleeved in the sealing ring groove (302).

5. The anti-crystallization shut-off valve according to claim 1, characterized in that: The lower end of the valve pipe (2) is fixed with a threaded sleeve (202), which is threadedly engaged with the upper end of the water inlet pipe (1).

6. The anti-crystallization shut-off valve according to claim 5, characterized in that: A screw rod (303) is fixedly installed at the bottom of the closed end of the valve plug tube (3), and a screw handle (303a) is fixedly installed at the upper end of the screw rod (303).

7. The anti-crystallization shut-off valve according to claim 6, characterized in that: The valve tube (2) is fixedly installed with a top cover (203) at the upper end. A threaded channel (203a) is opened on the plate surface of the top cover (203), and the screw (303) is threaded into the threaded channel (203a).

8. The anti-crystallization shut-off valve according to claim 7, characterized in that: A valve plug brush sleeve (204) is fixedly connected to each of the two side walls at the lower end of the valve tube (2). A valve plug brush seat (204a) is slidably sleeved inside the valve plug brush sleeve (204). A valve plug brush (204a-1) is fixedly installed at one end of the valve plug brush seat (204a). The valve plug brush (204a-1) is attached to the side wall of the valve plug tube (3). A pipe end cap (204b) is fixedly installed on the end face of the valve plug brush sleeve (204). A compression spring (204a-2) is fixedly connected to the end of the valve plug brush seat (204a) away from the valve plug brush (204a-1). The end of the compression spring (204a-2) away from the valve plug brush (204a-1) is fixedly connected to the end face of the pipe end cap (204b).

9. The anti-crystallization shut-off valve according to claim 8, characterized in that: A set of through holes (204a-3) are provided through the valve plug brush seat (204a), and a vent hole (204b-1) is provided through the plate surface of the pipe end cap (204b).

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