Anti-freezing and anti-blocking system for dosing pipe
By introducing a purge pipe and valve control system into the dosing pipeline, and utilizing high-pressure gas reverse purging and micro-positive pressure technology, the problem of freezing and blockage of the dosing pipe in low-temperature environments was solved, and the stable operation of the dosing system was achieved.
Patent Information
- Application Number
- CN202423193758.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-23
- Publication Date
- 2025-11-07
- Estimated Expiration
- 2034-12-23
AI Technical Summary
In low-temperature environments, chemical dosing pipes in wastewater treatment plants are prone to freezing and blockage, which can affect the normal operation of the dosing system.
A purge pipe and multiple sets of valves are added to the dosing pipeline system to use high-pressure gas to purge residual liquid back into the dosing tank, and to maintain a slight positive pressure in the dosing pipeline when the system is shut down to prevent water vapor from condensing and freezing.
It effectively prevents the dosing pipeline from freezing and becoming blocked due to low temperature, ensures the normal operation of the dosing system in low temperature environment, and avoids drug residue and pipe wall accumulation.
Smart Images
Figure CN223524983U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to water treatment equipment technical field, concretely relates to dosing pipe anti -icing anti -block system. BACKGROUND
[0002] The sewage treatment plant needs to add various reagents to carry out chemical treatment on sewage when treating sewage, in order to save operation cost, the dosing system is usually intermittent operation, it will adjust dosing according to water quality, and will also stop dosing in necessary conditions, for example, in the winter period of northern region, daytime temperature is below zero for a long time, nighttime temperature can reach minus 30 degrees below zero, the part of system located in the room takes heating measures, maintains production workshop to be above 10 DEG C, to prevent freezing, but in the open air, although insulation layer and electric heat tracing, buried treatment are carried out, the upper part of part of pool body still cannot completely ensure that the pipe body is not frozen, especially in the section entering the pool body, is still prone to freezing under the influence of the condensation in the pipeline after the water vapor evaporation of pool, and then can cause the dosing pipe to be blocked, the dosing system cannot normally operate.
[0003] In view of this, the present application proposes a design or technical improvement to solve the above problems.
[0004] The above content is only used to assist in understanding the technical scheme of the utility model, and does not represent that the above content is the closest prior art. UTILITY MODEL CONTENT
[0005] The utility model aims at solving the above -mentioned insufficient, provides a dosing pipe anti -icing anti -block system.
[0006] In order to solve the above technical problem, the utility model adopts the following technical scheme:
[0007] Dosing pipe anti -icing anti -block system, including dosing tank, with dosing tank The dosing pipe and the first valve that sets up in the dosing pipe dosing end position, still include high pressure gas tank, the compressor that is communicated to its inside high pressure gas is added to high pressure gas tank, and high pressure gas tank is communicated to the dosing end of dosing pipe through the sweep pipe set up on it, be provided with second valve on the sweep pipe;The backflow pipe that is communicated to dosing tank is still provided on the dosing pipe, be provided with third valve on the backflow pipe, be provided with the fourth valve on the dosing pipe and located the backflow pipe and dosing pipe communication point deviate dosing tank one side;The first valve is located and the sweep pipe communication point deviate dosing end one side of dosing pipe.
[0008] Further, the fifth valve is further provided on the dosing pipe and located between the second valve and the third valve and the communication points of the dosing pipe, respectively.
[0009] Further, the medicine adding end of the medicine adding pipe is internally provided with a blockage cleaning assembly for cleaning the internal pipe wall; the blockage cleaning assembly comprises a mounting frame arranged on the inner wall of the medicine adding tank, a rotating shaft rotatably arranged on the mounting frame, a spiral impeller arranged on the rotating shaft, and a scraper arranged on the rotating shaft and slidingly fitted with the inner wall of the medicine adding tank.
[0010] Further, the scraper is arranged on a rotating ring sleeved with the outer end of the rotating shaft, and the inner diameter of the rotating ring is larger than the diameter of the rotating shaft; a first limiting sliding groove is formed in the rotating shaft, and a limiting clamping arm is arranged on the rotating ring and clamped in the first limiting sliding groove for limiting sliding; a reciprocating assembly for driving the rotating ring to move up and down is further arranged on the rotating shaft.
[0011] Further, the reciprocating assembly comprises a reciprocating threaded screw rod arranged at the lower end of the rotating shaft and having the same diameter as the rotating shaft, and a screw rod sleeve adapted to be sleeved on the reciprocating threaded screw rod and reciprocatingly movable and abuttingly fitted with the bottom end of the rotating ring.
[0012] Further, a limiting sliding plate is arranged on the screw rod sleeve, and a second limiting sliding groove for limiting sliding of the limiting sliding plate is formed in the inner wall of the medicine adding tank.
[0013] Further, limiting ring plates for limiting the movement of the screw rod sleeve are arranged at the upper and lower ends of the reciprocating threaded screw rod.
[0014] Further, a circular truncated conical flow guide ring plate is arranged on the upper side of the limiting ring plate.
[0015] Compared with the prior art, the beneficial effects of the scheme are as follows: by adding a blowing pipe for blowing the high-pressure gas sent by the medicine adding pipe into the pipe to the conventional medicine adding pipe system, and cooperating with the control of multiple valves, the reverse blowing action of the internal pipe after the medicine adding work is completed is realized, so that the residual liquid medicine in the pipe is blown back into the medicine adding tank, so that the internal pipe is not blocked due to the influence of low temperature.
[0016] Through the arrangement of the blowing pipe, the gas sending amount into the medicine adding pipe can be adjusted by the second valve when the medicine adding system is shut down, so that the internal pipe of the medicine adding pipe always has a slight positive pressure, and the water vapor in the pool body is prevented from entering the pipe and condensing and freezing to block the pipe. BRIEF DESCRIPTION OF DRAWINGS
[0017] The drawings accompanying the specification of this application form a part hereof, serve to provide further understanding of the present application, and together with the description of the present application, serve to explain the present application. The schematic embodiments of the present application and the description thereof are used to explain the present application, and do not constitute an improper limitation on the present application. In the drawings:
[0018] Figure 1 is a front view of the embodiment of the present application;
[0019] Figure 2It is the inside structure schematic view of the dosing pipe dosing end part in the embodiment of the utility model;
[0020] Figure 3 It is the bottom view schematic view of the dosing pipe dosing end part in the embodiment of the utility model;
[0021] Figure 4 It is the inside structure schematic view of the dosing pipe in the embodiment of the utility model;
[0022] Figure 5 It is the disassembly schematic view of the limiting arm and the rotating shaft in the embodiment of the utility model;
[0023] Figure 6 It is the structure schematic view of the reciprocating screw thread screw rod in the embodiment of the utility model.
[0024] In the drawing: 1, dosing tank; 11, dosing pipe; 12, first valve; 2, high-pressure gas tank; 21, compressor; 22, purge pipe; 23, second valve; 24, return pipe; 25, third valve; 26, fourth valve; 3, fifth valve; 4, mounting frame; 41, rotating shaft; 42, spiral impeller; 43, scraper; 5, rotating ring; 51, first limiting sliding groove; 52, limiting arm; 6, reciprocating screw thread screw rod; 61, screw rod sleeve; 62, limiting sliding plate; 63, second limiting sliding groove; 7, limiting ring plate; 71, flow guide ring plate. DETAILED DESCRIPTION
[0025] The technical scheme in the embodiments of the utility model will be described clearly and completely in combination with the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. The embodiments in the application and the features in the embodiments can be combined with each other without conflict. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the protection scope of the utility model.
[0026] As Figures 1-6The shown dosing pipe anti-freezing and anti-blocking system comprises a dosing tank 1, a dosing pipe 11 communicated with the dosing tank 1, a first valve 12 arranged at the dosing end of the dosing pipe 11, a high-pressure gas tank 2, a compressor 21 communicated with the high-pressure gas tank 2 to inject high-pressure gas into the high-pressure gas tank 2, and a purge pipe 22 communicated with the dosing end of the dosing pipe 11 and arranged on the high-pressure gas tank 2, wherein a second valve 23 is arranged on the purge pipe 22; a return pipe 24 communicated with the dosing tank 1 is arranged on the dosing pipe 11, a third valve 25 is arranged on the return pipe 24, a fourth valve 26 is arranged on the dosing pipe 11 at a position deviated from the communication point between the return pipe 24 and the dosing pipe 11 towards the dosing tank 1, and the pipe segment provided with the fourth valve 26 is located indoors; the first valve 12 is located at a position deviated from the communication point between the dosing pipe 11 and the purge pipe 22 towards the dosing end, and the system equipment is automatically controlled by a PLC controller; in the normal use, the second valve 23 and the third valve 25 are closed, the fourth valve 26 and the first valve 12 are opened, and then the liquid medicine in the dosing tank 1 is injected into the sewage pool through the dosing pipe 11; when the injection is completed, the first valve 12 and the fourth valve 26 are closed, the second valve 23 and the third valve 25 are opened, and then the high-pressure gas flow in the high-pressure gas tank 2 is delivered into the dosing pipe 11 through the purge pipe 22, and the residual liquid medicine in the dosing pipe 11 is reversely blown and returned to the dosing tank 1 through the return pipe 24 for re-storage, so as to prevent the internal liquid medicine from being thawed to cause the pipe blockage due to the influence of low temperature on the external pipe segment.
[0027] In an embodiment, a fifth valve 3 is arranged on the dosing pipe 11 at a position between the communication points between the second valve 23 and the third valve 25 and the dosing pipe 11; when the whole equipment is in a shutdown state, the third valve 25, the fourth valve 26 and the fifth valve 3 are closed, the second valve 23 and the first valve 12 are opened, and the opening degree of the second valve 23 is adjusted to be small, so that the purge pipe 22 delivers a small gas flow into the dosing pipe 11 to keep the internal pressure in a slightly positive state, thereby preventing the pool water vapor from entering the pipe to condense and freeze to block the pipe.
[0028] In an embodiment, the inside of the medicine adding end of the medicine adding pipe 11 is further provided with a unblocking assembly for cleaning the inner wall of the pipe; the unblocking assembly comprises a mounting frame 4 arranged on the inner wall of the medicine tank 1, a rotating shaft 41 rotatably arranged on the mounting frame 4, a spiral impeller 42 arranged on the rotating shaft 41, and a scraper 43 arranged on the rotating shaft 41 and slidingly fitted with the inner wall of the medicine tank 1. In order to further strengthen the anti-blocking effect of the pipeline, the unblocking assembly is further arranged. When the pipe is added with medicine, the liquid medicine will flow to the position of the spiral impeller 42, thereby driving the rotating shaft 41 to rotate. The rotating shaft 41 drives the scraper 43 to rotate synchronously in the process of rotating, thereby scraping off the liquid medicine and solid particles on the pipe wall of the medicine adding end, preventing the pipe wall from adhering and accumulating impurities, and causing the pipe opening to be blocked. This structure can ensure that the medicine adding end of the medicine adding pipe 11 always remains unblocked when the pipe is added with medicine.
[0029] In an embodiment, the scraper 43 is arranged on a rotating ring 5 sleeved on the outer end of the rotating shaft 41, and the inner diameter of the rotating ring 5 is greater than the diameter of the rotating shaft 41. A first limiting sliding groove 51 is formed on the rotating shaft 41, and a limiting clamping arm 52 is arranged on the rotating ring 5 and clamped in the first limiting sliding groove 51 for limiting sliding. A reciprocating assembly for driving the rotating ring 5 to move up and down is further arranged on the rotating shaft 41. The reciprocating assembly comprises a reciprocating threaded screw rod 6 arranged on the lower end of the rotating shaft 41 and having the same diameter as the rotating shaft 41, and a screw rod sleeve 61 which is adapted to be sleeved on the reciprocating threaded screw rod 6 and reciprocally moves and is movably abutted with the bottom end of the rotating ring 5. A limiting sliding plate 62 is arranged on the screw rod sleeve 61, and a second limiting sliding groove 63 is formed on the inner wall of the medicine tank 1 for limiting sliding of the limiting sliding plate 62. When the rotating shaft 41 rotates, it drives the rotating ring 5 to rotate synchronously through the limiting clamping arms 52 at both ends, thereby driving the scraper 43 to rotate for scraping the pipe wall of the medicine adding pipe 11. At the same time, the rotating shaft 41 also drives the reciprocating threaded screw rod 6 to rotate synchronously, thereby driving the screw rod sleeve 61 to reciprocate on the reciprocating threaded screw rod 6. The reciprocating threaded screw rod 6 moves upward to abut the rotating ring 5 to move upward synchronously, and the rotating ring 5 moves downward under the action of liquid impact and gravity, thereby moving upward and downward synchronously when the rotating ring 5 drives the scraper 43 to rotate and abut the inner wall of the medicine adding pipe 11, thereby improving the range of the scraper 43 scraping the inner wall of the medicine adding pipe 11 and ensuring that most of the pipe section entering the pool body can continuously be unblocked.
[0030] In an embodiment, limiting ring plates 7 are arranged at the upper and lower ends of the reciprocating threaded screw rod 6 for limiting the movement of the screw rod sleeve 61, thereby ensuring that the screw rod sleeve 61 does not come off the reciprocating threaded screw rod 6.
[0031] In an embodiment, the upper side of the limiting ring plate 7 is provided with a circular truncated cone-shaped flow guide ring plate 71, through the setting of the flow guide ring plate 71, when the liquid medicine passes through the upper end of the limiting ring plate 7, it will be guided to slide down by the inclined surface of the flow guide ring plate 71, thereby preventing the liquid medicine or solid particles from accumulating on the reciprocating screw rod 6.
[0032] It is obvious for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, but can be implemented in other concrete forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be regarded as exemplary and non-limiting, the scope of the present application is defined by the appended claims rather than the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application.
Claims
1. A medicated pipe anti-freezing and anti-blocking system, comprising a medicated tank (1), a medicated pipe (11) in communication with the medicated tank (1), and a first valve (12) arranged at a medicated end of the medicated pipe (11), characterized in that: a high-pressure gas tank (2) is further included, the high-pressure gas tank (2) is communicated with a compressor (21) for filling high-pressure gas into the high-pressure gas tank (2), and the high-pressure gas tank (2) is communicated to the medicated end of the medicated pipe (11) through a purge pipe (22) arranged thereon, and a second valve (23) is arranged on the purge pipe (22); a return pipe (24) in communication with the medicated tank (1) is further arranged on the medicated pipe (11), a third valve (25) is arranged on the return pipe (24), and a fourth valve (26) is arranged on the medicated pipe (11) at a position deviated from the medicated tank (1) side of a communication point between the return pipe (24) and the medicated pipe (11); the first valve (12) is arranged at a position deviated from the medicated end side of a communication point between the medicated pipe (11) and the purge pipe (22); a fifth valve (3) is further arranged on the medicated pipe (11) at a position between the second valve (23) and the third valve (25) and the communication points between the medicated pipe (11) and the second valve (23) and the third valve (25), respectively; a de-blocking assembly for cleaning the inner wall of the medicated pipe (11) is further arranged inside the medicated end of the medicated pipe (11); the de-blocking assembly comprises a mounting bracket (4) arranged on the inner wall of the medicated tank (1), a rotating shaft (41) rotatably arranged on the mounting bracket (4), a spiral impeller (42) arranged on the rotating shaft (41), and a scraper (43) arranged on the rotating shaft (41) and slidably attached to the inner wall of the medicated tank (1); the scraper (43) is arranged on a rotating ring (5) sleeved on the outer end of the rotating shaft (41), the inner diameter of the rotating ring (5) is larger than the diameter of the rotating shaft (41), a first limiting sliding groove (51) is formed on the rotating shaft (41), and a limiting clamping arm (52) is arranged on the rotating ring (5) and clamped in the first limiting sliding groove (51) for limiting sliding; a reciprocating assembly for driving the rotating ring (5) to move up and down is further arranged on the rotating shaft (41); the reciprocating assembly comprises a reciprocating threaded screw rod (6) arranged at the lower end of the rotating shaft (41) and having the same diameter as the rotating shaft (41), and a screw rod sleeve (61) adapted to be sleeved on the reciprocating threaded screw rod (6) and reciprocally movable and abuttingly engaged with the bottom end of the rotating ring (5); a limiting sliding plate (62) is arranged on the screw rod sleeve (61), and a second limiting sliding groove (63) is formed on the inner wall of the medicated tank (1) for limiting sliding of the limiting sliding plate (62); limiting ring plates (7) are arranged at the upper and lower ends of the reciprocating threaded screw rod (6) for limiting the reciprocating movement of the screw rod sleeve (61); and a circular truncated conical flow guide ring plate (71) is arranged on the upper side of the limiting ring plate (7). 2. The freeze and blockage prevention system for medicated pipes of claim 1, wherein: 3. The freeze and blockage prevention system for medicated tubing of claim 1 or 2, wherein: 4. The freeze and blockage prevention system for medicated tubing of claim 3, wherein: 5. The freeze and blockage prevention system for medicated tubing of claim 4, wherein: 6. The freeze and blockage prevention system for medicated tubing of claim 5, wherein: 7. A freeze and blockage prevention system for a medicated tube according to claim 5 or 6, wherein: 8. The freeze and blockage prevention system for medicated tubing of claim 7, wherein: