Water supply and drainage pipe and sewage pipe sealing rubber ring ethylene propylene rubber mixing circulating cooling conveying device

Abstract

A water supply and drainage pipe and sewage pipe sealing rubber ring ethylene propylene rubber mixing circulating cooling conveying device comprises a cooling water tank, a circulating water pump and a mixing defoaming mechanism which are connected through pipelines, and the mixing defoaming mechanism is further connected with an agent tank through a pipeline. According to the utility model, external circulating cooling water and a medicament are fully mixed in the mixing and defoaming mechanism, so that the concentration of the medicament injected into the cooling water tank is stable, and a small amount of foam liquid generated by mixing the cooling water and the medicament passes through the conical feeding cavity at a high speed to form high-speed rotating fluid on the side wall of the feeding cavity; foams are broken through fluid centrifugation and the extrusion effect of a defoaming screen in the defoaming cavity, namely, the defoaming and mixing effects are achieved in the mixing and defoaming mechanism, a large amount of foams can be prevented from existing in the cooling water tank, and the extrusion effect of water supply and drainage pipe and sewage pipe sealing rubber ring ethylene propylene rubber mixed rubber is improved; an operator can conveniently monitor the ethylene propylene rubber mixing and extruding effect of the sealing rubber rings of the water supply and drainage pipes and the sewage pipes and the product quality.

Description

Technical Field

[0001] The utility model relates to the technical field of ethylene propylene rubber mixing circulation cooling and conveying for sealing rubber rings of water supply and drainage pipes and sewage pipes, in particular to an ethylene propylene rubber mixing circulation cooling and conveying device for sealing rubber rings of water supply and drainage pipes and sewage pipes. Background Art

[0002] At present, low Mooney value EPDM rubber is produced by extruder. During the extrusion molding process, the high-temperature rubber mixture must be cooled through a cooling water tank after extrusion. At the same time, in order to reduce the adhesion of the molded rubber mixture in the flat vulcanization process, resulting in dimensional instability and substandard quality of the vulcanized products, an appropriate amount of agent (mainly emulsified calcium stearate isolation agent) must be injected into the cooling circulating water. Due to the long-term extrusion operation of the cooling rubber strip and the circulation of the cooling water, a certain amount of isolation agent will be taken away and lost. This requires regular replenishment of the isolation agent based on experience to prevent the isolation effect from being reduced due to changes in the agent concentration.

[0003] In the past, the process was to regularly inject the agent into the cooling water tank through a metering pump. This operation is difficult to control and run stably, and it is also difficult to obtain a stable concentration of the isolation agent in the circulating cooling water tank. Excessive use of the isolation agent concentration will affect the quality and appearance of the vulcanized product in the next process, while insufficient use will cause the mixed rubber to stick together. Secondly, this open isolation agent is directly injected into the cooling water tank, and there is also the problem of uneven concentration distribution of the agent in the cooling water, which causes local foaming and hinders the operator from directly observing the extrusion effect of the mixed rubber and monitoring the product quality. When the foam is serious, there may be insurmountable problems such as the extrusion process being unable to operate normally.

[0004] Therefore, in view of the shortcomings of the prior art, it is necessary to provide an EPDM mixing circulation cooling and conveying device for sealing rubber rings of drainage pipes and sewage pipes to solve the shortcomings of the prior art. Utility Model Content

[0005] The purpose of the utility model is to avoid the deficiencies of the prior art and provide an EPDM mixing circulation cooling and conveying device for sealing rubber rings of drainage pipes and sewage pipes. The EPDM mixing circulation cooling and conveying device for sealing rubber rings of drainage pipes and sewage pipes fully mixes external circulating cooling water and a medicine in a mixing and foam-breaking mechanism, so that the concentration of the medicine injected into the cooling water tank is stable. A small amount of foam liquid generated by the mixing of cooling water and a medicine in the present application passes through the conical feeding cavity at the bottom of the mixing and foam-breaking mechanism at a high speed, forms a high-speed rotating fluid on the side wall of the feeding cavity, flows into the defoaming cavity at a high speed, and breaks the foam through the centrifugal action of the fluid and the extrusion action of the defoaming screen inside the defoaming cavity, that is, the defoaming mixing effect is achieved in the mixing and foam-breaking mechanism, the disadvantage of a large amount of foam in the cooling water tank can be avoided, the extrusion effect of the EPDM mixing rubber of the sealing rubber rings of drainage pipes and sewage pipes is improved, and it is convenient for the operator to monitor the mixing and extrusion effect of the EPDM mixing rubber of the sealing rubber rings of drainage pipes and sewage pipes and the product quality.

[0006] The above-mentioned purpose of the utility model is achieved through the following technical means.

[0007] Provide an EPDM mixing circulation cooling and conveying device for sealing rubber rings of drainage pipes and sewage pipes, including a cooling water tank, a circulating water pump and a mixing and foaming mechanism. The cooling water tank, the circulating water pump and the mixing and foaming mechanism are interconnected by pipelines, and the mixing and foaming mechanism is also connected to a reagent tank by pipeline;

[0008] The mixing and foam breaking mechanism comprises an outer shell, the interior of which is composed of a feeding chamber, a defoaming chamber and a mixing chamber which are connected in sequence from bottom to top; a foam breaking inlet water valve and a foam breaking inlet chemical valve are arranged on the side wall of the feeding chamber, a foam breaking liquid outlet valve is arranged on the top of the mixing chamber, a water tank inlet water valve and a water tank outlet water valve are arranged on the cooling water tank, the water tank outlet water valve is connected to the water inlet pipeline of the circulating water pump, the water outlet of the circulating water pump is connected to the foam breaking inlet water valve pipeline, the foam breaking liquid outlet valve is connected to the water tank inlet water valve pipeline, and the foam breaking inlet chemical valve is connected to the outlet pipeline of the chemical tank.

[0009] Specifically, the feeding chamber is cone-shaped, a partition is installed between the feeding chamber and the defoaming chamber, a white steel jet tube is provided on the partition to connect the feeding chamber and the defoaming chamber, no less than 2 defoaming screens are installed inside the defoaming chamber, and a number of defoaming holes are provided on the defoaming screens.

[0010] Preferably, a metering pump is installed between the bubble breaking inlet medicine valve and the outlet of the medicine tank, and a sampling valve is also provided on the mixing chamber.

[0011] Specifically, the bottom diameter of the feeding cavity is smaller than the top diameter.

[0012] Furthermore, the mixing chamber is in a frustum shape, and the bottom diameter of the mixing chamber is larger than the top diameter.

[0013] The utility model fully mixes the external circulating cooling water and the medicine in the mixing and foaming mechanism so that the concentration of the medicine injected into the cooling water tank is stable. A small amount of foam liquid generated by the mixing of the cooling water and the medicine passes through the conical feeding chamber at the bottom of the mixing and foaming mechanism at a high speed, forms a high-speed rotating fluid on the side wall of the feeding chamber, flows into the defoaming chamber at a high speed, and breaks the foam through the centrifugal action of the fluid and the extrusion action of the defoaming screen inside the defoaming chamber, that is, the defoaming mixing effect is achieved in the mixing and foaming mechanism, the disadvantage of a large amount of foam in the cooling water tank can be avoided, the extrusion effect of the ethylene-propylene rubber compound rubber of the sealing rubber ring of the water supply and drainage pipe and the sewage pipe is improved, and the operator is convenient to monitor the extrusion effect of the ethylene-propylene rubber compound rubber of the sealing rubber ring of the water supply and drainage pipe and the sewage pipe and the product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention is further described with reference to the accompanying drawings, but the contents in the accompanying drawings do not constitute any limitation to the present invention.

[0015] Figure 1 The utility model is a structural schematic diagram of an ethylene-propylene rubber mixing circulation cooling and conveying device for sealing rubber rings of water supply and drainage pipes and sewage pipes.

[0016] Figure 2 The utility model is a structural schematic diagram of a mixing and foam breaking mechanism of an ethylene-propylene rubber mixing circulation cooling and conveying device for sealing rubber rings of water supply and drainage pipes and sewage pipes.

[0017] from Figure 1 to Figure 2 Including:

[0018] 1. Cooling water tank;

[0019] 101, water tank inlet valve, 102, water tank outlet valve;

[0020] 2. Circulating water pump;

[0021] 3. Mixing and foam breaking mechanism;

[0022] 301, outer shell, 302, feeding cavity, 303, defoaming cavity, 304, mixing cavity, 305, defoaming inlet water valve, 306, defoaming inlet medicine valve, 307, defoaming liquid outlet valve, 308, partition plate, 309, stainless steel jet tube, 310, defoaming screen, 311, defoaming hole, 312, sampling valve;

[0023] 4. Medicine jars;

[0024] 5. Metering pump. DETAILED DESCRIPTION

[0025] The utility model is further described in conjunction with the following embodiments.

[0026] Example 1.

[0027] like Figure 1-2 As shown, an EPDM mixing circulation cooling and conveying device for sealing rubber rings for water supply and drainage pipes and sewage pipes, the present application is used for mixing and circulating cooling of EPDM mixing rubber rings for sealing rubber rings for water supply and drainage pipes and sewage pipes, comprising a cooling water tank 1, a circulating water pump 2 and a mixing and foaming mechanism 3, the cooling water tank 1, the circulating water pump 2 and the mixing and foaming mechanism 3 are interconnected by pipelines, the mixing and foaming mechanism 3 is also pipeline-connected to a reagent tank 4, the connecting pipelines of each component can be connected by φ25-φ32 carbon steel or white steel pipelines according to actual production conditions, and the corresponding connecting valves also use pipelines and flanges of the same specifications.

[0028] The mixing and foam breaking mechanism 3 includes an outer shell 301, the total height of the outer shell 301 is 1200 mm, and the diameter is 300 mm. The interior of the outer shell 301 is composed of a feeding chamber 302, a defoaming chamber 303 and a mixing chamber 304 which are connected in sequence from bottom to top. A defoaming inlet water valve 305 and a defoaming inlet medicine valve 306 are provided on the side wall of the feeding chamber 302, and a defoaming liquid outlet valve 307 is provided on the top of the mixing chamber 304. A water tank inlet water valve 101 and a water tank outlet water valve 102 are provided on the cooling water tank 1, the water tank outlet water valve 102 is connected to the water inlet pipeline of the circulating water pump 2, the water outlet of the circulating water pump 2 is connected to the defoaming inlet water valve 305 pipeline, the defoaming liquid outlet valve 307 is connected to the water tank inlet water valve 101 pipeline, and the defoaming inlet medicine valve 306 is connected to the outlet pipeline of the medicine tank 4.

[0029] The feeding chamber 302 is in the shape of a cone, and the feeding chamber 302 is a cone with a height of 500 mm. A partition plate 308 is installed between the feeding chamber 302 and the defoaming chamber 303. A white steel jet tube 309 with a diameter of 50 mm and a length of 180 mm is welded on the partition plate 308 to connect the feeding chamber 302 and the defoaming chamber 303. The fluid can enter from the side wall of the feeding chamber 302 and be ejected upward from the bottom of the white steel jet tube 309. The defoaming chamber 303 is a main body with a height of 400 mm. No less than 2 defoaming screens 310 are installed inside the defoaming chamber 303. A plurality of defoaming holes 311 are provided on the defoaming screen 310. Each layer of the defoaming screen 310 is arranged with 35-45 defoaming holes 311 with a diameter of 2 mm to 2.5 mm. The mixing chamber 304 is a cavity with a height of 300 mm.

[0030] A metering pump 5 is installed between the bubble breaking inlet medicine valve 306 and the outlet of the medicine tank 4 , and a sampling valve 312 is also provided on the mixing chamber 304 .

[0031] The bottom diameter of the feeding chamber 302 is smaller than the top diameter, so that a high-speed rotating fluid can be formed inside the feeding chamber 302 , and flows into the defoaming chamber 303 through the stainless steel jet pipe 309 .

[0032] The mixing chamber 304 is in a truncated cone shape, and the bottom diameter of the mixing chamber 304 is larger than the top diameter to improve the mixing effect.

[0033] Working principle: During the mixing and cooling process of EPDM rubber sealing rings for water supply and drainage pipes and sewage pipes, fill the cooling water tank 1 with cooling water. In industrial production, it is best to use deionized water, so that the cooling water can naturally flow back from the water tank outlet valve 102. After the entire cooling system is filled with cooling water, stop filling the water, start the circulating water pump 2, and the circulating cooling water flows in through the bubble breaking inlet water valve 305, and flows to the water tank inlet water valve 101 through the bubble breaking liquid outlet valve 307. The cooling water circulates in the cooling water for 1-2 minutes, then open the outlet valve of the reagent tank 4 and the bubble breaking inlet reagent valve 306 of the mixing and foam breaking mechanism 3, start the metering pump 5, and inject the reagent and circulating water into the cone at the lower end of the mixing and foam breaking mechanism 3. In the feeding chamber 302, a high-speed rotating fluid is formed in the feeding chamber 302, and flows upward from the lower end of the white steel jet tube 309 into the defoaming chamber 303 at a high speed. The entrained liquid foam is defoamed by the defoaming holes 311 on the defoaming screen 310 provided in the defoaming chamber 303, and then enters the mixing chamber 304 for mixing. Finally, cooling water with a stable agent concentration is formed, which flows from the defoaming liquid outlet valve 307 to the water tank inlet water valve 101 and then enters the cooling water tank 1. During this period, the agent concentration in the circulating water can be sampled and analyzed through the sampling valve 312 of the mixing and defoaming mechanism 3. If it is qualified, the metering pump 5 is closed, and the EPDM rubber mixing operation is carried out after the circulating cooling water delivery is stabilized and runs for 5-10 minutes.

[0034] When EPDM rubber is extruded for a long time, the reagent in the circulating water will be taken away or consumed. During the production process, the concentration of the reagent in the circulating water is analyzed by the sampling valve 312 of the mixing and foam breaking mechanism 3, and sampling is performed regularly for monitoring. If the sampling concentration fluctuates or decreases, the reagent metering pump 5 is restarted according to the process conditions, and the reagent is injected in proportion. During the production process, the water volume of the cooling water tank 1 is ensured to be sufficient and the concentration of the reagent in the cooling water tank 1 is stable.

[0035] The utility model fully mixes the external circulating cooling water and the medicine in the mixing and foaming mechanism, so that the concentration of the medicine injected into the cooling water tank 1 is stable, and a small amount of foam liquid generated by the mixing of the cooling water and the medicine of the present application passes through the conical feeding chamber 302 at the bottom of the mixing and foaming mechanism 3 at a high speed, forms a high-speed rotating fluid on the side wall of the feeding chamber 302, flows into the defoaming chamber 303 at a high speed, and breaks the foam by the centrifugation of the fluid and the squeezing action of the defoaming screen 310 inside the defoaming chamber 303, that is, the defoaming mixing effect is achieved in the mixing and foaming mechanism 3, and the disadvantage of a large amount of foam in the cooling water tank 1 can be avoided, and the extrusion effect of the ethylene-propylene rubber compound of the sealing rubber ring of the water supply and drainage pipe and the sewage pipe is improved, which is convenient for the operator to monitor the extrusion effect of the ethylene-propylene rubber compound of the sealing rubber ring of the water supply and drainage pipe and the sewage pipe and the product quality.

[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit the protection scope of the utility model. Although the utility model is described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the essence and scope of the technical solution of the utility model.

Claims

1. EPDM mixing circulation cooling and conveying device for sealing rubber rings of water supply and drainage pipes and sewage pipes, characterized by: It includes a cooling water tank, a circulating water pump and a mixing and foam-breaking mechanism, wherein the cooling water tank, the circulating water pump and the mixing and foam-breaking mechanism are mutually connected by pipelines, and the mixing and foam-breaking mechanism is also connected to a medicine tank by pipelines; The mixing and foam breaking mechanism comprises an outer shell, the interior of which is composed of a feeding chamber, a defoaming chamber and a mixing chamber which are connected in sequence from bottom to top; a defoaming inlet water valve and a defoaming inlet medicine valve are provided on the side wall of the feeding chamber, a defoaming liquid outlet valve is provided on the top of the mixing chamber, a water tank inlet water valve and a water tank outlet water valve are provided on the cooling water tank, the water tank outlet water valve is connected to the water inlet pipeline of the circulating water pump, the water outlet of the circulating water pump is connected to the defoaming inlet water valve pipeline, the defoaming liquid outlet valve is connected to the water tank inlet water valve pipeline, and the defoaming inlet medicine valve is connected to the outlet pipeline of the medicine tank.

2. The EPDM mixing circulation cooling and conveying device for sealing rubber rings of water supply and drainage pipes and sewage pipes according to claim 1 is characterized by: The feeding chamber is in the shape of a cone, a partition plate is installed between the feeding chamber and the defoaming chamber, a stainless steel jet tube connecting the feeding chamber and the defoaming chamber is provided on the partition plate, no less than 2 defoaming screens are installed inside the defoaming chamber, and a plurality of defoaming holes are provided on the defoaming screen.

3. The ethylene-propylene rubber mixing circulation cooling and conveying device for sealing rubber rings of water supply and drainage pipes and sewage pipes according to claim 2 is characterized by: A metering pump is installed between the bubble breaking inlet medicine valve and the outlet of the medicine tank, and a sampling valve is also provided on the mixing chamber.

4. The EPDM mixing circulation cooling and conveying device for sealing rubber rings of water supply and drainage pipes and sewage pipes according to claim 3 is characterized by: The bottom diameter of the feeding cavity is smaller than the top diameter.

5. The ethylene-propylene rubber mixing circulation cooling and conveying device for sealing rubber rings of water supply and drainage pipes and sewage pipes according to claim 4 is characterized by: The mixing chamber is in a truncated cone shape, and the bottom diameter of the mixing chamber is larger than the top diameter.

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