⇒
⇒
Sewer Oval Hatch


Sewer Oval Hatch

Sewer Oval Hatch

I worked as a chief engineer of heating networks, so I know firsthand how many troubles standard pig-iron hatches of inspection wells are carried by underground engineering communications. One of the options for improving the hatch cover suggested by the inventor. I suggest another.

My hatch is oval, not round, with a lid that is fastened to the body by a hinge. Such connection with the hatch closed, unloaded, the load is transferred to the support ring of the hull. The recessed cover (see photo) will never fall out of the housing socket, so there is no need for a second safety cap, which is usually provided. The articulated joint makes it easy to open and close the lid, move it horizontally (when there is no strength to lift it, and without a hinge it’s really hard) will not be required, so that none of the attendants risk losing to themselves or a colleague’s leg.

I have developed a lightweight hatch for the impenetrable part of the streets and a heavy one for urban roads. Both are designed as rational offers and have been faithfully serving the heating networks for many years. Especially I want to note that the lid and the body, which are connected by means of a hinge, can be made not of cast iron, but of strong polymeric materials.

Sewer Oval Hatch

The cover is hinged to the hatch body. In the tide of the shell 1, vertical slit-like holes are made, in the tides of the lid 2 are longitudinal slots. A stepped axis 3 is passed through the holes. The diameter of its thickening is 2-3 mm less than the width of the slot. The axis during installation is freely centered in the slotted slots of the swivel joint and does not fall out of the joint due to the collars.



1 звезда2 звезды3 звезды4 звезды5 звезд (1 votes, average: 5.00 out of 5)

Sewer Oval Hatch

Related posts:

  1. Reproduction of bee colonies Natural swarming of bees. In natural conditions, the increase in the number of families occurs by digestion. Swarming is a manifestation of the instinct of reproduction of a bee family. The swarming is as follows....

  2. Internal structure of the bee’s body Muscles. The bee can produce a variety of movements: crawl, fly, bend the abdomen and sting, clean the antennae, perform various kinds of work – collect nectar and pollen, build honeycombs, etc. In addition, the...

  3. Wax Economic importance of wax The value of beeswax for the national economy is extremely large. Thanks to a number of valuable properties, beeswax is the most important raw material for the socialist industry, and is...

  4. Multifunctional server During the growth of bee colonies, swarms are formed and formed. Despite counter-measures, swarms often fly out of hives, are planted on a tree, shrub or specially arranged near the apiary, and after a while...

  5. Beekeeping stock Fig. Equipment for the care of bees: 1 – facial mesh; 2 – smoke apiary DP; 3 – therapeutic smoke DPL; 4 – chisel of the apiary SPM; 5 – working box-stool; 6 – box...

  6. External structure of the bee’s body Outer cover. Bees, like all insects, do not have an internal bone skeleton, which in vertebrate animals represents the basis and support of the whole body. Instead of the internal skeleton, bees have a hard...

  7. Diseases of adult bees The most common diseases of adult bees are caused by parasites; most pathogens of these diseases have microscopic dimensions (for example, the causative agent of nosematosis), but there are also visible by a simple eye...

  8. Convenient roevnya The loss of a swarm results in a shortage of honey and honeycombs in the apiary. To prevent its exit, use self-made rouletteers of different designs. The proposed site allows you to combine several operations:...

  9. Wind turbine in-house Fig. 1. Two-bladed wind power unit: 1 – windmill; 2 – reducer; 3 – generator; 4 – support; 5 – tail; 6 – post; 7 – extensions; 8 – the lever. Correctly made windy unit...

  10. Hibernation of bees Properly organized bee hibernation is one of the most important tasks in beekeeping. A good winter is considered to be a wintering, in which not only there is no escape of bee colonies or corn...

  11. Bicycle and lift Bicycle carriage – lift. Often, the location of the apiary does not allow it to approach it on a truck fairly close, and it is not easy to transport multi-hull beams for a relatively large...

  12. Spring feeding bees with wine I am interested in the history of beekeeping, I purchased the book “Proceedings of the Free Economic Society for the Promotion of Agriculture and House-Building in Russia,” published in 1775. Attention was drawn to the...

  13. Universal apiary device During the active bee season at different times bees are given feeding, water, pollen, nucleuses are formed, the swarm is caught, varroa mites are killed, etc. For each operation, a separate device is usually used....

  14. Treatment with oxalic acid Reports on the use of oxalic acid vapors in varroatosis caused the response of beekeepers. They offer their devices and devices as evaporators. Many proposals deserve attention, and some are not without serious shortcomings. The...

  15. Lock-lock multi-hull beehives For roaming, multihull hives must have a reliable and convenient connection of parts of the hives. In the practice of beekeeping, many types of constructions are used for securing the hulls of multi-hull beehives –...

  16. Transportation of bees The work begins with the development of a calendar plan for the use of bees for pollination of crops. Then they get acquainted with the basic methods of using bees on pollination of plants, taking...

  17. Alpine hive -the most highly productive -The most economical -the most convenient in operation General characteristics of the hive “Alpine” is a multi-hull hive, in contrast to similar traditional structures, it has one tap, no separation grid...

  18. Bees in heated hives For the winter period, as is known, the bee family requires 8 to 15 kg of feed, depending on the climatic zone and wintering conditions. The amount of feed intake, brood heating, wax release, evaporation...

  19. Honey and Perga as food of bees For normal life and reproduction, animals, including bees, should receive with food the following nutrients: proteins, fats, carbohydrates, mineral salts, vitamins and water. All these substances are complex, high-molecular, have a large energy reserve. In...

  20. Work on an apiary at the end of a bribe and making nests for a winter Before the end of the honey collection, it is necessary to immediately begin to organize the hives and prevent the theft of bees, which can occur when the bribe breaks. Measures against the attack of...

  21. Reproduction and development of bees Growth and development of the bee family under favorable conditions of the environment (plenty of food, proper temperature, etc.) is provided by all three forms of individuals: the uterus, working bees and drones, but their...

  22. Protection of bees from poisoning To obtain sustainable high yields of hothouse crops, pest and plant diseases are controlled using pesticides. Pesticides used in greenhouses are classified by action: – on contact – cause the death of insects when they...

  23. Mechanized platform on wheels The transition of beekeeping and beekeeping complexes to intensive technology for the care of bees provides, in particular, the use of multi-hull beehives, multiple transport of apiaries for pollination and honey collection. At the same...

  24. Hot water all winter Fig. 1 – expanding tank, 2 – control tube; 3 – water heating pipe; 4 mixer; 5 – the valve; 6 – water supply; 7 – furnace heating system; 8 – boiler of the heating...

  25. Keeping the bees in working order In the bee families exhibited in January in the hothouse, a lot of broods appear in a week. To grow it you need honey, perga and water. In search of food, bees come into active...

  26. Temperature control in the pavilion When keeping bees in insulated pavilions (taking into account the correct preparation of families), wintering usually passes successfully. But if the average temperature in the region in the winter months is relatively low, then the...

  27. The eyes of the bees and their ability to see If the reader ever had breakfast at a village in the air, there is honey, then probably the bees attracted by the honey smell were also on the table. In this case, you can always...

  28. How do bees talk to each other? The previous chapters talked about training, which allows you to get some data about the feelings of bees. The prerequisite for such experiments is that the bees we want to train come to our experimental...

  29. Nervous system, sense organs and behavior of bees Every living organism exists in changing environmental conditions and is able to adapt to these conditions. The existence of an organism without its interaction with the external environment is impossible. A living organism is capable...

  30. Schemes of pollen catchers Receiving pollen from plants or pergs from honeycombs is a very laborious process. You can get the pollen already collected by bees, by selecting their updates from the tap when returning to the hive. Practical...

  31. Bezotovy hive Honey bees during wintering use food that has been stored in the summer. They lost the ability to hibernate, which was with their ancestors. That is why these insects prepare a large amount of food...

  32. Feeding base of beekeeping and measures to expand and improve it For successful development and high productivity of beekeeping, as well as any branch of animal husbandry, a powerful and stable fodder base is necessary. The feeding base of beekeeping is honey plants of field crop...

  33. Reduction of labor costs for feeding bees Many beekeepers of large industrial farms, realizing the inevitability and high efficiency of fertilizing, are seeking ways to reduce labor on distribution of food to bees. In bee-breeding farms, it is necessary to feed the...

  34. Folding stepladder The advantages of this ladders are particularly evident in the small room of the garden house, where the capitally constructed steps leading to the attic or attic occupy a considerable area. Our stepladder, in its...

  35. Enemies and pests of bees Moth, or wax moth. This is the most intrusive pest of honeycombs, and sometimes the brood of bees. There are several types of moths. On our apiaries are seen two of its kind: larger and...

  36. Cleaning of nests and disinfection of hives When cleaning the hive, brown spots are especially carefully scraped – traces of diarrhea during wintering. These spots can serve as a source of spores of a dangerous disease of adult bees – nosematosis. Carefully...

  37. The device of hives and their classification Requirements for the hives. The beehive is the home of bees, an artificially created man, so it must most fully satisfy the biological characteristics of the bee family and at the same time be strong...

  38. Flying hoods in the hive Universal separation grid. In the kit two pieces in the size of 448X470 mm. They are designed for standard 10- and 12-ram hives. For installation in a 10-frame hive, it is sufficient to break off...

  39. Diseases of the brood The foulbrood. The term “foulbrood” refers to the infectious diseases of the brood of the bee family, accompanied by rotting in different stages of development. Diseases of all three bee colonies are affected, and the...

  40. Wheelless platforms Transporting the apiary to honey collection with minimal manual labor during loading and unloading of hives can be done using wheelless platform-selfloading trucks, transported by trucks or cars. The length and width of the mobile...

«
»